JP6861760B2 - Partition valve - Google Patents

Description

The present invention relates to a partition valve, and more particularly to a technique suitable for use in a pendulum valve provided with a no-mass closing mechanism.

In a vacuum device or the like, a partition valve is provided between a chamber, a pipe, a pump, etc., for partitioning a flow path between two spaces having different degrees of vacuum, and for connecting the two partitioned spaces. As such a partition valve, various types of valves are known.

As such a valve, a hydraulically driven telescopic actuator is used as an urging part that rotates the valve body that closes the valve so as to block the flow path when the valve is sealed, and further presses the valve body against the valve box opening. A pendulum type partition valve having a device is known.
The present inventors have filed an application relating to such a partition valve (Patent Document 1).

Here, the rotational operation of the valve body that opens and closes the valve is performed by driving a motor or the like.
Further, the electric motor supplied from the power source is responsible for generating the hydraulic pressure in the telescopic actuator.
The expansion / contraction drive in the expansion / contraction actuator of this example is performed by a hydraulic drive and a springback using a spring or the like in the opposite direction.

As a partition valve, in addition to high reliability in partitioning operation in a large cross section, it has been required to enable normal closing that closes the flow path when the power supply is lost.
This normal closing means that the flow path can be closed and the flow path can be closed when a power source such as a power supply that drives the valve body or the like is not working when the valve partitioning operation is performed. It means keeping it closed.

Japanese Patent No. 6358727

However, the normal closing of the pendulum type partition valve is an operation in an emergency such as a power failure. Therefore, an emergency such as this power outage occurs at an unexpected time.
Therefore, in the event of an emergency such as a power failure, there is a possibility that the operation of the valve body may be hindered in the flow path where the valve body operates.

For example, when the normal closing operation is performed at the same time as a power failure, the valve body, which is a pendulum that operates in a closing rotation, may vigorously collide with a foreign substance or the like located in the flow path. In this case, a considerably strong impact may be generated on the valve body or parts such as the valve box.

Alternatively, if the valve body is suddenly rotated during the normal closing operation at the same time as a power failure, it may adversely affect other configurations in the chamber in which the flow path is communicated.

Further, when the rotation operation of the valve body and the hydraulic operation to the seal position in the rotation axis direction of the valve body are performed by different urging portions, in the normal closing operation, the valve opening shielding position of the valve body is reached. After the closing rotation operation of the valve body is completed, it is necessary to perform the closing operation to the seal position of the valve body.
If the time order setting between the closing rotation operation and the closing operation is disturbed, the valve may not be closed or a failure such as a failure near the valve body may occur.

In addition, in order to realize normal closing in consideration of safety, in the hydraulic drive part, normal drive by the flood control generated by the motor and emergency operation by springback in the event of a power failure, which is an emergency in addition to the normal power supply. And, it is necessary to balance.
However, when springback is enabled in the event of a power failure, there are the following problems when an emergency operation is performed by the spring on the motor for generating flood control whose power supply has been lost.

First, the backflow of flood pressure due to the spring at the time of a power failure reverses the rotation shaft of the motor at the same time in the valve box urging portion. Then, in the motor that reverses in the state where the power supply is lost, a large amount of reverse energy is generated due to inertia.

Here, in a partition valve capable of partitioning in a large cross section, it is necessary to relatively increase the force for pressing and sealing the valve body. Therefore, the rated current of the motor is extremely large in order to drive the valve body. Therefore, the reversal due to the above inertia (kinetic energy represented by the product of the reverse angular velocity and the moment of inertia) becomes extremely large. As a result, as the kinetic energy is released as an impact load at the end of the springback, the cylinder at the hydraulic pressure generating portion may over-contract and generate more hydraulic pressure than expected.

Furthermore, there was a request to prevent the occurrence of problems in the closing operation in an emergency.

In order to solve these problems, the position of the valve body is maintained immediately after the power loss, which is an emergency, and after checking the situation in the flow path, etc., the valve can be normally closed even if the power is lost. There was a demand to improve the operational certainty of normal closing in the partition valve.

The present invention has been made in view of the above circumstances, and an object of the present invention is to achieve the following objects.
1. 1. To maintain the valve state in an emergency and then enable normal closing operation.
2. To improve the operational certainty of the valve.
3. 3. To save space, downsize, and reduce weight as a valve.
4. To reduce the effect of valve closing operation during emergency shutoff.
5. To prevent the occurrence of failures, etc. in the equipment related to the sluice valve.

The sluice valve of the present invention is a sluice valve capable of normally closed operation.
Hollow part and
A valve box having a first opening and a second opening that are provided so as to face each other and serve as a flow path that sandwiches the hollow portion and communicates with each other.
With a valve body that can open and close the flow path,
A rotating shaft that rotatably supports the valve body between the retracted position and the valve opening shielding position in the hollow portion and has an axis extending in the flow path direction.
A rotary shaft drive unit having a rotary drive motor capable of rotating the rotary shaft to rotationally drive the valve body,
A movable valve portion provided on the valve body so that the position in the flow path direction can be changed,
A valve box urging portion provided in the valve box to move and close the movable valve portion at the valve opening shielding position in the flow path direction, and
A hydraulic drive unit that supplies and drives operating hydraulic pressure to the valve box urging unit, and
The oil pressure generating part that generates the oil pressure in the hydraulic drive part and
A drive unit having a hydraulic motor and a hydraulic urging member for driving the hydraulic pressure generating unit,
The rotary shaft drive unit and the power supply that supplies power to the drive unit,
A non-excitation brake that regulates the operation of the rotary drive motor when the power is cut off,
A non-excitation brake that regulates the operation of the hydraulic motor when the power is cut off,
A brake operation release unit that releases the operation of the non-excitation operation brake,
The above problem was solved by providing the above.
In the partition valve of the present invention, the brake operation release portion is
A non-excitation brake that regulates the operation of the rotary drive motor,
A non-excited operation brake that regulates the operation of the hydraulic motor,
Can be independently deactivated.
In the partition valve of the present invention, the brake operation release portion is
The non-excitation operation brake that regulates the operation of the rotary drive motor is released, and the operation is released.
After that, it is preferable to release the operation of the non-excitation operation brake that regulates the operation of the hydraulic motor.
The partition valve of the present invention has the brake operation release portion.
It is possible to connect to a release control unit capable of outputting a release instruction signal based on the information in the flow path.
Further, in the present invention, it is also possible to employ a means for determining whether or not the release control unit outputs a release instruction signal based on the information in the flow path.
In the present invention, the brake operation release unit is
The non-excitation operation brake that regulates the operation of the hydraulic motor is released, and the operation is released.
After the hydraulic damper is operational
The operation of the non-excitation operation brake that regulates the operation of the rotary drive motor can be released.
In the present invention, the brake operation release unit is
It can be made manually operable.

The sluice valve of the present invention is a sluice valve capable of normally closed operation.
Hollow part and
A valve box having a first opening and a second opening that are provided so as to face each other and serve as a flow path that sandwiches the hollow portion and communicates with each other.
With a valve body that can open and close the flow path,
A rotating shaft that rotatably supports the valve body between the retracted position and the valve opening shielding position in the hollow portion and has an axis extending in the flow path direction.
A rotary shaft drive unit having a rotary drive motor capable of rotating the rotary shaft to rotationally drive the valve body,
A movable valve portion provided on the valve body so that the position in the flow path direction can be changed,
A valve box urging portion provided in the valve box to move and close the movable valve portion at the valve opening shielding position in the flow path direction, and
A hydraulic drive unit that supplies and drives operating hydraulic pressure to the valve box urging unit, and
The oil pressure generating part that generates the oil pressure in the hydraulic drive part and
A drive unit having a hydraulic motor and a hydraulic urging member for driving the hydraulic pressure generating unit,
The rotary shaft drive unit and the power supply that supplies power to the drive unit,
A non-excitation brake that regulates the operation of the rotary drive motor when the power is cut off,
A non-excitation brake that regulates the operation of the hydraulic motor when the power is cut off,
A brake operation release unit that releases the operation of the non-excitation operation brake,
To be equipped.
As a result, in the closing operation of the sluice valve, during normal power supply, the rotary drive motor of the rotary shaft drive unit rotates the rotary shaft to rotate and drive the valve body, and the hydraulic motor and oil pressure in the drive unit of the hydraulic pressure generator. The valve box urging portion is driven by the urging member to operate the valve.
Further, in an emergency such as loss of power supply from the power source, the non-excitation operation brake regulates the operation of the rotary drive motor and the hydraulic motor, so that the state of the valve body can be maintained as it is.
Furthermore, in an emergency, the non-excitation operation brake is released by the brake operation release unit to release the operation of the rotary drive motor and the hydraulic motor regulated by the non-excitation operation brake, and the valve is closed. It becomes possible.
As a result, after maintaining the position state of the valve body for a predetermined time from the loss of power supply, the valve closing operation can be performed after the predetermined condition is satisfied. Therefore, it is possible to check the condition in the flow path while maintaining the current state of the valve body, and then close the partition valve to enable a safe and reliable normal closing operation. Can be provided.

In the partition valve of the present invention, the brake operation release portion is
A non-excitation brake that regulates the operation of the rotary drive motor,
A non-excited operation brake that regulates the operation of the hydraulic motor,
Can be independently deactivated.
As a result, after the regulation of the operation of the rotary drive motor is released, the regulation of the non-excitation operation brake that regulates the operation of the hydraulic motor can be released. As a result, after maintaining the position state of the valve body for a predetermined time from the loss of power supply, the valve closing operation can be performed after the predetermined condition is satisfied.
At this time, after the valve body rotates, the valve body can be closed.

In the partition valve of the present invention, the brake operation release portion is
The non-excitation operation brake that regulates the operation of the rotary drive motor is released, and the operation is released.
After that, the operation of the non-excitation operation brake that regulates the operation of the hydraulic motor is released.
As a result, after the regulation of the operation of the rotary drive motor is released, the operation of releasing the regulation of the non-excitation operation brake that regulates the operation of the hydraulic motor can be performed in order. As a result, after maintaining the position state of the valve body for a predetermined time from the loss of power supply, the valve closing operation can be performed after the predetermined condition is satisfied.

The partition valve of the present invention has the brake operation release portion.
It is connected to a release control unit capable of outputting a release instruction signal based on the information in the flow path.
As a result, the release control unit outputs a release instruction signal after confirming the situation in the flow path, and based on this release instruction signal, the brake operation release unit releases the regulation of the operation of the rotary drive motor, and then the hydraulic pressure is applied. The operation of releasing the regulation of the non-excitation operation brake that regulates the operation of the motor can be performed in order. As a result, after maintaining the position state of the valve body for a predetermined time from the loss of power supply, the valve closing operation can be performed after the predetermined condition is satisfied.
Here, in order to obtain information in the flow path, a sensor or the like can be provided and connected to the brake operation release portion.

Further, in the present invention, the release control unit determines whether or not to output a release instruction signal based on the information in the flow path.
As a result, the release control unit outputs a release instruction signal after confirming the situation in the flow path, and based on this release instruction signal, the brake operation release unit releases the regulation of the operation of the rotary drive motor, and then the hydraulic pressure is applied. The operation of releasing the regulation of the non-excitation operation brake that regulates the operation of the motor can be performed in order.

In the present invention, the brake operation release unit is
The non-excitation operation brake that regulates the operation of the hydraulic motor is released, and the operation is released.
After the hydraulic damper is operational
The non-excitation operation brake that regulates the operation of the rotary drive motor is released.
As a result, at the end of the rotational operation of the valve body, the hydraulic damper (switching valve (spool valve)) that alleviates the impact can be operated, and the closing operation that alleviates the impact can be performed.

In the present invention, the brake operation release unit is
Manual operation is possible.
As a result, the operator or the like confirms the situation in the flow path, and then manually operates the brake operation release unit to release the restriction on the operation of the rotary drive motor and then restrict the operation of the hydraulic motor. The operation of releasing the regulation of the excitation operation brake can be performed in order.

According to the present invention, the valve state is maintained in an emergency, and then the valve body can be rotated and then closed, and the valve is normally closed to improve the certainty of valve operation and to be shut off in an emergency. It is possible to reduce the influence of the valve closing operation and prevent the occurrence of a failure or the like in the device related to the sluice valve.

It is a schematic cross-sectional view along the flow path direction which shows the 1st Embodiment of the partition valve which concerns on this invention, and is the figure which shows the case where the valve body is arranged in the retracted position (valve open position). It is a schematic explanatory drawing which shows the hydraulic drive part in 1st Embodiment of the partition valve which concerns on this invention. It is a schematic cross-sectional view along the flow path which shows the 1st Embodiment of the partition valve which concerns on this invention, and is the figure which shows the case where a valve body is arranged at a valve opening shielding position (sliding preparation position). It is a schematic cross-sectional view along the flow path which shows the 1st Embodiment of the partition valve which concerns on this invention, and is the figure which shows the case where the valve body is arranged at a valve closing position. It is a flowchart which shows the normal closing operation in 1st Embodiment of the partition valve which concerns on this invention. It is sectional drawing in the rotation axis direction for demonstrating the rotation axis drive part in 2nd Embodiment of the sluice valve which concerns on this invention. It is a schematic explanatory drawing which shows the hydraulic drive part in 2nd Embodiment of the partition valve which concerns on this invention. It is a schematic explanatory drawing which shows the hydraulic drive part in 2nd Embodiment of the partition valve which concerns on this invention. It is a schematic explanatory drawing which shows the valve box urging part in the 2nd Embodiment of the partition valve which concerns on this invention. It is a schematic explanatory drawing which shows the valve box urging part in the 2nd Embodiment of the partition valve which concerns on this invention. It is sectional drawing which is orthogonal to the flow path in 3rd Embodiment of the partition valve which concerns on this invention, and shows the retracting position of a valve body, and the valve opening shielding position. It is sectional drawing along the flow path in 3rd Embodiment of the partition valve which concerns on this invention, and shows the valve opening shielding position of a valve body. It is an enlarged cross-sectional view along the flow path which shows the edge part of the valve body in FIG. It is the top view which looked at the valve body in the 3rd Embodiment of the partition valve which concerns on this invention in the direction orthogonal to the flow path. FIG. 14 is an enlarged cross-sectional view taken along a flow path showing a valve box urging portion, a valve frame urging portion, and a valve plate urging portion in FIG. It is an enlarged cross-sectional view along the flow path which shows the edge part of the valve body in 3rd Embodiment of the partition valve which concerns on this invention, and shows the valve closed state by a movable valve frame. 16 is an enlarged cross-sectional view taken along a flow path showing a valve box urging portion, a valve frame urging portion, and a valve plate urging portion in FIG. It is an enlarged cross-sectional view along the flow path which shows the edge part of the valve body in 3rd Embodiment of the partition valve which concerns on this invention, and shows the valve closed state which cancels a back pressure by a movable valve plate part. FIG. 18 is an enlarged cross-sectional view taken along a flow path showing a valve box urging portion, a valve frame urging portion, and a valve plate urging portion in FIG. It is a schematic cross-sectional view along the flow path which shows 4th Embodiment of the partition valve which concerns on this invention, and is the figure which shows the case where the valve body is arranged at the valve opening shielding position (sliding preparation position). It is a top view which shows the main part of the 4th Embodiment of the partition valve which concerns on this invention, and is the figure which shows the positional relationship between a spool valve and a rotation axis of a valve body. It is a schematic explanatory drawing which shows the hydraulic drive part in 4th Embodiment of the partition valve which concerns on this invention. It is a flowchart which shows the normal closing operation in 4th Embodiment of the partition valve which concerns on this invention. It is a schematic diagram which shows the operation of a pool valve, and is the figure which shows the valve open state which the rod of a spool valve is in a 2nd position. It is a schematic diagram which shows the operation of the sluice valve and the spool valve in 5th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the valve open state which the rod of a spool valve is in a 2nd position. It is a schematic diagram which shows the operation of the sluice valve and the spool valve in 5th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the valve closed state in which the rod of a spool valve is in a 3rd position. It is a schematic diagram which shows the operation of the sluice valve and the spool valve in 5th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the collision standby state in which the rod of a spool valve is in a 1st position. It is a schematic diagram which shows the operation of the sluice valve and the spool valve in 5th Embodiment of the sluice valve which concerns on this invention, and shows the damping state which started moving so that the rod of a spool valve is closer to a 2nd position than a 1st position. It is a figure which shows. It is a schematic diagram which shows the operation of the sluice valve and the spool valve in 5th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the damping state which the rod of a spool valve moved further close to a 2nd position. It is a schematic diagram which shows the operation of the sluice valve and the spool valve in 5th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the moment when the rod of a spool valve reaches a 3rd position. It is a schematic diagram which shows the operation of the spool valve in 6th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the valve open state which the rod of a spool valve is in a 2nd position. It is a schematic diagram which shows the operation of the spool valve in 6th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the valve closed state in which the rod of a spool valve is in a 3rd position. It is a schematic diagram which shows the operation of the spool valve in 6th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the collision standby state in which the rod of a spool valve is in a 1st position. It is a schematic diagram which shows the operation of the spool valve in 6th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the damping state where the rod of a spool valve started moving in the direction closer to the 2nd position than the 1st position. is there. It is a schematic diagram which shows the operation of the spool valve in 6th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the damping state which the rod of a spool valve moved further close to a 2nd position. It is a schematic diagram which shows the operation of the spool valve in the 6th Embodiment of the sluice valve which concerns on this invention, and is the figure which shows the moment when the rod of a spool valve reaches a 3rd position. It is sectional drawing in the rotation axis direction for demonstrating the rotation axis drive part in 7th Embodiment of the partition valve which concerns on this invention.

Hereinafter, the first embodiment of the partition valve according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view of the partition valve according to the present embodiment along the flow path direction, and is a diagram showing a case where the valve body is arranged at the retracted position (valve open position).
FIG. 2 is a schematic explanatory view showing a hydraulic drive unit in the partition valve according to the present embodiment.
FIG. 3 is a schematic cross-sectional view along a flow path showing a partition valve in the present embodiment, and is a diagram showing a case where the valve body is arranged at a valve opening shielding position (sliding preparation position).
FIG. 4 is a schematic cross-sectional view along a flow path showing a partition valve in the present embodiment, and is a diagram showing a case where the valve body is arranged at a valve closing position.
In the figure, reference numeral 100 is a partition valve.

As shown in FIG. 1, the partition valve 100 according to the present embodiment is a pendulum type slide valve capable of normally closing operation by springback. As shown in FIGS. 1 to 4, the partition valve 100 according to the present embodiment includes a valve box 10, a hollow portion 11, a valve body 5, a rotary shaft 20, a rotary shaft drive unit 200, and a hydraulic drive unit. (Incompressible fluid drive unit) 700 and.

The valve box 10 has a hollow portion 11 and a first opening 12a and a second opening 12b that are provided so as to face each other and serve as a flow path H that communicates with the hollow portion 11.
The flow path H is set from the second opening 12b toward the first opening 12a.

The valve body 5 is arranged in the hollow portion 11 of the valve box 10 and can open and close the flow path H.
The rotating shaft 20 has an axis extending in the flow path H direction.
The rotating shaft 20 rotatably supports the valve body 5 between the retracted position (valve opening position) and the valve opening shielding position (sliding preparation position) in the hollow portion 11.

In the retracted position (valve open position), the valve body 5 is retracted from the first opening 12a and is in an open state (FIG. 1) capable of communicating with the flow path H. At the valve opening shielding position (sliding preparation position), the valve body 5 is in a closed state (FIG. 3) that shields the first opening 12a.

The partition valve 100 operates between the retracted position (valve open position) and the valve closed position (FIG. 4).
The rotary shaft drive unit 200 can rotationally drive the rotary shaft 20.
The rotary shaft drive unit 200 can reciprocate and rotate the valve body 5.

The rotary shaft drive unit 200 has a rotary drive motor 220.
The rotary drive motor 220 is connected to the power supply 227 and is supplied with electric power for rotationally driving the rotary shaft 20.
The rotary shaft drive unit 200 has a power failure urging device 230 that rotates the rotary shaft 20 so that the valve body 5 is in the valve closing position at the time of power failure.

The power failure urging device 230 may be of a spring lean type provided with a spring having an urging force.
The power failure urging device 230 is configured to release the spring that is wound during normal energization when the power is turned off.

The rotary shaft drive unit 200 includes a non-excitation operation brake 221 that regulates the operation of the rotary drive motor 220 when the power is cut off.
The non-excitation operation brake 221 stops the rotation of the rotation shaft of the rotation drive motor 220 in a state where there is no power supply from the power supply 227.

The rotary shaft drive unit 200 has a brake operation release unit 225f that releases the operation of the non-excitation operation brake 221.
The brake operation release unit 225f releases the operation when the non-excitation operation brake 221 regulates the operation of the rotary drive motor 220. That is, it is possible to rotate the rotary drive motor 220 without supplying power from the power supply 227.

In the rotary shaft drive unit 200, the non-excitation operation brake 221 stops the rotary operation of the rotary drive motor 220 when the power is cut off.
After that, when the operation of the non-excited operation brake 221 is released by the brake operation release unit 225f, the rotation shaft 20 is rotated by the power interruption urging device 230 to set the valve body 5 as the valve closing position.

The valve body 5 includes a neutral valve portion 30 connected to the rotary shaft 20, a valve frame portion 63 connected to the neutral valve portion 30, and a movable valve portion (movable valve plate portion) 54 connected to the valve frame portion 63. Consists of.
The neutral valve portion 30 is fixed to the rotating shaft 20.
The neutral valve portion 30 maintains the central position of the hollow portion 11 in the flow path H direction.

The valve frame portion 63 is located around the movable valve portion (movable valve plate portion) 54. The valve frame portion 63 is fixed to the neutral valve portion 30. The valve frame portion 63, together with the neutral valve portion 30, maintains the central position of the hollow portion 11 at the retracted position (valve opening position), the valve opening shielding position (sliding preparation position), and the valve closing position.

The movable valve portion (movable valve plate portion) 54 is slidable with respect to the valve frame portion 63 in the flow path H direction.
The movable valve portion (movable valve plate portion) 54 can change the position in the flow path H direction with respect to the valve frame portion 63 at the valve opening shielding position (sliding preparation position) and the valve closing position.

The movable valve portion (movable valve plate portion) 54 sets the central position of the hollow portion 11 between the retracted position (valve open position) and the retracted position (valve open position) and the valve opening shielding position (sliding preparation position). maintain.
The movable valve portion (movable valve plate portion) 54 is provided with a valve plate seal packing that is in close contact with the inner surface of the valve box 10 located around the first opening 12a.

The valve box urging portion (pressing cylinder) 70 is provided by being embedded in the valve box 10. A plurality of valve box urging portions (pressing cylinders) 70 are arranged along the circumferential direction of the movable valve portion (movable valve plate portion) 54.

As shown in FIGS. 1 and 2, the valve box urging portion (pressing cylinder) 70 has a telescopic rod (movable portion) 72, an urging member (pressing spring) 73, and a fixing portion 71.
The movable portion (expandable rod) 72 of the valve box urging portion (pressing cylinder) 70 can be expanded and contracted toward the inside of the chamber Ch in a vacuum atmosphere.

The valve box urging portion (pressing cylinder) 70 is arranged so that the movable portion (expandable rod) 72 can be urged in the direction in which the urging member (pressing spring) 73 is separated from the movable valve portion (movable valve plate portion) 54. Cylinder.
In the valve box urging portion (pressing cylinder) 70, as shown in FIG. 1, the movable portion (expandable rod) 72 degenerated by the urging force of the urging member (pressing spring) 73 is a movable valve portion (movable valve plate). The unit) is separated from the 54 and stored in the fixed unit 71.

The valve box urging unit (pressing cylinder) 70 is driven by the flood control (incompressible fluid) supplied from the hydraulic drive unit 700.

The hydraulic drive unit 700 includes a hydraulic pressure generating unit 701 and a hydraulic pipe 702. The oil pressure generating unit 701 generates the oil pressure that supplies the oil pressure to the fixing unit 71. The hydraulic pipe 702 is connected to the oil pressure generating portion 701 and the fixing portion 71 of the valve box urging portion (pressing cylinder) 70.

The hydraulic drive unit 700 is configured to be normally closed.
The hydraulic pressure generating unit 701 has a hydraulic pressure urging member 720 that generates a hydraulic pressure to be supplied to the valve box urging unit (pressing cylinder) 70 by an urging force.
When the movable portion (expandable rod) 72 is retracted, the hydraulic pressure generating portion 701 supplies the hydraulic pressure in the operating direction to the valve box urging portion (pressing cylinder) 70 by the urging force of the hydraulic urging member 720. The hydraulic pressure generating unit 701 is also capable of maintaining the hydraulic state and maintaining the movable portion (expandable rod) 72 in the expanded / contracted state at the end of this operation. Further, it is possible to appropriately control the contact state of the movable portion (expandable rod) 72 with the object such as the pressing force.

The hydraulic drive unit (incompressible fluid drive unit) 700 has a drive unit 705 as shown in FIG.
When the movable part (expandable rod) 72 is expanded and contracted, the drive unit 705 overcomes the urging force of the hydraulic urging member 720 and causes the oil flow from the valve box urging part (pressing cylinder) 70 to the hydraulic pressure generating part 701. As described above, it has a hydraulic motor 705 m for driving the hydraulic pressure generating unit 701.

The drive unit 705 includes a non-excitation operation brake 705b that regulates the operation of the hydraulic motor 705 m when the power is cut off.
The non-excited operation brake 705b stops the rotation of the rotating shaft of the hydraulic motor 705 m in a state where there is no power supply from the power supply 707.

The drive unit 705 has a brake operation release unit 705f that releases the operation of the non-excitation operation brake 705b.
The brake operation release unit 705f releases the operation when the non-excitation operation brake 705b regulates the operation of the hydraulic motor 705m. That is, it is possible to rotate the rotating shaft of the hydraulic motor 705 m without supplying power from the power source 707.

The drive unit 705 is connected to and controlled by the control unit (controller) 706.
The drive unit 705 is connected to the power supply 707 to supply electric power for driving the drive unit 705.

The valve box urging portion (pressing cylinder) 70 is supposed to overcome the urging force of the urging member (pressing spring) 73 by the hydraulic pressure supplied from the hydraulic drive portion 700 to drive the movable portion (expandable rod) 72. Cylinder.
The valve box urging portion (pressing cylinder) 70 can be springbacked by the hydraulic drive portion 700.
The springback is the opposite of the operating direction by the hydraulic motor 705 m by flowing hydraulic oil from the oil pressure generating part 701 to the valve box urging part (pressing cylinder) 70 by the urging force of the hydraulic urging member 720 of the hydraulic pressure generating part 701. It drives the movable portion (expandable rod) 72 in the direction.

In the present embodiment, during normal power supply, the valve box urging portion (pressing cylinder) 70 is driven by the flood control supplied by the hydraulic drive unit 700, and the movable portion (expandable rod) 72 is retracted to be movable. The pressure on the valve portion (movable valve plate portion) 54 is released.
Further, in the hydraulic drive system, the movable part (expandable rod) 72 is extended by the urging force of the hydraulic urging member 720 of the hydraulic pressure generating part 701 in the valve box urging part (pressing cylinder) 70 to extend the movable valve part (movable). The valve plate portion) 54 is pressed.
This is referred to as springback by the hydraulic urging member 720 of the hydraulic pressure generating unit 701.

In the hydraulic drive unit 700, the non-excitation operation brake 705b stops the rotational operation of the hydraulic motor 705m when the power is cut off.
After that, the brake operation release unit 705f releases the operation of the non-excitation operation brake 705b.
Then, the hydraulic oil flows from the hydraulic pressure generating portion 701 to the valve box urging portion (pressing cylinder) 70 by the hydraulic urging member 720. As a result, the movable portion (expandable rod) 72 is extended to press the movable valve portion (movable valve plate portion) 54.

In the valve box urging portion (pressing cylinder) 70, the chamber Ch on the vacuum side on which the telescopic rod (movable portion) 72 extends is a hollow portion 11 communicating with the flow path H.

The valve box urging unit (pressing cylinder) 70 built in the valve box 10 is connected to a hydraulic drive unit (incompressible fluid drive unit) 700 provided on the atmosphere side and is driven by flood control.
The hydraulic drive unit (incompressible fluid drive unit) 700 simultaneously supplies and discharges the incompressible fluid (pressure oil) to the plurality of valve box urging units (pressing cylinders) 70. That is, the hydraulic drive unit (incompressible fluid drive unit) 700 drives a plurality of valve box urging units (pressing cylinders) 70 at the same time.

The valve box urging portion (pressing cylinder) 70 has a movable valve portion (movable valve plate portion) 54 at a valve opening shielding position (sliding preparation position) and a valve closing position, and a first opening 12a in the flow path H direction. Encourage towards. The valve box urging portion (pressing cylinder) 70 has a function of allowing the valve plate seal packing to be brought into close contact with the inner surface of the valve box 10 located around the first opening 12a.
The valve box urging portion (pressing cylinder) 70 presses the periphery of the movable valve portion (movable valve plate portion) 54 at the valve opening shielding position (sliding preparation position) in the flow path H direction. The valve box urging portion (pressing cylinder) 70 closes (closes) the flow path H by the moved movable valve portion (movable valve plate portion) 54.

Further, although not shown in the valve frame portion 63 or the movable valve portion (movable valve plate portion) 54, the movable valve portion (movable valve plate portion) 54 is hollow with respect to the valve frame portion 63 in the flow path H direction. An urging portion (neutral urging portion) for urging toward the central position of the portion 11 is provided.

Further, in the partition valve 100 according to the present embodiment, when the valve box urging portion (pressing cylinder) 70 is not operating, the movable valve portion (movable valve plate portion) 54 is hollow inside the valve box 10. It has a mechanism for maintaining the central position of the portion 11. The valve frame portion is located between the valve opening shielding position (sliding preparation position) and the valve closing position by the valve box urging portion (pressing cylinder) 70 and the urging portion (neutral urging portion) of the valve frame portion 63. The thickness dimension of 63 and the movable valve portion (movable valve plate portion) 54 in the flow path H direction can be adjusted.

When the rotating shaft 20 rotates in the direction intersecting the direction of the flow path H, the neutral valve portion 30 fixed to the rotating shaft 20 also rotates integrally according to this rotation. Further, since the movable valve portion (movable valve plate portion) 54 is slidable only in the thickness direction on the neutral valve portion 30, the movable valve portion (movable valve plate portion) 54 is integrated with the neutral valve portion 30. Rotate.

By rotating the neutral valve portion 30 by the rotary shaft drive portion 200, the position corresponding to the first opening 12a is set from the retracted position (valve opening position) which is the hollow portion 11 in which the flow path H is not provided. The movable valve portion (movable valve plate portion) 54 moves by a pendulum movement to the valve opening shielding position (sliding preparation position) that shields the flow path H.

In the present embodiment, the fixing portion 71 of the valve box urging portion (pressing cylinder) 70 is built in the valve box 10. The valve box urging portion (pressing cylinder) 70 is arranged so that the movable portion (expandable rod) 72 can be urged in the direction in which the urging member (pressing spring) 73 is separated from the movable valve portion (movable valve plate portion) 54. Cylinder.
In the valve box urging portion (pressing cylinder) 70, as shown in FIGS. 1 and 3, the movable portion (expandable rod) 72 retracted by the urging member (pressing spring) 73 is the movable valve portion (movable valve plate). Part) Separated from 54, it is housed in a fixed part 71 built in the valve box 10.

Here, in the valve box urging unit (pressing cylinder) 70, flood control is supplied from the hydraulic drive unit (incompressible fluid drive unit) 700 by the hydraulic urging member 720 of the hydraulic pressure generating unit 701 from the retracted stored state. (Spring back), the movable part (expandable rod) 72 is extended.
At this time, in the valve box urging portion (pressing cylinder) 70, the movable valve portion (movable valve plate portion) 54 is moved toward the first opening 12a by the movable portion (expandable rod) 72, and the movable valve portion (Movable valve plate portion) 54 is brought into contact with the inner surface of the valve box 10. Further, the valve box urging portion (pressing cylinder) 70 presses the movable valve portion (movable valve plate portion) 54 against the inner surface of the valve box 10 to close the flow path H (valve closing operation).

From the extended state of the movable part (expandable rod) 72, the valve box urging part (pressing cylinder) 70 is supplied from the hydraulic drive part (incompressible fluid drive part) 700 by the drive of the hydraulic motor 705 m of the drive part 705. The tip of the movable part (expandable rod) 72 is retracted by releasing the hydraulic pressure. At this time, the urging portion (neutral urging portion) separates the movable valve portion (movable valve plate portion) 54 from the first opening 12a.
As a result, the movable valve portion (movable valve plate portion) 54 is pulled away from the inner surface of the valve box 10 and retracted. By setting the movable valve portion (movable valve plate portion) 54 at the center position of the hollow portion 11 in the flow path H direction, the flow path H is opened (release operation).

In this way, the valve closing operation and the releasing operation are possible by the mechanical contact operation and the mechanical separation operation in the valve box urging portion (pressing cylinder) 70. Here, the mechanical contact operation in the valve box urging portion (pressing cylinder) 70 is an operation in which the movable valve portion (movable valve plate portion) 54 is brought into contact with the inner surface of the valve box 10. The mechanical separation operation of the valve box urging portion (pressing cylinder) 70 is an operation of pulling the movable valve portion (movable valve plate portion) 54 from the inner surface of the valve box 10 by the urging portion (neutral urging portion). is there.

After this release operation, when the rotary shaft 20 is rotationally driven by the rotary shaft drive unit 200 (retracting operation), the neutral valve portion 30 and the movable valve portion (movable valve plate portion) 54 also rotate integrally according to this rotation. ..
The partition valve 100 is in a valve open state in which the movable valve portion (movable valve plate portion) 54 retracts from the valve opening shielding position (sliding preparation position) to the retracted position (valve opening position) by the release operation and the retracting operation. The valve opening operation is performed. The rotary shaft drive unit 200 is configured to be normally closed.

The valve box urging unit (pressing cylinder) 70 is driven by the flood control (incompressible fluid) supplied from the hydraulic drive unit (incompressible fluid drive unit) 700.

The hydraulic drive unit (incompressible fluid drive unit) 700 can further detect that the rotation of the rotating shaft 20 is in the valve closing position and the valve opening shielding position (sliding preparation position) to switch the hydraulic supply. The switching sensor 802 can also be provided.
The hydraulic drive unit (incompressible fluid drive unit) 700 is configured to be normally closed by springback by the hydraulic urging member 720 of the flood control generation unit 701.

The hydraulic drive unit (incompressible fluid drive unit) 700 uses the hydraulic motor 705 m of the drive unit 705 to push hydraulic oil from the valve box urging unit (pressing cylinder) 70 when the movable unit (expandable rod) 72 is degenerated. It moves to the oil pressure generating unit 701.
When the hydraulic drive unit (incompressible fluid drive unit) 700 extends the movable unit (expandable rod) 72, the oil pressure generated by the hydraulic urging member 720 of the hydraulic pressure generating unit 701 is applied to the valve box urging unit (pressing cylinder). Let it flow back to 70.
The hydraulic drive unit (incompressible fluid drive unit) 700 is capable of maintaining a hydraulic state in which the movable unit (expandable rod) 72 is expanded and contracted at the end of operation.
The hydraulic drive unit (incompressible fluid drive unit) 700 can appropriately control the contact state of the movable portion (expandable rod) 72 with the movable valve portion (movable valve plate portion) 54.

During normal energization in the present embodiment, in the partition valve 100, as shown in FIG. 1, the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position), and the flow path H is fully opened. Is ready for distribution.

Further, the movable valve portion (movable valve plate portion) 54 is moved from the retracted position (valve open position) shown in FIG. 1 to the valve opening shielding position (sliding preparation position) shown in FIG. 3 by the rotary shaft drive unit 200. During the closed rotation operation, the flow path H is partially covered by the movable valve portion (movable valve plate portion) 54, and the flow path H can be partially circulated.

Further, immediately after the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position) shown in FIG. 3, the flow path H is shielded by the movable valve portion (movable valve plate portion) 54. However, it is not hermetically sealed, and a part of the flow path H can be distributed near the peripheral edge of the movable valve portion (movable valve plate portion) 54.

Further, when the valve box urging portion (pressing cylinder) 70 springs back by the hydraulic urging member 720 of the hydraulic pressure generating portion 701, the movable portion (expandable rod) 72 is extended and driven. As a result, the movable valve portion (movable valve plate portion) 54 performs a sealing operation for changing the position in the flow path H direction. As a result, the movable valve portion (movable valve plate portion) 54 slides from the valve opening shielding position (sliding preparation position) shown in FIG. 3 to the valve closing position shown in FIG. 4, and the flow path H is closed. Will be done.

Next, when the hydraulic motor 705 m of the drive unit 705 of the hydraulic drive unit 700 is driven, the movable valve portion (movable) is driven by the degeneracy drive of the movable portion (expandable rod) 72 of the valve box urging portion (pressing cylinder) 70. The valve plate portion) 54 performs an opening operation for changing the position in the flow path H direction. As a result, the movable valve portion (movable valve plate portion) 54 slides from the valve closing position shown in FIG. 4 to the valve opening shielding position (sliding preparation position) shown in FIG. At this time, the flow path H is partially covered with the movable valve portion (movable valve plate portion) 54, and the flow path H can be partially circulated.

Further, immediately after the movable valve portion (movable valve plate portion) 54 starts the sealing release operation (separation operation) from the valve closing position shown in FIG. 4, the sealing of the flow path H is released and the flow path H is movable. A part of the valve portion (movable valve plate portion) 54 can be distributed near the peripheral edge portion. At the same time, the flow path H is shielded by the movable valve portion (movable valve plate portion) 54, but is not sealed.

Further, while the movable valve portion (movable valve plate portion) 54 opens and rotates from the valve opening shielding position (sliding preparation position) shown in FIG. 3 to the retracted position (valve opening position) shown in FIG. The road H is partially covered with a movable valve portion (movable valve plate portion) 54, and a part of the flow path H can flow.
During the rotational operation of the movable valve portion (movable valve plate portion) 54, the valve box urging portion (pressing cylinder) 70 maintains the degenerate state of the movable portion (expandable rod) 72, and the movable portion (expandable rod). The extension drive of 72 is not performed.

Next, the operation of the partition valve 100 at the time of power interruption will be described.

FIG. 5 is a flowchart showing a normal closing operation of the partition valve according to the present embodiment.
When the partition valve 100 in the present embodiment is at the valve opening shielding position (sliding preparation position) shown in FIG. 3 at the time of power interruption, the state of this valve opening shielding position (sliding preparation position) is maintained. ..

Here, when the valve body 5 in the partition valve 100 is between the valve opening shielding position (sliding preparation position) shown in FIG. 3 and the retracting position (valve opening position) shown in FIG. Make it a state.
As an operation at the time of power interruption in the partition valve 100 of the present embodiment, first, as step S00 shown in FIG. 5, consider a case where the valve is in a distribution state.

In the operation of the partition valve 100 of the present embodiment at the time of power failure, a power failure occurs as step S01 shown in FIG. In this step S01, the power supply from the power supply 227 to the rotary drive motor 220 is stopped. At the same time, in step S01, the power supply from the power supply 707 to the hydraulic motor 705 m is stopped.
Then, as step S02 shown in FIG. 5, the non-excitation operation brake 221 and the non-excitation operation brake 705b are activated.

As a result, the operation of the non-excitation operation brake 221 regulates the operation of the rotary drive motor 220 as step S03a shown in FIG.
At the same time, the operation of the non-excitation operation brake 705b regulates the operation of the hydraulic motor 705m as step S03b shown in FIG.
As a result, the state of the valve body 5 is maintained as it is. That is, the valve body 5 is maintained at any position between the valve opening shielding position (sliding preparation position) shown in FIG. 3 and the retracted position (valve opening position) shown in FIG.

These steps S03a and S03b are emergency operations and are performed at the same time as step S02.

Next, as step S04 shown in FIG. 5, the situation in the flow path H is confirmed. Here, the status confirmation in the flow path H is to confirm whether or not there is an obstacle to closing the flow path H (valve closing operation) in the partition valve 100 that has stopped urgently.

Specifically, although the rotational movement range in which the valve body 5 is moved from the retracted position (valve open position) to the valve opening shielding position (sliding preparation position) by a pendulum movement is an obstacle to the operation of the valve body 5. Check for presence.
Alternatively, when the movable valve portion (movable valve plate portion) 54 is pressed against the inner surface of the valve box 10 to close the flow path H (valve closing operation), the movable valve portion (movable valve plate portion) 54 and It is confirmed whether or not there is an obstacle to the operation of the movable valve portion (movable valve plate portion) 54 between the valve box 10 and the inner surface.

Further, when the flow path H is closed, it is confirmed whether or not there is a failure that occurs on both sides of the valve body 5, that is, upstream and downstream in the flow path H.

In the present embodiment, the worker can confirm the situation in the flow path H in step S04.

Next, as step S05 shown in FIG. 5, the brake operation release unit 225f is operated. Then, in step S06 shown in FIG. 5, the brake operation release unit 225f releases the operation of the non-excitation operation brake 221.
As a result, the rotary drive motor 220 can be rotated.

At the same time, the operation of the brake operation release unit 225f activates the power interruption urging device 230 as step S07 shown in FIG.
As a result, the power failure urging device 230 releases the spring that is wound during normal energization.

Due to the urging force of the spring, the electric power urging device 230 rotates the rotating shaft 20 so that the valve body 5 is in the valve closed position even when the electric power is cut off.
As a result, as step S08 shown in FIG. 5, the valve body 5 is moved to the valve opening shielding position (sliding preparation position) by a pendulum motion.

After the valve body 5 is positioned at the valve opening shielding position (sliding preparation position), the brake operation release portion 705f is operated as step S10 shown in FIG. Then, as step S11 shown in FIG. 5, the brake operation release unit 705f releases the operation of the non-excitation operation brake 705b.
As a result, the hydraulic motor 705 m can be rotated.

Then, as step S12 shown in FIG. 5, the hydraulic drive unit (incompressible fluid drive unit) 700 operates. Specifically, in step S13, the hydraulic oil flows from the oil pressure generating unit 701 to the valve box urging unit (pressing cylinder) 70 by the urging force of the hydraulic urging member 720 of the oil pressure generating unit 701. As a result, the movable portion (expandable rod) 72 is extended in the direction opposite to the operating direction of the hydraulic motor 705 m.

Then, as step S14 shown in FIG. 5, the movable valve portion (movable valve plate portion) 54 is pressed against the inner surface of the valve box 10 by the movable portion (expandable rod) 72, and the flow path H is closed (valve closing). motion).

As described above, the partition valve 100 of the present embodiment completes the springback operation in an emergency such as loss of power supply from the power supplies 707 and 227.

In the present embodiment, the operation release of the non-excitation operation brake 221 of the brake operation release unit 225f in step S06 and the operation release of the non-excitation operation brake 705b of the brake operation release unit 705f in step S11 are performed independently.

It is also possible for the worker to manually perform these steps S11 and S06.
That is, the operation of the non-excited operation brake 221 of the brake operation release unit 225f and the operation release of the non-excitation operation brake 705b of the brake operation release unit 705f can be manually operated.

Here, the status confirmation in the flow path H in step S04 can also be performed before the operation of the brake operation release unit 705f in step S10.

The partition valve 100 of the present embodiment can release the restriction on the operation of the hydraulic motor 705 m after releasing the restriction on the operation of the rotary drive motor 220. As a result, after the position state of the valve body 5 is maintained for a predetermined time from the loss of power supply in step S01, the valve closing operation can be performed after the predetermined condition is satisfied.
Moreover, by confirming the situation in the flow path H as step S04, it is possible to prevent the occurrence of further troubles in an emergency.

Hereinafter, a second embodiment of the partition valve according to the present invention will be described with reference to the drawings.

FIG. 6 is a cross-sectional view in the direction of the rotation axis for explaining the rotation axis drive unit of the oil partition valve according to the present embodiment.
The present embodiment differs from the first embodiment described above in that it relates to a rotary shaft drive unit, a hydraulic pressure generating unit, and a valve box urging unit, and the other corresponding components are designated by the same reference numerals. The description will be omitted.

The rotary shaft drive unit 200 in the present embodiment has a configuration having the same function as the rotary shaft drive unit 200 in the first embodiment described above.

The rotary shaft drive unit 200 for rotating the rotary shaft 20 is an electric actuator.
As shown in FIG. 6, the rotary shaft drive unit 200 includes a planetary gear clutch 210 connected to the rotary shaft 20, a rotary drive motor 220 which is a drive source connected to the planetary gear clutch 210, and a planetary gear clutch 210. It has a connected power interruption urging device 230, a rotation switching device 240, and a return device.

The rotary shaft drive unit 200 sets the neutral valve body (valve body) 5 as the valve closing position when the power is cut off (when the supply of driving power is cut off).
The rotary shaft drive unit 200 has a configuration capable of sequentially operating the rotary operation of the rotary shaft 20 and the closing operation of the valve box urging unit (pressing cylinder) 70.

The power failure urging device 230 is a spring lean type provided with a spring 231 having an urging force.
The power failure urging device 230 is configured to release the mainspring 231 wound during normal energization when the power is turned off.
At this time, the power failure urging device 230 rotates the rotating shaft 20 so that the neutral valve body 5 is in the valve closing position by the urging force of the mainspring 231.

The rotation switching device 240 has a configuration capable of switching the connection state with respect to the drive source that rotationally drives the rotating shaft 20 between when the power is turned on and when the power is cut off.
Specifically, the rotary drive motor 220 rotationally drives the rotary shaft 20 during normal energization (when drive power is supplied).
Further, at the time of an unusual power interruption (when the supply of the driving power is cut off), the rotation shaft 20 is rotationally driven by the power interruption urging device 230.

The recovery device has a function of returning the power failure urging device 230, whose urging force is released at the time of power failure, to a recovery state in which torque is stored at the time of recovery from power failure, which is a state in which energization is restored from the power failure state. ..

The power interruption urging device 230, the rotation switching device 240, and the return device may have a configuration common to each other.
Specifically, the rotary shaft drive unit 200 includes a planetary gear clutch (planetary gear type clutch) 210.

The planetary gear clutch 210 is configured to include a drive gear 211, a sun gear 212, a plurality of planetary gears 213, an internal tooth gear 214, a flange portion 215, and a casing 201 for accommodating these.

The drive gear 211 is rotated by driving the rotary drive motor 220.
The drive gear 211 is rotatably attached to the outer circumference of the rotating shaft 20.
The sun gear 212 is formed integrally with the drive gear 211. The sun gear 212 is rotatably attached to the outer circumference of the rotating shaft 20.

The planetary gear 213 is located outside the rotation shaft 20 in the radial direction with respect to the sun gear 212.
A plurality of planetary gears 213 are provided in the circumferential direction of the rotating shaft 20.
The plurality of planetary gears 213 are all arranged so as to mesh with the sun gear 212.

The internal tooth gear 214 is rotatably attached to the outer circumference of the rotating shaft 20.
The internal tooth gear 214 has internal peripheral teeth 214a facing inward in the radial direction of the rotating shaft 20.
The internal tooth gear 214 meshes with each planetary gear 213 by the internal peripheral tooth 214a.
The inner peripheral teeth 214a of the internal tooth gear 214 are located on the radial outer side of the rotation shaft 20 with respect to each planetary gear 213.

The flange portion 215 is connected so as to project toward the outer periphery of the rotating shaft 20.
The flange portion 215 rotates integrally with the rotating shaft 20.
One end of a support shaft 213c penetrating each planetary gear 213 is rotatably attached to the flange portion 215.

The rotating shaft 20 is an output shaft of the planetary gear clutch 210.
The sun gear 212 and the drive gear 211 are connected by a sleeve 211a through which the rotating shaft 20 is passed.

Outer peripheral teeth 214b are provided on the outer periphery of the inner tooth gear 214.
The internal tooth gear 214 is connected by the outer peripheral tooth 214b so as to mesh with the internal relay gear 233.

The inner relay gear 233 is rotatably attached to the outer circumference of the royal fern shaft 231c.
The royal fern shaft 231c is arranged at a position parallel to the rotation shaft 20.
The inner relay gear 233 is integrated with the outer relay gear 234 coaxial with the royal fern shaft 231c.

The external relay gear 234 is rotatably attached to the outer circumference of the royal fern shaft 231c.
A small relay gear 243 is meshed with the external relay gear 234.
The small relay gear 243 is rotatably attached to the outer circumference of the brake shaft 241c.
The brake shaft 241c is arranged at a position parallel to the rotation shaft 20 and the royal fern shaft 231c.

The small relay gear 243 is integrated with the large relay gear 244 coaxial with the brake shaft 241c.
The large relay gear 244 is meshed with the royal fern gear 235.
The small fern gear 235 is integrated with the large fern gear 236 coaxial with the fern shaft 231c.

The small fern gear 235 and the large fern gear 236 rotate integrally with the fern shaft 231c.
The brake gear 245 is meshed with the large fern gear 236.
The brake gear 245 rotates integrally with the brake shaft 241c.

A spring 231 is connected to the shaft 231c.
The mainspring shaft 231c can be driven by the mainspring spring 231 that has released the urging force.

The winding stop portion 231d is provided on the mainspring shaft 231c so that the winding is stopped in a constant state when the mainspring spring 231 is wound up.
The mainspring shaft 231c is provided with a sensor 250 for detecting that the mainspring spring 231 is sufficiently wound.
The sensor 250 is connected to the excitation actuated brake 241 so as to be able to output a detection signal.
An excitation-operated brake 241 as a rotation switching device 240 that releases the wound spring 231 when the power is cut off is connected to the brake shaft 241c.

The mainspring 231 is a torque storage unit.
The mainspring 231 rotates the rotating shaft 20 via the relay gear portion when the urging force is released. As a result, the rotary shaft drive unit 200 is configured so that the valve body 5 is in the valve closing position.

The excitation-operated brake 241 exerts a braking function on the mainspring 231 when energized. As a result, the rotation of the royal fern shaft 231c is stopped when the power is turned on.
The excitation-operated brake 241 releases the braking function for the mainspring 231 when the power is cut off, and releases the urging force of the mainspring 231. As a result, the royal fern shaft 231c is made rotatable at the time of power failure.

A non-excited operation brake 221 is connected to the rotary drive motor 220.
The non-excited operation brake 221 exerts a braking function when the power is cut off, and stops the rotation of the rotary drive motor 220.
The non-excited operation brake 221 releases the brake function when energized so that the rotary drive motor 220 can be rotationally driven. The non-excited operation brake 221 is connected to the brake operation release unit 225f.
In addition to the above configuration, the rotary drive motor 220 may be accompanied by a gear unit for adjusting torque and rotation speed and a motor unit for control.

Further, the rotating shaft 20 is provided with a stopper 21 that regulates the rotating position.
The stopper 21 rotatably regulates the rotating shaft 20 between the valve closing position and the valve opening position.

A switching valve 704 that detects that the neutral valve body 5 is in the valve closed position is connected to the stopper 21. When this switching valve 704 is turned on, as will be described later, in the fixed portion 71, the oil supply supplied from the connected hydraulic drive portion 700 is reduced, so that the movable portion of the valve box urging portion (pressing cylinder) 70 is turned on. The (expandable rod) 72 can be driven in the extending closing direction.

When the rotating shaft drive unit 200 is normally energized (a state in which driving power is being supplied), the excitation-operated brake 241 exerts a braking function and maintains this state.
Further, the mainspring 231 is maintained in a wound state.

At the same time, the brake function of the non-excited operation brake 221 is not functioning during normal energization. Therefore, the driving force of the rotary drive motor 220 is capable of rotating the rotary shaft 20 via the planetary gear clutch 210.

Specifically, in the rotary shaft drive unit 200, the excitation-operated brake 241 maintains a state in which the rotation of the brake shaft 241c is stopped.
In this state, the rotation of the brake gear 245 integrated with the brake shaft 241c is maintained in a stopped state.
Therefore, the large royal fern gear 236 that meshes with the brake gear 245, and the royal fern shaft 231c that is integrated with the large royal fern gear 236 and the small royal fern gear 235 all maintain the state in which the rotation is stopped.

At the same time, the large relay gear 244 that meshes with the small relay gear 235, the small relay gear 243 integrated with the large relay gear 244, the external relay gear 234 that meshes with the small relay gear 243, and the internal relay gear 233 integrated with the external relay gear 234 Also keeps the rotation stopped.
Similarly, the internal relay gear 233 and the internal tooth gear 214 that mesh with the outer peripheral teeth 214b maintain the state in which the rotation is stopped.

When the rotary drive motor 220 is driven in this state, the drive gear 211 is rotationally driven in the planetary gear clutch 210.
Then, the sun gear 212 integrated with the drive gear 211 rotates.
In addition, the planetary gear 213 that meshes with the sun gear 212 rotates.
At this time, the planetary gear 213 rotates around the axis of the support shaft 213c.

When the planetary gear 213 rotates, the rotation of the internal tooth gear 214 is stopped. At this time, since the planetary gear 213 meshes with the internal tooth gear 214 at the inner peripheral tooth 214a, the planetary gear 213 rotates and moves in the circumferential direction of the internal tooth gear 214.
The flange portion 215 rotates following the planetary gear 213 that moves in the circumferential direction of the internal tooth gear 214.
As a result, the rotating shaft 20 integrated with the flange portion 215 rotates.

Further, when the power is cut off (when the supply of driving power is cut off), the excitation actuated brake 241 maintains the state in which the rotation of the brake shaft 241c is stopped in the state where the brake operation release unit 225f is activated. ..
In this state, the rotation of the brake gear 245 integrated with the brake shaft 241c is maintained in a stopped state.
Therefore, the large royal fern gear 236 that meshes with the brake gear 245, and the royal fern shaft 231c that is integrated with the large royal fern gear 236 and the small royal fern gear 235 all maintain the state in which the rotation is stopped.

At the time of power interruption (when the supply of driving power is cut off), the brake function of the non-excited operation brake 221 functions in the rotary shaft drive unit 200 in a state where the operation of the brake operation release unit 225f is released. .. As a result, the rotary drive motor 220 is not driven.
As a result, the drive gear 211 is in a state in which the rotation is stopped. At the same time, the rotation of the sun gear 212 integrated with the drive gear 211 is stopped.

Further, when the power is cut off (when the supply of the driving power is cut off), the brake function of the excitation actuated brake 241 does not function in the state where the operation of the brake operation release unit 225f is released.
As a result, the brake shaft 241c is in a rotatable state.
Then, the brake gear 245 integrated with the brake shaft 241c becomes rotatable.

Therefore, the large fern gear 236 that meshes with the brake gear 245 is in a rotatable state. Further, the small royal fern gear 235 and the royal fern shaft 231c integrated with the large royal fern gear 236 are in a rotatable state.
Then, the urging force of the wound spring 231 is released, and the royal fern shaft 231c rotates.

Along with the rotation of the fern shaft 231c, the small fern gear 235 integrated with the fern shaft 231c rotates.
As the small Zenmai gear 235 rotates, the large relay gear 244 meshing with the small Zenmai gear 235 and the small relay gear 243 integrated with the large relay gear 244 both rotate.
Further, the outer relay gear 234 that meshes with the small relay gear 243 and the inner relay gear 233 that is integrated with the outer relay gear 234 both rotate.

As a result, the internal relay gear 233 and the internal tooth gear 214 that mesh with the outer peripheral teeth 214b rotate.
Due to the rotation of the internal tooth gear 214, the planetary gear 213 meshing with the internal tooth gear 214 and the internal peripheral tooth 214a rotates around the axis of the support shaft 213c.

At this time, the rotation of the sun gear 212 is stopped. Therefore, the planetary gear 213 that meshes with the sun gear 212 moves in the circumferential direction of the sun gear 212.
The flange portion 215 rotates following the planetary gear 213 that moves in the circumferential direction of the sun gear 212.
As a result, the rotating shaft 20 integrated with the flange portion 215 rotates.

In this way, at the time of power failure, the rotating shaft 20 rotates to the valve closing position by releasing the wound spring 231 while the brake operation releasing unit 225f is operating in the rotating shaft driving unit 200. To do.

Following the rotation of the rotating shaft 20, the stopper 21 integrated with the rotating shaft 20 rotates to the valve closing position.
When the rotary shaft 20 and the stopper 21 are in the valve closed position, the stopper 21 comes into contact with the switching valve 704 described later. Then, the switching valve 704, which will be described later, is turned on, and the movable portion 72 of the valve box urging portion (pressing cylinder) 70 is driven in the extending closing direction to enter the valve closed state.

When recovering from the power failure state, it is in a state where it can be energized.
Therefore, the non-excited operation brake 221 is in a state in which the brake function does not function.
Therefore, the driving force of the rotary drive motor 220 is capable of rotating the rotary shaft 20 via the planetary gear clutch 210.

At the time of recovery from the power failure to return from the power failure state to the normal energized state, in the rotary shaft drive unit 200, first, the brake operation release unit 225f is activated, and the excitation actuated brake 241 is in a state in which the brake function does not function. maintain.
As a result, the brake shaft 241c is maintained in a rotatable state.

Then, the brake gear 245 integrated with the brake shaft 241c maintains a rotatable state.
Therefore, the large fern gear 236 that meshes with the brake gear 245 is in a rotatable state.

Further, the small royal fern gear 235 and the royal fern shaft 231c integrated with the large royal fern gear 236 are in a rotatable state.
The small fern gear 235 integrated with the fern shaft 231c is in a rotatable state.
The large relay gear 244 that meshes with the small fern gear 235 and the small relay gear 243 that is integrated with the large relay gear 244 are both in a rotatable state.

Further, the outer relay gear 234 that meshes with the small relay gear 243 and the inner relay gear 233 that is integrated with the outer relay gear 234 are both in a rotatable state.
The internal relay gear 233 and the internal tooth gear 214 that mesh with the outer peripheral teeth 214b are in a rotatable state.

When the rotary drive motor 220 is driven in this state, the drive gear 211 is rotationally driven in the planetary gear clutch 210.
Then, the sun gear 212 integrated with the drive gear 211 rotates.
In addition, the planetary gear 213 that meshes with the sun gear 212 rotates.
At this time, the planetary gear 213 rotates around the axis of the support shaft 213c.

In this state, the flange portion 215 and the rotating shaft 20 do not rotate due to the weight of the valve body 5. Therefore, the rotation of the drive gear 211 causes the internal tooth gear 214 to rotate via the sun gear 212 and the planetary gear 213.

Then, the internal relay gear 233 that meshes with the internal tooth gear 214 and the outer peripheral tooth 214b rotates.
As the inner relay gear 233 rotates, the outer relay gear 234 integrated with the inner relay gear 233 rotates.

Further, the small relay gear 243 that meshes with the external relay gear 234, the large relay gear 244 integrated with the small relay gear 243, and the small Zenmai gear 235 that meshes with the large relay gear 244 all rotate.
Along with the rotation of the small fern gear 235, the fern shaft 231c integrated with the small fern gear 235 rotates.

By rotating the mainspring shaft 231c, the connected mainspring spring 231 is wound and tightened.
At the same time, with the rotation of the small fern gear 235, the large fern gear 236 integrated with the small fern gear 235 rotates. The brake shaft 241c rotates with the rotation of the large fern gear 236.

When the mainspring 231 is sufficiently wound and the neutral valve body 5 is in a state sufficient to be in the valve closed position at the time of power failure, this is detected by the sensor 250 and the excitation actuated brake 241 has a braking function. To work.
The braking function of the excitation-operated brake 241 stops the rotation of the brake shaft 241c.

As a result, the rotation of the brake gear 245 integrated with the brake shaft 241c, the large zenmai gear 236 meshing with the brake gear 245, and the zenmai shaft 231c integrated with the large zenmai gear 236 are all stopped.
As a result, the mainspring 231 is maintained in a sufficiently wound state and is in a standby state against the occurrence of power failure.

Further, the small royal fern gear 235 integrated with the large royal fern gear 236 is in a state in which the rotation is stopped.
As a result, the large relay gear 244 that meshes with the small relay gear 235, the small relay gear 243 that is integrated with the large relay gear 244, the external relay gear 234 that meshes with the small relay gear 243, and the internal relay gear 233 that is integrated with the external relay gear 234 become In both cases, the rotation is stopped.

Similarly, the internal relay gear 233 and the internal tooth gear 214 that mesh with the outer peripheral teeth 214b are in a state in which the rotation is stopped.
When the rotary drive motor 220 is driven in this state, the driving force of the rotary drive motor 220 is transmitted to the rotary shaft 20 to rotate the neutral valve body 5.

At the start of energization (when the power is restored), the return device is configured so that the spring 231 can be wound by driving the rotary drive motor 220 without operating the excitation actuating brake 241.

FIG. 7 is a schematic explanatory view showing a pressurized state hydraulic pressure generating part in the hydraulic drive part of the partition valve in the present embodiment.
FIG. 8 is a schematic explanatory view showing a hydraulic pressure generating unit in a depressurized state of the hydraulic drive unit of the partition valve according to the present embodiment.
The hydraulic drive unit (incompressible fluid drive unit) 700 in the present embodiment has the same configuration as the hydraulic drive unit (incompressible fluid drive unit) 700 in the first embodiment described above.

As shown in FIGS. 7 to 8, the hydraulic pressure generating unit 701 includes a hydraulic cylinder 710, a hydraulic urging member 720, a cylinder driving unit 730, and a casing 750.
The hydraulic cylinder 710 pressurizes and supplies pressure oil, which is an incompressible fluid, to the valve box urging portion (pressing cylinder) 70. The hydraulic urging member 720 urges the hydraulic cylinder 710 to enable a springback operation.

The cylinder drive unit 730 can drive the hydraulic cylinder 710 against the hydraulic urging member 720. The casing 750 houses the hydraulic cylinder 710, the hydraulic urging member 720, and the cylinder drive unit 730.

The hydraulic cylinder 710 has a bottomed cylinder-shaped cylinder body 711 and a piston 712 that is relatively movable in the axial direction inside the cylinder body 711. The piston 712 has a hydraulic flow path 713 that penetrates the inside along its axis, and the hydraulic flow path 713 is connected to the hydraulic pipe 702. The hydraulic flow path 713 is capable of inflowing or outflowing pressure oil (driving fluid), which is an incompressible fluid, into the hydraulic pipe 702.

In the piston 712, the hydraulic flow path 713 connected to the hydraulic pipe 702 penetrates the casing 750. The end 712a of the piston 712 is sealed with an O-ring and a sealant. The end portion 712a of the piston 712 is attached and fixed to the casing 750.
The end portion 712b, which is located at a position opposite to the end portion 712a of the piston 712, is located coaxially with the inside of the cylinder body 711.

The end 711a of the cylinder body 711 is open. The end portion 712b of the piston 712 is inserted into the end portion 711a of the cylinder body 711.
The cylinder body 711 can move relative to the piston 712 in the axial direction. The cylinder body 711 can move relative to the casing 750 in the axial direction.

The end 711b of the cylinder body 711 is closed. A hydraulic space 714 is formed by an inner surface close to the end portion 711b of the cylinder body 711 and an end surface of the end portion 712b of the piston 712. The hydraulic space 714 is filled with pressure oil (driving fluid) which is an incompressible fluid.

The volume of the hydraulic space 714 increases or decreases when the cylinder body 711 moves relative to the piston 712 in the axial direction. As the volume of the hydraulic space 714 increases or decreases, the pressure oil filled in the hydraulic space 714 flows in or out of the hydraulic pipe 702 via the hydraulic flow path 713. A flange portion 711c is provided at the outer peripheral position of the end portion 711a of the cylinder body 711. The flange portion 711c is provided so as to project radially outward from the end portion 711a.

The end portion 721a of the inner spring 721 and the end portion 722a of the outer spring 722, which serve as the hydraulic urging member 720, are in contact with the surface of the flange portion 711c toward the end portion 711b.
A peripheral groove 711d is provided on the surface of the flange portion 711c toward the end portion 711b in the vicinity of the outer peripheral surface of the cylinder body 711.

The end portion 721a of the inner spring 721 that serves as the hydraulic urging member 720 is in contact with the peripheral groove 711d. The end portion 722a of the outer spring 722 is in contact with the surface of the flange portion 711c, which is the outer peripheral position of the peripheral groove 711d, toward the end portion 711b.

The hydraulic urging member 720 has an inner spring 721 and an outer spring 722. The inner spring 721 and the outer spring 722 are coil springs. The inner spring 721 and the outer spring 722 are arranged coaxially with the cylinder body 711 and the piston 712. The inner spring 721 has an inner diameter dimension slightly larger than the diameter dimension of the outer peripheral surface of the cylinder body 711.

The outer spring 722 has an inner diameter dimension slightly larger than the outer diameter dimension of the inner spring 721. The outer spring 722 has a wire diameter larger than that of the inner spring 721. The outer spring 722 has a larger urging force than the inner spring 721.

The inner spring 721 and the outer spring 722 are capable of transmitting the urging force in the expansion / contraction direction to the cylinder body 711. Both the inner spring 721 and the outer spring 722 are urged to press the flange portion 711c of the cylinder body 711 toward the end portion 712a of the piston 712.

The end 721b of the inner spring 721 and the end 722b of the outer spring 722 are in contact with the casing 750. As a result, the hydraulic urging member 720 urges the cylinder body 711 with respect to the casing 750.
The hydraulic urging member 720 is not limited to this configuration as long as it can urge the cylinder body 711.

Bush 711e and Y-shaped packings 711f and 711g are provided on the inner peripheral surface of the cylinder body 711 at positions close to the end portion 711a. The inner peripheral surface of the cylinder body 711 and the outer peripheral surface of the piston 712 are slidably sealed. The end 731a of the drive shaft 731 of the cylinder drive 730 is coaxially connected to the end 711b of the cylinder body 711.

The cylinder drive unit 730 includes a drive shaft 731 that moves the cylinder body 711 relative to the piston 712 in the axial direction, and a drive transmission unit that drives the drive shaft 731 by a drive unit 705 of a motor or the like.

The drive shaft 731 is arranged in the casing 750 in a coaxial state with the cylinder body 711 and the piston 712. The drive shaft 731 is movable in the axial direction. The drive shaft 731 is movable relative to the piston 712 and the casing 750 in the axial direction.

A ball screw 731c is formed on the outer peripheral surface of the drive shaft 731 at a position close to the end portion 731a. The length of the ball screw 731c in the axial direction of the drive shaft 731 is set so that the inner screw surface 732c, which will be described later, can maintain the screwed state with respect to the entire range when the cylinder body 711 moves in the axial direction. Cylinder.

On the radial outer side of the drive shaft 731, the screw drive gear 732 is coaxially arranged at the outer peripheral position of the ball screw 731c. The drive shaft 731 is supported with respect to the casing 750 by the screw drive gear 732.

A detent 731h, which will be described later, is provided on the end portion 731b, which is located at a position opposite to the end portion 731a of the drive shaft 731, so as to project in the radial direction. The detent 731h is located inside the sliding groove 757 provided in the casing 750, and regulates the moving direction so that the drive shaft 731 can move in the axial direction without rotating.

The screw drive gear 732 has a tubular shape. The screw drive gear 732 is rotatably supported with respect to the casing 750. Ball bearings 732f and 732g are provided on the outer circumference of the screw drive gear 732. The ball bearings 732f and 732g support the screw drive gear 732 so that they can rotate coaxially with the drive shaft 731 with respect to the casing 750.

The screw drive gear 732 does not move in the axial direction with respect to the casing 750. An inner screw surface 732c is formed on the inner circumference of the screw drive gear 732. The inner screw surface 732c is screwed with the ball screw 731c of the drive shaft 731.

When the screw drive gear 732 rotates, a rotational force acts on the drive shaft 731 by the ball screw 731c screwed with the inner screw surface 732c. The rotation of the drive shaft 731 is regulated by the detent 731h and the sliding groove 757. Therefore, the drive shaft 731 moves in the direction regulated by the slide groove 757, that is, in the axial direction of the drive shaft 731.

An outer gear 732d is formed on the outer circumference of the screw drive gear 732. The outer gear 732d is formed at a position sandwiched between the ball bearing 732f and the ball bearing 732g in the axial direction of the screw drive gear 732. In the screw drive gear 732, the outer gear 732d is located on the outermost side in the radial direction.

In the screw drive gear 732, the internal screw drive gear 732a on which the inner screw surface 732c is formed and the external screw drive gear 732b on which the outer gear 732d is formed can be integrally connected.

The outer gear 732d meshes with the drive gear 733d. The drive gear 733d has a rotation axis parallel to the axis of the drive shaft 731. The drive gear 733d is rotatably supported by a rotating shaft 734 parallel to the axis of the drive shaft 731. The rotating shaft 734 is supported by the casing 750 as a position separated outward in the radial direction of the drive shaft 731. The drive gear 733d is integrally formed with the coaxial drive gear 733e. The drive gear 733e has a larger diameter than the drive gear 733d. The drive gear 733e rotates integrally with the drive gear 733d.

The drive gear 733e meshes with the drive gear 735. The drive gear 735 has a rotation axis parallel to the axis of the drive shaft 731. The drive gear 735 is rotatably supported by a rotating shaft 736 parallel to the axis of the drive shaft 731. The rotating shaft 736 is supported by the casing 750 at a position outside the drive shaft 731 in the radial direction and further separated from the rotating shaft 734.

The drive gear 735 meshes with the drive gear 737. The drive gear 737 has a rotation axis parallel to the axis of the drive shaft 731. The drive gear 737 is fixed to the rotary drive shaft 705a of the drive unit 705 such as a motor parallel to the axis of the drive shaft 731. The rotary drive shaft 705a is located outside the drive shaft 731 in the radial direction and is further separated from the rotary drive shaft 736. The rotary drive shaft 705a is rotatably attached to the casing 750 in a penetrating state.

Screw drive gear 732, ball bearing 732f, 732g, inner screw surface 732c, outer gear 732d, drive gear 733d, drive gear 733e, rotary shaft 734, drive gear 735, rotary shaft 736, drive gear 737 are drive transmission units (hydraulic). The drive system of the generation unit 701) is configured.

The casing 750 includes a casing cylinder 751, a casing lid 752, a rear casing 753, a ring 754, and a lid portion 758. The casing cylinder 751 has a tubular shape. The casing lid 752 closes one end of the casing cylinder 751.

The rear casing 753 closes the other end of the casing cylinder 751. The ring 754 is provided between the casing cylinder 751 and the rear casing 753. The lid portion 758 closes the other end of the rear casing 753.

The casing cylinder 751 has an internal shape extending coaxially with the cylinder body 711, the piston 712, and the drive shaft 731. The inside of the casing cylinder 751 forms a storage space 755.
Inside the storage space 755, a cylinder body 711, a piston 712, an inner spring 721 and an outer spring 722 serving as a hydraulic urging member 720, and an end portion 751a of the drive shaft 731 are stored. The storage space 755 is open at an end position close to the piston 712, and is closed by the casing lid 752.

A piston 712 is connected and fixed to the casing lid 752. The end portion 712a of the piston 712 penetrates the casing lid 752. The storage space 755 has an open end position close to the drive shaft 731 and is closed by the rear casing 753. A drive shaft 731 penetrates the rear casing 753. The storage space 755 is provided with a ring 754 at a position close to the rear casing 753.

The ring 754 is arranged around the drive shaft 731 coaxially with the drive shaft 731. The inner circumference of the ring 754 and the outer circumference of the drive shaft 731 are separated from each other. The ring 754 has an inner circumference equal to the inner circumference of the flange portion 711c, that is, the diameter dimension of the outer peripheral surface of the cylinder body 711. Further, the ring 754 has an outer diameter equal to the outer diameter dimension of the flange portion 711c.

The end portion 721b of the inner spring 721 and the end portion 722b of the outer spring 722, which serve as the hydraulic urging member 720, are in contact with the surface of the ring 754 facing the casing lid 752. A peripheral groove 754d is provided on the surface of the ring 754 facing the casing lid 752 so as to correspond to the peripheral groove 711d. The end portion 721b of the inner spring 721, which is the hydraulic urging member 720, is in contact with the peripheral groove 754d. The end portion 722b of the outer spring 722 is in contact with the surface of the ring 754 facing the casing lid 752, which is the outer peripheral position of the peripheral groove 754d.

Drive system support portions 751k and 753k extending radially outward of the drive shaft 731 from the storage space 755 are provided between the casing cylinder 751 and the rear casing 753. The drive system support portions 751k and 753k are formed in a flange shape forming a part in the circumferential direction with respect to the casing cylinder 751 and the rear casing 753.

The drive system support portion 751k and the drive system support portion 753k are in contact with each other. Between the drive system support portion 751k and the drive system support portion 753k, a screw drive gear 732, a ball bearing 732f, 732g, an inner screw surface 732c, an outer gear 732d, a drive gear 733d, a drive gear 733e, a rotary shaft 734, and a drive The gear 735, the rotating shaft 736, and the drive gear 737 are sandwiched.

On the opposite surfaces of the drive system support portion 751k and the drive system support portion 753k, a screw drive gear 732, a ball bearing 732f, 732 g, an outer gear 732d, a drive gear 733d, a drive gear 733e, a rotary shaft 734, a drive gear 735, Concavities and convexities corresponding to the rotating shaft 736 and the drive gear 737 are formed.

The drive system support portion 751k and the drive system support portion 753k include a screw drive gear 732, a ball bearing 732f, 732 g, a drive gear 733d, a drive gear 733e, a rotary shaft 734, a drive gear 735, a rotary shaft 736, and a drive gear 737. It is supported between the opposing surfaces.
Further, a rotary drive shaft 705a penetrates the drive system support portion 751k. A drive unit 705 having a hydraulic motor 705 m is attached to the drive system support unit 751k.

A ball bearing 732f is provided between the casing cylinder 751 and the screw drive gear 732. The ball bearing 732f rotatably supports the screw drive gear 732 with respect to the casing cylinder 751. A ball bearing 732 g is provided between the rear casing 753 and the screw drive gear 732. The ball bearing 732g rotatably supports the screw drive gear 732 with respect to the rear casing 753.

The rear casing 753 is formed with a rear space 756 that serves as a relief for the end portion 731b of the drive shaft 731 when the drive shaft 731 moves in the axial direction. A screw drive gear 732 is arranged at a position serving as a boundary between the rear space 756 and the storage space 755. That is, the drive shaft 731 is arranged so as to be movable in the axial direction at a position serving as a boundary between the rear space 756 and the storage space 755.

A sliding groove 757 is formed in the rear space 756 so as to increase the diameter. The sliding groove 757 is located on the outer side in the radial direction of the drive shaft 731. The slide groove 757 regulates the rotation of the drive shaft 731 and enables the drive shaft 731 to move in the axial direction by sliding the detent 731h inside. The end of the rear space 756 is closed by a lid 758.

A detection switch (detection means) 760 capable of detecting that the drive shaft 731 is close is provided at a position close to the lid portion 758 of the rear space 756. The detection switch (detection means) 760 is connected to the control unit 706. The detection switch (detection means) 760 may be located in the slide groove 757.

A detection switch (detection means) 761 capable of detecting that the drive shaft 731 is close to the piston 712 is provided at a position close to the screw drive gear 732 in the rear space 756. The detection switch (detection means) 761 is connected to the control unit 706. The detection switch (detection means) 761 may be located in the slide groove 757.

The detection switch (detection means) 760 and the detection switch (detection means) 761 detect the axial position of the drive shaft 731. The detection switch (detection means) 760 and the detection switch (detection means) 761 can be of a contact type or a non-contact magnetic type.
For example, the detection switch (detection means) 760 is a limiter switch that can detect when a part of the drive shaft 731 comes into contact with the detection switch, or a magnetic switch that can detect a magnetic element provided in a part of the drive shaft 731. You can also do it.

In the detection switch (detection means) 760, when the drive shaft 731 moves from the storage space 755 toward the rear space 756, the drive shaft 731 reaches the position specified by the detection switch (detection means) 760 in the axial direction. Detect that. Further, when the drive shaft 731 moves from the rear space 756 toward the storage space 755, the detection switch (detection means) 761 moves the drive shaft 731 to the position specified by the detection switch (detection means) 761 in the axial direction. Detect that it has arrived.

Here, when the detection switch (detection means) 760 outputs to the control unit 706 that the drive shaft 731 has reached a predetermined position in the axial direction, the control unit 706 that receives the signal drives the drive unit 705. Output a stop signal. As a result, the drive unit 705 stops driving. Therefore, the moving position of the drive shaft 731 is regulated by the position where the detection switch (detection means) 760 is installed.

Here, as for the drive stop in the drive unit 705, the drive of the hydraulic motor 705 m may be stopped by stopping the power supply from the power supply 707.
Further, to stop the drive in the drive unit 705, the rotation of the rotary drive shaft 705a of the hydraulic motor 705 m may be stopped by the non-excitation operation brake 705b.

Alternatively, when the detection switch (detection means) 761 outputs to the control unit 706 that the drive shaft 731 has reached a predetermined position in the axial direction, the control unit 706 that has received the signal starts driving the drive unit 705. Output the signal to be. As a result, the drive unit 705 starts driving. Therefore, the moving position of the drive shaft 731 is regulated by the position where the detection switch (detection means) 761 is installed.

Here, the drive unit 705 may start driving the hydraulic motor 705 m by starting power supply from the power supply 707.
Further, when the drive unit 705 starts driving, the rotation stop of the rotary drive shaft 705a of the hydraulic motor 705 m by the non-excitation operation brake 705b may be released.

In this way, the oil pressure generating unit 701 can switch the driving state in the driving unit 705 by the signal of the control unit 706.
When the control unit 706 outputs a drive signal, the drive unit 705 is driven. The rotation drive shaft 705a is rotated by the drive of the drive unit 705. The rotation of the rotary drive shaft 705a causes the drive gear 737 attached to the rotary drive shaft 705a to rotate. The rotation of the drive gear 737 is transmitted to the meshing drive gear 735. The rotation of the drive gear 735 is transmitted to the meshing drive gear 733e.

The rotation of the drive gear 733e is transmitted to the drive gear 733d formed as a unit. The rotation of the drive gear 733d is transmitted to the meshing outer gear 732d, and the screw drive gear 732 rotates. The rotation of the outer gear 732d is transmitted to the inner screw surface 732c of the integrally formed screw drive gear 732.

The rotation of the inner screw surface 732c of the screw drive gear 732 is transmitted to the ball screw 731c of the meshing drive shaft 731, and the drive shaft 731 rotates. Since the screw drive gear 732 is supported by ball bearings 732f and 732g, it does not move in the axial direction even if it rotates.

The drive shaft 731 is supported by the inner screw surface 732c, and the detent 731h is located inside the sliding groove 757 to regulate the moving direction of the drive shaft 731. Therefore, the drive shaft 731 moves in the axial direction when it is rotated. In this way, the rotational driving force of the drive unit 705 is transmitted to the drive shaft 731 by the drive transmission unit, and the drive shaft 731 moves in the axial direction.

When the drive shaft 731 moves in the axial direction, the cylinder body 711 connected integrally also moves in the axial direction in the same manner. At this time, the piston 712 does not move because it is fixed to the casing lid 752. As a result, the cylinder body 711 and the piston 712 move relatively in the axial direction.

Here, the relative movement of the cylinder body 711 and the piston 712 changes the volume of the hydraulic space 714 inside the cylinder body 711. The pressure oil (driving fluid), which is an incompressible fluid filled in the hydraulic space 714, flows into or out of the hydraulic flow path 713 according to the volume change of the hydraulic space 714.

An inner spring 721 and an outer spring 722, which are hydraulic urging members 720 that come into contact with the flange portion 711c, apply urging force to the cylinder body 711.

In the present embodiment, normal push, that is, in the drive unit 705, the movable portion (expandable rod) 72 can be extended when the non-excitation operation brake 705b is not operating and the hydraulic motor 705m is not driving. To do. Therefore, in the hydraulic cylinder 710, the urging force from the hydraulic urging member 720 is in the direction in which the inner spring 721 and the outer spring 722 extend. That is, the urging force applied from the hydraulic urging member 720 to the cylinder body 711 is in the direction in which the cylinder body 711 is separated from the screw drive gear 732.
Therefore, the urging force of the hydraulic urging member 720 is applied so as to reduce the volume of the hydraulic space 714 in the cylinder body 711.

Further, in the present embodiment, normal push, that is, the movable portion (expandable rod) 72 can be retracted when the non-excitation operation brake 705b is not activated in the drive portion 705 and the hydraulic motor 705 m is driven. And. Therefore, in the hydraulic cylinder 710, the direction in which the drive shaft 731 is moved by the drive of the drive unit 705 is opposite to the urging force of the hydraulic urging member 720. That is, by driving the drive unit 705, the drive shaft 731 moves in a direction away from the piston 712.
Therefore, by driving the drive unit 705, the drive shaft 731 moves so that the volume of the hydraulic space 714 in the cylinder body 711 increases.

When the non-excitation operation brake 705b is activated or the hydraulic motor 705m is stopped in the drive unit 705, the hydraulic pressure generation unit 701 is driven by the urging force of the hydraulic urging member 720 in the hydraulic space 714. Volume is reduced. As a result, the hydraulic space 714 product is pressurized. As a result, pressure oil (driving fluid), which is an incompressible fluid, flows from the hydraulic space 714 into the hydraulic pipe 702 via the hydraulic flow path 713. At this time, the flood control acts on the valve box urging portion (pressing cylinder) 70, and the tip portion 72a of the movable portion (expandable rod) 72 extends.

Further, when the drive unit 705 is driven by the oil pressure generating unit 701, the volume of the hydraulic space 714 increases due to the driving force of the drive unit 705, as shown in FIG. As a result, the hydraulic space 714 product is depressurized. Pressure oil (driving fluid), which is an incompressible fluid, flows from the hydraulic pipe 702 into the hydraulic space 714 via the hydraulic flow path 713. At this time, the flood control acts on the valve box urging portion (pressing cylinder) 70, and the tip portion 72a of the movable portion (expandable rod) 72 retracts.

Further, in the oil pressure generating unit 701, even if the cylinder body 711 overruns so as to be close to the casing lid 752 for some reason, the flange portion 711c comes into contact with the casing lid 752 and stops the movement of the cylinder body 711. .. This limits the reduction of the hydraulic space 714 to a predetermined range. Therefore, the oil pressure generating unit 701 can prevent the excess pressure oil (driving fluid) from flowing into the valve box urging unit (pressing cylinder) 70.

FIG. 9 is an axial sectional view for explaining a valve box urging portion in the partition valve according to the present embodiment. FIG. 10 is an axial sectional view orthogonal to FIG. 9 for explaining a valve box urging portion in the hydraulic drive system and the partition valve according to the present embodiment. FIG. 10 is an axial sectional view showing an extended state of the valve box urging portion.

As shown in FIGS. 9 to 10, the valve box urging portion (pressing cylinder) 70 according to the present embodiment includes a guide rod 771, a cylinder portion 772, a telescopic rod (movable portion) 72, and a flange portion 773. It has an urging member (pressing spring) 73 and a casing 774.

As shown in FIGS. 9 to 10, the valve box urging portion (pressing cylinder) 70 is capable of extending and retracting a telescopic rod 72 having a diameter smaller than that of the casing 774 from one end of a substantially cylindrical casing 774. It is said that it has a similar structure. The valve box urging portion (pressing cylinder) 70 is connected to the oil pressure generating portion 701 via the hydraulic pipe 702.

When the expansion / contraction rod 72 is expanded / contracted, the oil pressure generating unit 701 supplies a positive pressure or a negative pressure to the valve box urging unit (pressing cylinder) 70, and can maintain the hydraulic state at the end of the operation. Has been done. Further, the state of contact of the telescopic rod 72 with the object can be appropriately controlled.

As shown in FIGS. 9 to 10, the guide rod 771 has a substantially columnar shape, and has a through hole 771c in which the hydraulic drive unit 700 can supply the hydraulic pressure to the one end surface 771a in the axial direction. The guide rod 771 is erected from the lid portion 774b of the casing 774 toward the inside of the casing 774.

The guide rod 771 may be integrated with the lid portion 774b. In the present embodiment, the guide rod 771 has a pipe-shaped outer guide rod 771g screwed into a convex portion 774h protruding at the center position of the concave portion 774g provided in the lid portion 774b. As a result, the outer guide rod 771 g is centered with respect to the lid portion 774b. The through hole 771c is continuously formed inside the lid portion 774b, the convex portion 774h, and the outer guide rod 771g.

The cylinder portion 772 has a bottomed cylindrical shape with the other end open. The cylinder portion 772 is coaxial with the guide rod 771. The cylinder portion 772 is arranged so as to slidably cover one end surface 771a of the guide rod 771. One end surface 771a of the guide rod 771 and the inner surface of the cylinder portion 772 form a drive space 777 inside the one end surface 771a.

A through hole 771c communicates with the drive space 777. As shown in FIG. 9, a hydraulic pipe 702 is connected to the through hole 771c. The drive space 777 is connected to the oil pressure generating unit 701 via the hydraulic pipe 702.
Hydraulic oil is supplied from the oil pressure generating unit 701 to the drive space 777 via the hydraulic pipe 702, and the drive space 777 is pressurized. Alternatively, the hydraulic oil is returned to the oil pressure generating portion 701 via the hydraulic pipe 702 to the drive space 777, and the drive space 777 is depressurized.

A telescopic rod 72 is provided at one end 772a of the cylinder 772 at a position on the upper surface in the drawing. The telescopic rod 72 has a columnar shape extending outward in the axial direction of the cylinder portion 772. The telescopic rod 72 is coaxial with the cylindrical cylinder portion 772. The telescopic rod 72 is coaxial with the columnar guide rod 771.

The telescopic rod 72 is integrated with the cylinder portion 772, and is movable in the axial direction as the cylinder portion 772 slides with respect to the guide rod 771. The diameter of the telescopic rod 72 is set smaller than the diameter of the cylinder portion 772.

The diameter of the telescopic rod 72 is set smaller than the diameter of the guide rod 771. The telescopic rod 72 may be integrated with the cylinder portion 772. In the telescopic rod 72 of the present embodiment, the telescopic rod 72 is screwed into the convex portion 772h protruding from the shaft center position of the cylinder portion 772. As a result, the telescopic rod 72 is centered with respect to the lid portion 774b.

A flange portion 773 is provided around the other end portion 772b of the cylinder portion 772 at an outer peripheral position. The flange portion 773 extends radially outward to the other end portion 772b of the cylinder portion 772. The flange portion 773 has a predetermined thickness.

The flange portion 773 is formed integrally with the cylinder portion 772.
The other end of the urging member (pressing spring) 73 comes into contact with the pressing surface 773a close to the telescopic rod 72 to the flange portion 773.

The urging member (pressing spring) 73 has a spiral shape, and urges the flange portion 773 in the degenerate direction of the telescopic rod 72.
The urging member (pressing spring) 73 is located on the outer periphery of the cylinder portion 772 coaxially with the cylinder portion 772. One end of the urging member (pressing spring) 73 comes into contact with the casing 774.

The casing 774 includes a cylindrical cylindrical portion 774c, a lid portion 774b that closes the other end of the cylindrical portion 774c, and a vacuum side lid portion 774a that closes the through hole 774m provided at one end of the cylindrical portion 774c. Have.

At the center position of the lid portion 774b, a guide rod 771 is erected toward the inside of the casing 774. The vacuum side lid portion 774a has a through hole 775 through which the telescopic rod 72 penetrates in the center thereof, and faces the vacuum side. The other end of the cylindrical portion 774c is fitted into the recess 774g provided in the lid portion 774b.

A buffer space 776 is formed inside the cylindrical portion 774c, the lid portion 774b, and the vacuum side lid portion 774a.
The cylinder portion 772 and the urging member (pressing spring) 73 are housed in the buffer space 776. In the buffer space 776, the cylinder portion 772 is reciprocating. The buffer space 776 is a space that buffers the hydraulic pressure when it leaks from the drive space 777 before it leaks to the outside (chamber) Ch on the vacuum side.

A step 774d is formed on the inner surface of the cylindrical portion 774c that serves as the buffer space 776. The inner surface of the cylindrical portion 774c has a larger diameter at a position closer to the lid portion 774b than at a position closer to the vacuum side lid portion 774a.
The outer edge portion of the pressing surface 773a of the flange portion 773 comes into contact with the step 774d. The step 774d is a regulating portion that regulates the position of the cylinder portion 772 when it is extended in the moving range.

The outer peripheral surface of the flange portion 773 is not in contact with the inner surface of the cylindrical portion 774c that serves as the buffer space 776. The flange portion 773, which is the other end portion 772b of the cylinder portion 772, comes into contact with the recess 774g provided in the lid portion 774b. The recess 774g is a regulating portion that regulates the position of the cylinder portion 772 in the degenerate direction in the moving range.

The cylindrical portion 774c and the vacuum side lid portion 774a are connected and fixed. A step 774e is formed at a position of the cylindrical portion 774c close to the vacuum side lid portion 774a. The position closer to the vacuum side lid portion 774a than the step 774e of the cylindrical portion 774c is further reduced in diameter to form an atmospheric side buffer space 778 having an inner diameter dimension equal to the outer diameter dimension of the cylinder portion 772.
One end of the urging member (pressing spring) 73 is in contact with the step 774e.

An outer peripheral surface (sliding surface) 772 m of the cylinder portion 772 is slidably in contact with the inner peripheral surface of the atmospheric buffer space 778. As shown in FIG. 9, a through hole 778s communicating with the outside is formed in the atmospheric side buffer space 778 in the radial direction of the cylindrical portion 774c. The atmospheric side buffer space 778 communicates with the atmospheric side through through holes 778s.

The through hole 775 has a diameter smaller than that of the atmospheric buffer space 778. The through hole 775 has a diameter dimension substantially equal to the outer diameter of the telescopic rod 72.
The casing 774 and the guide rod 771 form a fixing portion 71.

The valve box urging portion (pressing cylinder) 70 is provided with a sealing member as a multi-stage sealing means so that oil, which is a working fluid, does not leak to the chamber Ch on the vacuum side during hydraulic drive. Specifically, four-stage sealing members 77a1 to 77e are provided from the drive space 777 inside the cylinder portion 772 to which the flood control is supplied to the outside inside the chamber Ch on the vacuum side where the telescopic rod 72 extends. ..

Two-stage sealing members 77a1 to 77e are provided on the sliding surface 771f on the outer periphery of the guide rod 771 that slides on the inner surface of the cylinder portion 772.
An O-ring (sealing member) 77a1 and a wear ring (sealing member) 77a2 are provided around the same groove on the sliding surface 771f on the outer periphery of the guide rod 771 so as to be hermetically sealed from the drive space 777 toward the outside.

The wear ring (sealing member) 77a2 is provided around the outside of the O-ring (sealing member) 77a1 in the radial direction.
The wear ring (sealing member) 77a2 is in contact with the inner surface of the cylinder portion 772 and slides with the sliding surface 772f on the inner circumference of the cylinder portion 772.

Further, on the sliding surface 771f on the outer periphery of the guide rod 771, the wear ring (sealing member) 77b is flush with the sliding surface 771f at a position separated from the drive space 777 by the wear ring (sealing member) 77a2. Is installed around.

The O-ring (sealing member) 77a1, the wear ring (sealing member) 77a2, and the wear ring (sealing member) 77b form the first-stage sealing member. The wear ring (sealing member) 77b is a backup ring.

Further, on the sliding surface 771f on the outer periphery of the guide rod 771, the Y packing (sealing member) 77c1 is flush with the sliding surface 771f at a position separated from the drive space 777 by the wear ring (sealing member) 77b. , Sealing (sealing member) 77c2 is provided around the same groove.

Both the Y packing (sealing member) 77c1 and the sealing (sealing member) 77c2 are in contact with the inner surface of the cylinder portion 772. The Y packing (sealing member) 77c1 and the sealing (sealing member) 77c2 slide on the sliding surface 772f on the inner circumference of the cylinder portion 772.
The sealing member 77c2 is arranged at a position separated from the drive space 777 with respect to the Y packing (sealing member) 77c1.

Further, on the sliding surface 771f on the outer periphery of the guide rod 771, a wear ring (sealing member) 77d is provided so as to be flush with the sliding surface 771f at a position separated from the drive space 777 by the sealing (sealing member) 77c2. Is installed around.
The Y packing (sealing member) 77c1, the sealing (sealing member) 77c2, and the wear ring (sealing member) 77d form a second-stage sealing member. The wear ring (sealing member) 77d is a backup ring.

A Y packing (sealing member) 77e is provided around the inner peripheral surface of the through hole 774m provided at a position close to the vacuum side lid portion 774a in the cylindrical portion 774c of the casing 774.
The Y packing (sealing member) 77e slides on the outer peripheral sliding surface 772m located close to one end surface 771a of the cylinder portion 772. The Y packing (sealing member) 77e is a third-stage sealing member.

An O-ring (sealing member) 77f is provided around the inner peripheral surface of the through hole 775 in the vacuum side lid portion 774a of the casing 774.
The O-ring (sealing member) 77f slides on the outer peripheral surface (sliding surface) 72m of the telescopic rod 72. The Y packing (sealing member) 77e is a fourth-stage sealing member.

Further, in addition to the sealing members 77a1 to 77e, an O-ring (sealing member) 77p is arranged at a screwing position between the convex portion 774h of the casing 774 and the outer guide rod 771g.
An O-ring (sealing member) 77q is arranged between the cylindrical portion 774c of the casing 774 and the recess 774g provided in the lid portion 774b.
An O-ring (sealing member) 77r is arranged around the through hole 775 in the vacuum side lid portion 774a for sealing with the chamber Ch on the vacuum side.

In the valve box urging portion (pressing cylinder) 70 in the present embodiment, the sealing members 77a1 to 77r can be made of the following materials.
The wear ring (sealing member) 77a2 is made of a fluororesin. The wear ring (sealing member) 77b is made of HNBR (hydrogenated nitrile rubber). The Y packing (sealing member) 77c1 is made of HNBR (hydrogenated nitrile rubber). The sealing member 77c2 is made of a fluororesin. The wear ring (sealing member) 77d is made of a fluororesin. The Y packing (sealing member) 77e is made of HNBR (hydrogenated nitrile rubber). The O-ring (sealing member) 77f is made of HNBR (hydrogenated nitrile rubber). The O-ring (sealing member) 77p, the O-ring (sealing member) 77q, and the O-ring (sealing member) 77r are all made of HNBR (hydrogenated nitrile rubber).

The telescopic rod 72 is made of stainless steel. The guide rod 771 is made of stainless steel. The cylinder portion 772 is made of stainless steel. The cylindrical portion 774c, the lid portion 774b, and the vacuum side lid portion 774a of the casing 774 are all made of aluminum. The material in these configurations can be appropriately changed according to the use of the valve box urging portion (pressing cylinder) 70.

Further, a sliding surface 771f on the outer circumference of the guide rod 771 made of stainless steel, a sliding surface 772f on the inner circumference of the cylinder portion 772, a sliding surface 772m on the outer circumference located close to one end surface 771a of the cylinder portion 772, and a telescopic rod. The sliding surfaces on the outer circumference of the 72 are all subjected to surface treatment such as chrome plating.

In the valve box urging portion (pressing cylinder) 70 in the present embodiment, the telescopic rod 72 is degenerated in the normal pull, that is, in the non-operating state. In this state, the flange portion 773 is urged by the urging member (pressing spring) 73 in the degenerate direction of the telescopic rod 72.

Next, in the hydraulic drive unit 700, the hydraulic oil supplied from the oil pressure generating unit 701 by driving the drive unit 705 flows into the drive space 777 via the hydraulic pipe 702. Then, the drive space 777 is pressurized, and the cylinder portion 772 moves toward the through hole 775 by overcoming the urging force of the urging member (pressing spring) 73. At this time, the cylinder portion 772 moves inside the buffer space 776.

The outer edge portion of the pressing surface 773a of the flange portion 773 comes into contact with the step 774d, and the movement of the cylinder portion 772 ends. As a result, as shown in FIG. 10, the telescopic rod 72 expands, and the telescopic rod 72 advances toward the chamber Ch on the vacuum side. The extended telescopic rod 72 presses the object. In this state, the state in which the telescopic rod 72 is extended can be maintained by maintaining the oil pressure supplied from the oil pressure generating unit 701 to the drive space 777.

In order to change the telescopic rod 72 from the extended state to the degenerate state, the hydraulic pressure supplied from the hydraulic pressure generating unit 701 to the drive space 777 is reduced. Alternatively, the hydraulic oil is returned from the drive space 777 to the hydraulic pressure generating unit 701 via the hydraulic pipe 702. Then, the cylinder portion 772 moves toward the lid portion 774b by the urging force acting on the flange portion 773 from the urging member (pressing spring) 73. As a result, as shown in FIG. 9, the telescopic rod 72 is in a degenerate state.

Further, in the valve box urging portion (pressing cylinder) 70 of the present embodiment, when oil leaks from the drive space 777 to the hydraulic space 714 via the hydraulic pipe 702, this can be detected. .. Specifically, when the amount of oil contained in the drive space 777 decreases, the volume of the hydraulic space 714 decreases due to the urging force of the hydraulic urging member 720. As a result, the reciprocating operating range of the drive shaft 731 in the axial direction moves in the direction closer to the piston 712 from the assumed position.
Therefore, the detection signal is output from the detection switch (detection means) 761 at an earlier stage in the axial movement of the drive shaft 731 as compared with the assumed position. Therefore, it is possible to detect that the amount of oil contained in the drive space 777 has decreased.

In this embodiment, the same effect as that of the above-described embodiment can be obtained.

Hereinafter, a third embodiment of the partition valve according to the present invention will be described with reference to the drawings.
In the present embodiment, the difference from the first and second embodiments described above is that the pendulum valve body of the sluice valve is used, and the other corresponding components are designated by the same reference numerals and the description thereof will be omitted. ..

FIG. 11 is a cross-sectional view orthogonal to the flow path showing the partition valve in the present embodiment.
FIG. 12 is a cross-sectional view taken along the flow path showing the partition valve in the present embodiment.
FIG. 13 is an enlarged cross-sectional view along a flow path showing the peripheral edge of the partition valve in the present embodiment.
In the figure, reference numeral 100 is a partition valve.

As shown in FIGS. 11 and 12, the partition valve 100 according to the present embodiment includes a valve box 10, a hollow portion 11, a valve body 5, a rotary shaft 20, a rotary shaft drive unit 200, and a valve box. It includes a urging portion (pressing cylinder) 70, a valve plate urging portion (holding spring) 80, a valve frame urging portion 90, and a hydraulic drive portion 700.

The first opening 12a and the second opening 12b have substantially the same contour. The first opening 12a has a circular contour. The second opening 12b has a circular contour.

The valve body 5 is arranged in the hollow portion 11.
The valve body 5 is capable of blocking the first space and the second space at the valve closing position.
The rotating shaft 20 has an axis extending substantially parallel to the flow path H direction. The rotating shaft 20 penetrates the valve box 10. The rotary shaft 20 can be rotationally driven by the rotary shaft drive unit 200.
A valve body 5 is fixed to the rotating shaft 20 via a connecting member (not shown). Alternatively, the valve body 5 may be directly connected to the rotating shaft 20 without a connecting member (not shown).
The rotating shaft 20 functions as a position switching portion of the valve body 5.

FIG. 14 is a top view of the partition valve according to the present embodiment as viewed in a direction orthogonal to the flow path showing the valve body.
The valve body 5 can close the first opening 12a and / or the second opening 12b.
The valve body 5 operates between a valve closing position, a valve opening shielding position, and a valve opening position (retracted position).
The valve body 5 is rotatable between the retracted position and the valve opening shielding position.

At the valve closing position, the valve body 5 is closed with respect to the first opening 12a and / or the second opening 12b (FIGS. 16 to 19).
At the valve opening position (retracted position), the valve body 5 is in an open state (shown by a broken line in FIG. 11) retracted from the first opening 12a and / or the second opening 12b.

The valve body 5 is composed of a neutral valve portion 30 and a movable valve portion 40.
The neutral valve portion 30 extends in a direction orthogonal to the axis of the rotating shaft 20. The neutral valve portion 30 is arranged so as to be included in a plane parallel to the direction orthogonal to the axis of the rotation axis 20.

As shown in FIGS. 11 to 13, the neutral valve portion 30 has a circular portion 30a and a rotating portion 30b.
The circular portion 30a has a ring shape slightly larger than the contour of the first opening 12a and / or the second opening 12b. The movable valve portion 40 is arranged at a position inside the circular portion 30a in the radial direction. The inner circumference of the circular portion 30a is arranged so as to substantially overlap the first opening 12a and / or the second opening 12b in the direction of the flow path H.

The rotating portion 30b is located between the rotating shaft 20 and the circular portion 30a. The rotating portion 30b rotates the circular portion 30a with the rotation of the rotating shaft 20. The rotating portion 30b is formed in a flat plate shape extending so as to increase the diameter from the rotating shaft 20 toward the circular portion 30a. The rotating portion 30b may have an arm shape in which a plurality of arms extend from the rotating shaft 20 toward the circular portion 30a.
The rotating shaft 20 and the neutral valve portion 30 rotate with respect to the valve box 10, but their positions do not change in the flow path H direction.

The circular portion 30a and the rotating portion 30b may be integrated.
In this case, a through hole into which the movable valve portion 40 is fitted is formed in the flat plate-shaped neutral valve portion 30 to form a circular portion 30a. A part of the circular portion 30a in the circumferential direction and a portion extending outward in the radial direction are referred to as a rotating portion 30b.

The thickness dimension of the circular portion 30a in the flow path H direction is formed so as to be substantially equal to the thickness dimension of the rotating portion 30b in the flow path H direction. A circular flange portion 30c is provided around the inside of the neutral valve portion 30 in the circular portion 30a in the radial direction.

The thickness dimension of the circular flange portion 30c in the flow path H direction is formed so as to be smaller than the thickness dimension of the circular portion 30a in the flow path H direction. The circular flange portion 30c is provided around the inner peripheral surface of the circular portion 30a at a position close to the first opening 12a in the flow path H direction.

The outer frame plate 60e of the movable valve frame portion 60, which will be described later, is located at a position closer to the second opening 12b than the circular flange portion 30c in the flow path H direction. The circular flange portion 30c is connected to the outer frame plate 60e of the movable valve frame portion 60, which will be described later. The circular flange portion 30c and the outer frame plate 60e are located on the outer side in the radial direction of the outer peripheral crank portion 60c.

The radial width dimension of the neutral valve portion 30 in the circular flange portion 30c is set to be substantially equal to the radial width dimension of the movable valve frame portion 60 in the outer peripheral crank portion 60c. The circular portion 30a and the circular flange portion 30c are provided around the outer peripheral crank portion 60c at positions that are radially outside the movable valve frame portion 60.
The circular portion 30a and the rotating portion 30b can also be formed so that the thickness dimensions in the flow path H direction are the same.

The movable valve portion 40 has a substantially disk shape.
The movable valve portion 40 is connected to the neutral valve portion 30 so that the position in the flow path H direction can be changed. That is, the movable valve portion 40 is connected to the neutral valve portion 30 so as to be slidable only in the thickness direction.
The movable valve portion 40 is composed of two portions that can move to each other in the flow path H direction. The movable valve portion 40 includes a movable valve frame portion 60 (slide valve frame) and a movable valve plate portion 50 (counter plate).

The movable valve frame portion 60 has a substantially annular shape substantially concentric with the circular portion 30a. The movable valve frame portion 60 is located inside the circular portion 30a in the radial direction. The movable valve frame portion 60 is fitted to the circular portion 30a.

The movable valve frame portion 60 is slidable with respect to the neutral valve portion 30 in the flow path H direction. The movable valve frame portion 60 is movable in the position of the neutral valve portion 30 in the flow path H direction. The movable valve frame portion 60 is movable with respect to the neutral valve portion 30 between a position where the pendulum can be operated and a position where the first opening 12a can be contacted.

The movable valve frame portion 60 includes an outer peripheral crank portion 60c, an inner frame plate 60d, and an outer frame plate 60e.
In the movable valve frame portion 60, the inner frame plate 60d, the outer peripheral crank portion 60c, and the outer frame plate 60e are connected, and the ring-shaped cross-sectional shape in the radial direction is substantially Z-shaped.

The outer peripheral crank portion 60c is formed in a ring shape or a cylindrical shape having a contour slightly larger than the contour of the first opening 12a and / or the second opening 12b. The outer peripheral crank portion 60c is formed on the entire circumference of the outer edge of the movable valve frame portion 60. The outer peripheral crank portion 60c has a thickness dimension in the flow path H direction that is substantially equal to the thickness dimension of the neutral valve portion 30 in the flow path H direction.

The outer peripheral crank portion 60c has a sliding surface 60b.
The sliding surface 60b is a cylindrical surface having an axis parallel to the flow path H direction. The sliding surface 60b is provided on the inner peripheral surface of the outer peripheral crank portion 60c over the entire length in the circumferential direction. The sliding surface 60b is positioned so as to be slidable with the sliding surface 50b of the inner peripheral crank portion 50c of the movable valve plate portion 50, which will be described later, in a state of facing each other.
An inner peripheral crank portion 50c is fitted to the outer peripheral crank portion 60c.

The inner frame plate 60d is provided around the outer peripheral crank portion 60c at a position on the inner side in the radial direction of the movable valve frame portion 60. The inner frame plate 60d is provided around the end portion of the outer peripheral crank portion 60c close to the first opening 12a in the flow path H direction. The inner frame plate 60d is formed in a flange shape parallel to the valve plate 50d.

The inner frame plate 60d has a thickness dimension in the flow path H direction that is smaller than the thickness dimension of the outer peripheral crank portion 60c in the flow path H direction. The inner peripheral crank portion 50c, which will be described later, is located at a position closer to the second opening 12b in the flow path H direction than the inner frame plate 60d. The radial width dimension of the movable valve frame portion 60 in the inner frame plate 60d is set to be substantially equal to the radial width dimension of the movable valve frame portion 60 in the inner peripheral crank portion 50c.

The outer frame plate 60e is provided around the outer peripheral crank portion 60c at a position on the outer side in the radial direction of the movable valve frame portion 60. The outer frame plate 60e is provided around the end portion of the outer peripheral crank portion 60c close to the second opening 12b in the flow path H direction. The outer frame plate 60e is provided around the outer side of the movable valve frame portion 60 in the outer peripheral crank portion 60c in the radial direction.

The outer frame plate 60e is a ridge having a smaller dimension in the flow path H direction than the outer peripheral crank portion 60c. The circular flange portion 30c is located closer to the first opening 12a in the flow path H direction than the outer frame plate 60e. As will be described later, a plurality of valve frame urging portions 90 are arranged on the outer frame plate 60e. A plurality of urging portion holes 68 incorporating the valve frame urging portion 90 are arranged in the outer frame plate 60e.

A valve frame urging portion (auxiliary spring) 90 is arranged between the movable valve frame portion 60 and the neutral valve portion 30.
The movable valve frame portion 60 is connected to the neutral valve portion 30 by a valve frame urging portion (auxiliary spring) 90 so that the position in the flow path H direction can be changed. The movable valve frame portion 60 and the circular portion 30a are concentric double rings.

A valve frame seal packing 61 is provided around the movable valve frame portion 60 on a surface facing (contacting) the inner surface 10A of the valve box. The valve frame seal packing 61 is arranged at a boundary position between the circular outer peripheral crank portion 60c and the inner frame plate 60d. The valve frame seal packing 61 is provided on the end surface of the outer peripheral crank portion 60c facing the first opening 12a.

The valve frame seal packing 61 is formed in an annular shape corresponding to the shape of the first opening 12a. The valve frame seal packing 61 is, for example, a seal portion made of an O-ring or the like. The valve frame seal packing 61 can be brought into close contact with the inner surface 10A of the valve box located around the first opening 12a. The valve frame seal packing 61 is arranged concentrically with the movable valve frame portion 60.

The valve frame seal packing 61 is provided at a position close to the outermost circumference of the outer peripheral crank portion 60c. The valve frame seal packing 61 comes into contact with the valve box inner surface 10A which is the peripheral edge of the first opening 12a when the valve is closed, and is pressed by the movable valve frame portion 60 and the valve box inner surface 10A. As a result, the first space and the second space are in a partitioned state.

The movable valve plate portion 50 is a plate body having a circular contour substantially concentric with the circular portion 30a.
The movable valve plate portion 50 is fitted inside the outer peripheral crank portion 60c of the movable valve frame portion 60 in the radial direction. A movable valve frame portion 60 is arranged so as to surround the circumference of the movable valve plate portion 50 at a position on the outer side in the radial direction of the movable valve plate portion 50.

The inner peripheral crank portion 50c of the movable valve plate portion 50 and the movable valve frame portion 60 are concentric double rings. The movable valve plate portion 50 is slidable with respect to the movable valve frame portion 60 in the flow path H direction. The movable valve plate portion 50 is movable in the position of the movable valve frame portion 60 in the flow path H direction.

Here, the movable valve plate portion 50 is movable between the following three positions.
The first position is a position where the movable valve plate portion 50 can operate the pendulum in the same manner with respect to the movable valve frame portion 60 and the neutral valve portion 30 which are in the position where the pendulum can be operated.

The second position is the same position as the movable valve plate portion 50 with respect to the movable valve frame portion 60 in the first position when the movable valve frame portion 60 is in a position where it can come into contact with the first opening 12a.
The third position is a position where the movable valve plate portion 50 can come into contact with the second opening 12b with respect to the movable valve frame portion 60 at the second position.

The movable valve plate portion 50 includes an inner peripheral crank portion 50c and a valve plate 50d.
In the movable valve plate portion 50, the inner peripheral crank portion 50c is provided around the peripheral edge of the surface of the valve plate 50d facing the first opening 12a, and the cross-sectional shape passing through the diameter is substantially U-shaped. .. The valve plate 50d is provided so as to seal the inside of the inner peripheral crank portion 50c in the radial direction. The valve plate 50d has a flat plate shape arranged in a direction substantially orthogonal to the flow path H direction.

The inner peripheral crank portion 50c is formed in a ring shape or a cylindrical shape in which the axial dimension is shorter than the radial dimension. The inner peripheral crank portion 50c is formed on the entire circumference of the outer edge of the movable valve plate portion 50. The inner peripheral crank portion 50c has an outer peripheral contour slightly larger than the contour of the first opening 12a and / or the second opening 12b. The inner peripheral crank portion 50c has an inner peripheral contour slightly smaller than the contour of the first opening 12a and / or the second opening 12b.

The inner peripheral crank portion 50c has a thickness dimension smaller than that of the outer peripheral crank portion 60c, that is, a dimension in the flow path H direction. The inner peripheral crank portion 50c has a thickness dimension larger than that of the valve plate 50d, that is, a dimension in the flow path H direction.

The inner peripheral crank portion 50c has a sliding surface 50b. The sliding surface 50b is a cylindrical surface having an axis parallel to the flow path H direction. The sliding surface 50b is provided on the outer peripheral surface of the inner peripheral crank portion 50c over the entire length in the circumferential direction. The inner peripheral crank portion 50c and the outer peripheral crank portion 60c are fitted in a state where the sliding surface 50b and the sliding surface 60b are in contact with each other. The sliding surface 50b and the sliding surface 60b of the movable valve frame portion 60 are positioned so as to be slidable with each other and face each other.

In the inner peripheral crank portion 50c, an urging portion hole 58 in which the valve plate urging portion (holding spring) 80 is housed and a peripheral groove 59 are alternately arranged in the circumferential direction of the movable valve plate portion 50. A plurality of valve plate urging portions (holding springs) 80 are provided at equal intervals separated from each other in the circumferential direction of the movable valve plate portion 50. It is preferable that a plurality of valve plate urging portions (holding springs) 80 are provided at three or more locations.

In the present embodiment, as the arrangement of the valve plate urging portions (holding springs) 80 separated from each other, the four valve plate urging portions (holding springs) 80 are positioned at the same angle (90 degrees) when viewed from the center O of the valve plate 50d. ) Shows a configuration example arranged so as to be separated from each other.
The angular position of the valve plate urging portion (holding spring) 80 when viewed from the center O of the valve plate 50d is configured to overlap the angular position of the valve box urging portion (pressing cylinder) 70 and the valve frame urging portion 90. Will be done.

The urging portion holes 58 are provided at four locations at equal intervals in the circumferential direction of the inner peripheral crank portion 50c, corresponding to the arrangement of the valve plate urging portion (holding spring) 80 as described above.
The peripheral groove 59 is provided around the inner peripheral crank portion 50c in the circumferential direction so as to connect between the adjacent urging portion holes 58.

The urging portion hole 58 and the peripheral groove 59 have an opening on the surface of the inner peripheral crank portion 50c facing the first opening 12a in the flow path H direction.
The inner peripheral crank portion 50c has an inner peripheral wall 59a, an outer peripheral wall 59b, and a bottom portion 59c between the inner peripheral wall 59a and the outer peripheral wall 59b, which are erected in the flow path H direction with the peripheral groove 59 sandwiched by the peripheral groove 59. And are formed.

The inner peripheral wall 59a and the outer peripheral wall 59b extend in the flow path H direction. The bottom portion 59c extends in a direction orthogonal to the flow path H direction substantially parallel to the valve plate 50d. The inner peripheral wall 59a is provided around the inside of the peripheral groove 59 in the radial direction of the movable valve plate portion 50.

The peripheral groove 59 is provided with a curved portion 59d that bends and connects the surface (bottom surface) of the bottom portion 59c and the surface (side surface) of the inner peripheral wall 59a. The peripheral groove 59 is provided with a curved portion 59e that bends and connects the surface (bottom surface) of the bottom portion 59c and the surface (side surface) of the outer peripheral wall 59b.

The bottom portion 59c of the peripheral groove 59 is located closer to the first opening 12a in the flow path H direction than the bottom portion 58c of the urging portion hole 58. The bottom portion 59c of the peripheral groove 59 is formed to be thicker than the bottom portion 58c of the urging portion hole 58.
The urging portion hole 58 is formed in a substantially cylindrical shape so as to accommodate the valve plate urging portion 80 described later. The bottom portion 58c of the urging portion hole 58 is flat, and a curved portion having a curvature half shape similar to that of the curved portions 59d and 59e can not be provided.

A valve plate 50d is connected to the inner peripheral wall 59a on the radial inside of the movable valve plate portion 50.
In the movable valve plate portion 50, the inner peripheral wall 59a of the inner peripheral crank portion 50c and the peripheral edge portion of the valve plate 50d are connected at a position closer to the opening of the peripheral groove 59 than the bottom portion 59c of the peripheral groove 59.
Further, inside the inner peripheral wall 59a in the radial direction, a valve is located at a position closer to the first opening 12a than the center position of the inner peripheral crank portion 50c in the thickness direction of the movable valve plate portion 50 in the flow path H direction. It is preferable that the plate 50d is connected.

The position where the inner peripheral wall 59a and the valve plate 50d are connected is such that the inner peripheral crank portion 50c is connected from the end position of the inner peripheral wall 59a which is close to the first opening 12a in the flow path H direction. It can be set appropriately up to the center position.
The position where the inner peripheral wall 59a and the valve plate 50d are connected is located at the end of the inner peripheral wall 59a which is closer to the first opening 12a than the center position of the inner peripheral crank portion 50c in the flow path H direction. It can be set in close proximity.

A sliding surface 50b is provided around the outer peripheral wall 59b on the outer side in the radial direction of the movable valve plate portion 50. On the outer peripheral wall 59b, a sliding seal packing (sliding seal member) 52 made of an O-ring or the like is arranged as a plate sliding seal portion on the outer side in the radial direction of the movable valve plate portion 50. A groove 52m for accommodating the sliding seal packing (sliding seal member) 52 is provided around the outer peripheral wall 59b.

The sliding seal packing (sliding seal member) 52 is provided at a position closer to the opening of the peripheral groove 59 than the outer peripheral groove 56, that is, at a position closer to the end of the outer peripheral wall 59b in the flow path H direction.
The groove 52m is provided at a position closer to the opening of the peripheral groove 59 than the outer peripheral groove 56, that is, at a position closer to the end of the outer peripheral wall 59b in the flow path H direction. The groove 52m is arranged at a position close to the first opening 12a of the outer peripheral wall 59b in the thickness direction of the movable valve plate portion 50 in the flow path H direction.

On the outer peripheral wall 59b, a ridge provided with a groove 51 m is provided around the movable valve plate portion 50 at a position on the outer side in the radial direction. The ridge provided with the groove 51 m is located close to the second opening 12b of the outer peripheral wall 59b in the thickness direction of the movable valve plate portion 50 in the flow path H direction.
The groove 51m is located outside the outer peripheral wall 59b in the radial direction of the movable valve plate portion 50. The groove 51m accommodates a counter cushion (seal member) 51, which will be described later. The groove 51m is provided on an end face located close to the second opening 12b in the ridge.

In the radial direction of the movable valve plate portion 50, an outer peripheral groove 56 is provided on the outer peripheral surface of the outer peripheral wall 59b.
The outer peripheral groove 56 is located between the groove 52 m and the groove 51 m in the flow path H direction. The outer peripheral groove 56 is arranged so as not to come into contact with the sliding seal packing (sliding seal member) 52.

The sliding seal packing (sliding seal member) 52 is arranged between the inner peripheral crank portion 50c and the outer peripheral crank portion 60c. The sliding seal packing 52 maintains a sealed state between the sliding surface 50b and the sliding surface 60b during sliding.

The sliding surface 50b, the sliding seal packing (sliding seal member) 52, and the sliding surface 60b form a plate sliding seal portion.

The movable valve plate portion 50 and the movable valve frame portion 60 are connected by a valve plate urging portion 80 (holding spring).

The movable valve plate portion 50 and the movable valve frame portion 60 can slide relative to each other in the reciprocating direction indicated by reference numerals B1 and B2 in FIG. The reciprocating directions B1 and B2 are directions perpendicular to the surfaces of the movable valve plate portion 50 and the movable valve frame portion 60. The reciprocating directions B1 and B2 are the flow path H directions parallel to the axial direction of the rotating shaft 20.

A counter cushion (seal member) 51 is provided around the movable valve plate portion 50 on a surface facing (contacting) the inner surface 10B of the valve box.
The counter cushion (seal member) 51 is formed in an annular shape corresponding to the shape of the second opening 12b. The counter cushion (seal member) 51 is an elastic body. The counter cushion (seal member) 51 can be brought into close contact with the inner surface 10B of the valve box, which is the peripheral edge of the second opening 12b when the valve is closed.

The counter cushion (seal member) 51 is a seal portion made of an O-ring or the like. The counter cushion (seal member) 51 is provided on the end surface of the inner peripheral crank portion 50c facing the second opening 12b. The counter cushion (seal member) 51 is provided at the outermost peripheral position of the inner peripheral crank portion 50c.

The counter cushion (seal member) 51 comes into contact with the valve box inner surface 10B which is the peripheral edge of the second opening 12b when the valve is closed, and is pressed by the movable valve plate portion 50 and the valve box inner surface 10B. As a result, the first space and the second space are in a partitioned state.

The counter cushion (seal member) 51 elastically deforms when the movable valve plate portion 50 and the valve box inner surface 10B collide with each other. The counter cushion (seal member) 51 cushions the impact when the movable valve plate portion 50 collides with the valve box inner surface 10B. This makes it possible to prevent the generation of dust.

The counter cushion (seal member) 51, the sliding seal packing (sliding seal member) 52, and the valve frame seal packing 61 are arranged on substantially the same cylindrical surface. The counter cushion (seal member) 51, the sliding seal packing (sliding seal member) 52, and the valve frame seal packing 61 are arranged so as to overlap each other when viewed in the flow path H direction. Therefore, a back pressure cancellation rate of about 100% can be obtained.

The movable valve plate portion 50 is provided with a vent hole 53.
The air vent hole 53 communicates with the inside of the outer peripheral groove 56 and the surface of the inner peripheral crank portion 50c facing the second opening 12b at a position closer to the center O than the counter cushion 51.
When the movable valve plate portion 50 and the valve box inner surface 10B collide, a closed space is formed by the movable valve plate portion 50, the valve box inner surface 10B, and the counter cushion 51. The vent hole 53 removes gas from this enclosed space.

The valve plate urging portion (holding spring) 80 is built in the urging portion hole 58 of the movable valve plate portion 50.
The valve plate urging portion 80 is a region where the movable valve frame portion 60 and the movable valve plate portion 50 overlap in the direction of the flow path H, that is, the inner frame plate 60d of the movable valve frame portion 60 and the inside of the movable valve plate portion 50. It is arranged on the peripheral crank portion 50c.

A plurality of valve plate urging portions (holding springs) 80 are provided at equal intervals separated from each other in the circumferential direction of the movable valve plate portion 50. It is preferable that the valve plate urging portion 80 is provided at three or more locations. Two of the plurality of valve plate urging portions 80 are arranged as a set. The pair of valve plate urging portions 80 are arranged at positions at both ends of the diameter passing through the center O of the movable valve plate portion 50, respectively.

The plurality of valve plate urging portions 80 are provided so as to be separated from each other in the circumferential direction of the movable valve plate portions 50 for each set.
As a specific arrangement of the plurality of valve plate urging portions 80, as shown in FIG. 14, four valve plate urging portions 80 are arranged at the same angle position (90 °) when viewed from the center O of the valve plate 50d. It is possible to show the configured configuration.

The valve plate urging portion 80 guides (regulates) the movement of the movable valve plate portion 50 in the flow path H direction. The valve plate urging portion 80 can change the thickness dimension of the movable valve frame portion 60 and the movable valve plate portion 50 in the flow path H direction. The valve plate urging portion 80 interlocks the movable valve plate portion 50 with the moving reciprocating directions B1 and B2 of the movable valve frame portion 60.

FIG. 15 is an enlarged cross-sectional view along a flow path showing the valve box urging portion, the valve frame urging portion, and the valve plate urging portion of the partition valve according to the present embodiment.
The valve plate urging portion 80 connects the inner frame plate 60d of the movable valve frame portion 60 and the inner peripheral crank portion 50c of the movable valve plate portion 50.

The valve plate urging portion 80 includes a plate guide pin 81, a coil spring 82, a pressure receiving portion 83, a lid portion 58f, and a regulation cylinder 85.
The plate guide pin 81 is formed of a rod-shaped body having a substantially uniform thickness. The plate guide pin 81 has a bolt shape. The plate guide pin 81 penetrates the inside of the valve plate urging portion 80. The plate guide pin 81 is erected in the flow path H direction. The base portion 81b of the plate guide pin 81 is fixed to the inner frame plate 60d of the movable valve frame portion 60. The base portion 81b of the plate guide pin 81 penetrates the inner frame plate 60d. The long shaft portion of the plate guide pin 81 is erected from the inner frame plate 60d toward the urging portion hole 58.

The plate guide pin 81 is arranged coaxially with the urging portion hole 58 of the inner peripheral crank portion 50c. The tip 81a of the plate guide pin 81 is located inside the urging portion hole 58. The tip 81a of the plate guide pin 81 is provided with a pressure receiving portion 83 having a diameter larger than that of the long shaft portion of the plate guide pin 81.
The pressure receiving portion 83 is arranged at a position capable of contacting the bottom portion 58c of the urging portion hole 58 or not contacting the bottom portion 58c. The pressure receiving portion 83 is provided around the tip 81a of the plate guide pin 81 in a flange shape. The pressure receiving portion 83 projects radially outward from the plate guide pin 81.

A regulation cylinder 85 is slidably positioned on the long axis portion of the plate guide pin 81 on the outer side in the radial direction.
The regulation cylinder 85 has a tubular shape coaxial with the long shaft portion of the plate guide pin 81. The regulation cylinder 85 regulates the sliding position and sliding direction of the plate guide pin 81. One end of the regulation cylinder 85 is connected to a lid portion 58f that closes the urging portion hole 58. The axial dimension of the regulation cylinder 85 is smaller than the axial dimension of the plate guide pin 81. A bush 85a that comes into contact with the plate guide pin 81 is arranged inside the regulation cylinder 85 in the radial direction.

The lid portion 58f is arranged so as to close the opening of the urging portion hole 58. The lid portion 58f is fixed at the opening position of the urging portion hole 58. The lid portion 58f is provided with a hole portion 58g as a through hole.
The hole portion 58 g is coaxial with the regulation cylinder 85 and has the same diameter. A plate guide pin 81 is fitted in the hole portion 58 g and the regulation cylinder 85.

A fixed lid 58f1 is further provided at a position close to the inner frame plate 60d of the lid portion 58f so as to come into contact with the lid portion 58f. The fixed lid 58f1 reinforces the fixation of the lid 58f to the opening of the urging hole 58. The fixed lid 58f1 is concentrically provided with through holes larger than the hole portion 58g.

The coil spring (holding spring) 82 is an elastic member such as a spiral spring. The coil spring (holding spring) 82 is arranged to have an urging shaft parallel to the axis of the urging portion hole 58. The coil spring (holding spring) 82 is built in the urging portion hole 58 of the movable valve plate portion 50. The coil spring (holding spring) 82 is a double helix and has an inner coil spring 82a and an outer coil spring 82b having different diameters.

Both the inner coil spring 82a and the outer coil spring 82b are arranged coaxially with the plate guide pin 81.
The coil spring (holding spring) 82 is provided in double to strengthen the urging force, but it can also be made single.

One end of the coil spring (holding spring) 82 is in contact with the lid portion 58f, and the other end is in contact with the pressure receiving portion 83. The coil spring (holding spring) 82 is urged to press the lid portion 58f and the pressure receiving portion 83.

The lid portion 58f and the fixed lid 58f1 are provided with a vent hole 85b that communicates the vicinity of the bottom portion 58c inside the urging portion hole 58 and the space located closer to the inner frame plate 60d than the lid portion 58f. Be done.
The base portion 81b and the inner frame plate 60d of the plate guide pin 81 have a space located closer to the inner frame plate 60d than the lid portion 58f and a hollow portion 11 closer to the valve box inner surface 10A than the inner frame plate 60d. , Is provided with an air vent hole 85c for communicating with the above.

A seal member 85d such as an O-ring may be provided around a position closer to the lid portion 58f than the bush 85a of the regulation cylinder 85.

By sliding the plate guide pin 81 and the regulation cylinder 85 in the axial direction with each other, the plate guide pin 81 and the regulation cylinder 85 can be connected to each other without changing the axial angle between the plate guide pin 81 and the regulation cylinder 85. The position in the flow path H direction changes. As a result, the inner frame plate 60d to which the base portion 81b of the plate guide pin 81 is fixed and the lid portion 58f to which one end of the regulation cylinder 85 is fixed move to each other in the flow path H direction. As a result, the position regulation between the movable valve frame portion 60 and the movable valve plate portion 50 is guided.

The coil spring (holding spring) 82 presses the lid portion 58f and the pressure receiving portion 83 in a direction in which they are separated from each other.
Since the pressure receiving portion 83, the tip end 81a of the plate guide pin 81, the base portion 81b of the plate guide pin 81, and the inner frame plate 60d are fixed to each other, their positional relationship does not change. Therefore, the coil spring (holding spring) 82 constantly urges the lid portion 58f and the pressure receiving portion 83 so that the lid portion 58f and the inner frame plate 60d are close to each other in the flow path H direction.

Here, when the inner frame plate 60d and the lid portion 58f are moved in the flow path H direction so as to be separated from each other, the distance between the lid portion 58f and the pressure receiving portion 83 is reduced. As a result, the coil spring (holding spring) 82 contracts. Even in this case, since the pressure receiving portion 83, the tip end 81a of the plate guide pin 81, the base portion 81b of the plate guide pin 81, and the inner frame plate 60d are fixed to each other, the positional relationship does not change.

Therefore, the contracted coil spring (holding spring) 82 further urges the lid portion 58f and the pressure receiving portion 83 so that the lid portion 58f and the inner frame plate 60d are close to each other in the flow path H direction. As a result, the movable valve plate portion 50 and the movable valve frame portion 60 move with each other in the direction in which the lid portion 58f and the pressure receiving portion 83 with the expanded diameter of the plate guide pin 81 are separated from each other.

In the valve plate urging portion 80, when the movable valve plate portion 50 and the movable valve frame portion 60 slide with each other, the plate guide pin 81 penetrating the hole portion 58 g is axially driven by the regulation cylinder 85 (bush 85a). In a state where the direction of the plate guide pin 81 is restricted, the plate guide pin 81 moves in the axial direction with respect to the lid portion 58f and the regulation cylinder 85. Then, the coil spring (holding spring) 82 contracts in the axial direction of the plate guide pin 81. The contracted coil spring (holding spring) 82 urges the lid portion 58f that closes the urging portion hole 58 in a direction close to the inner frame plate 60d of the movable valve frame portion 60.

As a result, the movable valve plate portion 50 and the movable valve frame portion 60 receive the urging force of the valve plate urging portion 80 in the direction in which the thickness dimension in the flow path H direction is reduced.

When the movable valve plate portion 50 and the movable valve frame portion 60 slide with each other, the valve plate urging portion 80 can regulate the sliding direction so as not to deviate from the reciprocating directions B1 and B2.
Further, even when the movable valve plate portion 50 and the movable valve frame portion 60 slide, the movable valve plate portion 50 and the movable valve frame portion 60 can be moved in parallel without changing their postures.

The valve plate urging portion 80 (holding spring) and the valve frame urging portion (auxiliary spring) 90 are provided so as to have an urging force capable of urging in the flow path H direction which is opposite to each other.

The valve frame urging portion (auxiliary spring) 90 is an outer frame plate that serves as a position regulating portion for the circular flange portion 30c of the neutral valve portion 30 and the movable valve frame portion 60 that overlaps the circular flange portion 30c when viewed in the direction of the flow path H. It is arranged between 60e and. The valve frame urging portion (auxiliary spring) 90 urges the neutral valve portion 30 toward the central position in the flow path H direction of the movable valve frame portion 60.

The valve frame urging portion (auxiliary spring) 90 is built in the urging portion hole 68 of the outer frame plate 60e. The valve frame urging portion (auxiliary spring) 90 is a region where the neutral valve portion 30 and the movable valve frame portion 60 overlap in the direction of the flow path H, that is, the circular flange portion 30c of the neutral valve portion 30 and the movable valve frame portion. It is arranged on the outer frame plate 60e of 60.

A plurality of valve frame urging portions (auxiliary springs) 90 are provided at equal intervals separated from each other in the circumferential direction of the circular flange portion 30c. It is preferable that the valve frame urging portion (auxiliary spring) 90 is provided at three or more locations corresponding to the valve plate urging portion 80. Two of the plurality of valve frame urging portions (auxiliary springs) 90 are arranged as a set. A set of valve frame urging portions (auxiliary springs) 90 are arranged at positions at both ends of the diameter passing through the center O of the movable valve frame portion 60, respectively.

The plurality of valve frame urging portions (auxiliary springs) 90 are provided for each set (set) so as to be separated from each other in the circumferential direction of the movable valve frame portion 60. As a specific arrangement of the plurality of valve frame urging portions (auxiliary springs) 90, in FIG. 14, four valve frame urging portions (auxiliary springs) 90 are viewed from the center O of the movable valve frame portion 60. Can indicate a configuration in which are arranged at the same angular position (90 °).

The angular position of the valve frame urging portion (auxiliary spring) 90 in the circumferential direction of the circular flange portion 30c when viewed from the center O of the valve plate 50d is the valve plate urging portion (holding spring) in the circumferential direction of the movable valve plate portion 50. It is configured to overlap the 80 angular positions. The valve frame urging portion (auxiliary spring) 90 and the valve plate urging portion (holding spring) 80 are arranged on the same straight line passing through the center O of the valve plate 50d. The valve frame urging portion (auxiliary spring) 90 is arranged on a straight line passing through the center O at a position separated from the center O of the valve plate 50d by the valve plate urging portion (holding spring) 80.

The valve frame urging portion (auxiliary spring) 90 guides (regulates) the movement of the neutral valve portion 30 and the movable valve frame portion 60 in the flow path H direction. The valve frame urging portion (auxiliary spring) 90 can change the thickness dimension of the neutral valve portion 30 and the movable valve frame portion 60 in the flow path H direction. The valve frame urging portion (auxiliary spring) 90 reciprocates the movable valve frame portion 60 in the reciprocating directions B1 and B2 with respect to the circular flange portion 30c.

The valve frame urging portion (auxiliary spring) 90 connects the circular flange portion 30c of the neutral valve portion 30 and the outer frame plate 60e of the movable valve frame portion 60. The urging portion hole 68 is provided in the outer frame plate 60e of the movable valve frame portion 60. The urging portion hole 68 is formed in a cylindrical shape having an axis in the flow path H direction. The urging portion hole 68 is provided so as to penetrate the outer frame plate 60e of the movable valve frame portion 60.

In the urging portion hole 68, the opening of the outer frame plate 60e on the surface facing the second opening 12b is closed by the pressure receiving portion 93 as described later. In the urging portion hole 68, the opening at a position close to the first opening 12a in the flow path H direction is not closed. That is, the urging portion hole 68 opens in the same direction as the urging portion hole 58 of the movable valve plate portion 50. The urging portion hole 68 is provided at a position close to the outer peripheral crank portion 60c which is inward in the radial direction in the radial direction of the movable valve frame portion 60 in the outer frame plate 60e.

The valve frame urging portion (auxiliary spring) 90 has a frame guide pin 91, a frame coil spring 92, and a regulation cylinder 95.
The frame guide pin 91 is formed of a rod-shaped body having a substantially uniform thickness. The frame guide pin 91 penetrates inside the valve frame urging portion (auxiliary spring) 90. The frame guide pin 91 is erected in the flow path H direction. The frame guide pin 91 is fixed to the outer frame plate 60e of the movable valve frame portion 60. The frame guide pin 91 is arranged coaxially with the urging portion hole 68 of the outer frame plate 60e. The base portion 91b of the frame guide pin 91 is provided with a pressure receiving portion 93 having a diameter larger than that of the long shaft portion of the frame guide pin 91.

The pressure receiving portion 93 is fixed at a position facing the second opening 12b in the flow path H direction in the urging portion hole 68. The pressure receiving portion 93 closes the opening of the urging portion hole 68 toward the second opening 12b in the flow path H direction. The pressure receiving portion 93 forms the bottom portion of the urging portion hole 68. That is, the base portion 91b of the frame guide pin 91 forms the bottom portion of the urging portion hole 68 as the pressure receiving portion 93. The pressure receiving portion 93 may be screwable into the opening of the biasing portion hole 68. In this case, the frame guide pin 91 can be bolt-shaped.

The pressure receiving portion 93 is exposed on the surface of the movable valve frame portion 60 facing the valve box urging portion (pressing cylinder) 70, which will be described later. The base portion 91b of the frame guide pin 91 is fixed to the outer frame plate 60e of the movable valve frame portion 60.

The long shaft portion of the frame guide pin 91 is erected from the urging portion hole 68 of the outer frame plate 60e toward the circular flange portion 30c. The circular flange portion 30c is provided with a recess 30 cm on the surface facing the first opening 12a.
At the central position of the recess 30 cm, a through hole 30 g is provided so as to penetrate the circular flange portion 30c in the flow path H direction.
A position close to the tip 91a of the frame guide pin 91 is slidable and penetrates through the through hole 30g.

Therefore, the tip 91a of the frame guide pin 91 penetrates the circular flange portion 30c. The tip 91a of the frame guide pin 91 can be located in the recess 30 cm provided in the circular flange portion 30c. The axial length of the tip 91a of the frame guide pin 91 is set so as not to be closer to the valve box inner surface 10A than the valve frame seal packing 61 in the flow path H direction.
A neutral spacer 94 is provided around the tip 91a of the frame guide pin 91.

The neutral spacer 94 is attached to the tip 91a position of the frame guide pin 91 by the C ring 94a. In the neutral spacer 94, the C ring 94a can be located inside the recess 30 cm.

A regulation cylinder 95 slidable with respect to the frame guide pin 91 is located radially outside on the long shaft portion located at the center of the frame guide pin 91 in the axial direction.
The regulation cylinder 95 has a tubular shape coaxial with the long axis portion of the frame guide pin 91. The regulation cylinder 95 regulates the sliding position and sliding direction of the frame guide pin 91. The axial dimension of the regulation cylinder 95 is smaller than the axial dimension of the frame guide pin 91. A bush 95a that comes into contact with the frame guide pin 91 is arranged inside the regulation cylinder 95 in the radial direction.

A flange portion 95f is provided around one end of the regulation cylinder 95.
The flange portion 95f is fixedly connected to the circular flange portion 30c at a position on the back surface of the recess 30 cm. The regulation cylinder 95 is fixed to the surface of the circular flange portion 30c facing the outer frame plate 60e by the flange portion 95f.

The flange portion 95f and the regulation cylinder 95 have a through hole 95g extending in the flow path H direction. The through hole 95g communicates with the flange portion 95f and the regulation cylinder 95. The through hole 95 g is coaxial with the through hole 30 g. Similar to the through hole 30g, the through hole 95g is slidably penetrated at a position close to the tip 91a of the frame guide pin 91.

The frame coil spring 92 constitutes the valve frame urging portion 90 as an auxiliary spring. The frame coil spring 92 is housed inside the urging portion hole 68. The frame coil spring 92 is arranged coaxially at a position around the frame guide pin 91.
The frame coil spring 92 is an elastic member such as a spring, and is arranged to have an urging shaft parallel to the axis of the urging portion hole 68.

One end of the frame coil spring 92 is in contact with the pressure receiving portion 93 around the base portion 91b of the frame guide pin 91. The other end of the frame coil spring 92 is in contact with the flange portion 95f around the through hole 95g. The frame coil spring 92 urges the periphery of the base portion 91b of the frame guide pin 91 and the flange portion 95f around the through hole 95g in opposite directions in the flow path H direction. The frame coil spring 92 may be configured to have, for example, a double coil spring to strengthen the urging force.

In the valve frame urging portion (auxiliary spring) 90, when the movable valve frame portion 60 moves with respect to the neutral valve portion 30, in the axial direction of the through hole 95 g of the regulation cylinder 95 fixed to the circular flange portion 30c. , The frame guide pin 91 moves in the axial direction. At this time, the frame guide pin 91 slides with respect to the bush 95a. Then, the tip 91a of the frame guide pin 91 projects from the recess 30 cm toward the inner surface 10A of the valve box.

As a result, the flange portion 95f of the regulation cylinder 95 and the pressure receiving portion 93, which is the bottom of the urging portion hole 68, are close to each other in the flow path H direction. At this time, the frame coil spring 92 contracts. The urging force of the contracted frame coil spring 92 presses the pressure receiving portion 93 and the flange portion 95f in a direction in which they are separated from each other.

That is, the pressure receiving portion 93 at the bottom of the urging portion hole 68 and the flange portion 95f on the back surface of the circular flange portion 30c move in positions so as to be separated from each other in the flow path H direction. As a result, the movable valve frame portion 60 moves in position with respect to the neutral valve portion 30.

In this way, the valve frame urging portion (auxiliary spring) 90 makes it possible to change the thickness dimension of the neutral valve portion 30 and the movable valve frame portion 60 in the flow path H direction. The valve frame urging portion (auxiliary spring) 90 moves the movable valve frame portion 60 in the reciprocating directions B1 and B2 with respect to the neutral valve portion 30 that does not move in the flow path H direction.

At this time, in the valve frame urging portion (auxiliary spring) 90, the regulation cylinder 95 does not tilt in the axial direction of the frame guide pin. When the movable valve frame portion 60 moves in the flow path H direction with respect to the neutral valve portion 30 by the valve frame urging portion (auxiliary spring) 90, the moving direction of the movable valve frame portion 60 is the reciprocating direction B1, Regulate so that it does not deviate from B2. Therefore, the movable valve frame portion 60 moves in parallel without changing the posture with respect to the neutral valve portion 30.

At the same time, the movable valve frame portion 60 can be regulated so as not to move with respect to the neutral valve portion 30 except in the flow path H direction. Specifically, it is possible to prevent the movable valve frame portion 60 fitted to the circular portion 30a from moving in the circumferential direction. As a result, in the pendulum operation of the valve body 5, the holding state of the movable valve frame portion 60 with respect to the neutral valve portion 30 can be stabilized, and the operation stability of the partition valve 100 can be improved.

Further, even when the movable valve frame portion 60 is positioned in the flow path H direction with respect to the neutral valve portion 30, the frame guide pin 91 and the plate guide pin 81 are parallel to each other, so that the movable valve frame portion 60 can be moved by the valve plate urging portion 80. The valve plate portion 50 follows and moves in the reciprocating directions B1 and B2. This does not apply when a differential pressure in the flow path H direction is applied to the valve plate 50d.

Here, regarding the position movement of the movable valve frame portion 60 in the flow path H direction, the neutral valve portion 30 and the movable valve plate portion 50 are formed by the valve plate urging portion (holding spring) 80 and the valve frame urging portion (auxiliary spring) 90. When the movable valve frame portion 60 and the movable valve frame portion 60 slide with each other, the sliding directions thereof can be regulated so as not to deviate from the reciprocating directions B1 and B2. Further, even when the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 slide, the postures of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 change. It is possible to translate relatively without doing so.

A plurality of valve box urging portions (pressing cylinders) 70 are built in the valve box 10.
The valve box urging portion (pressing cylinder) 70 constitutes an elevating mechanism that presses the movable valve frame portion 60 in the direction toward the seal surface. The valve box urging portion (pressing cylinder) 70 is located at a position where the movable valve frame portion 60 can be urged in the direction close to the first opening 12a in the flow path H direction, that is, around the second opening 12b. Placed in position.
The valve box urging portion (pressing cylinder) 70 is the valve box urging portion (pressing cylinder) 70 in the first to second embodiments.

In the valve box urging portion (pressing cylinder) 70 of the present embodiment, the telescopic rod (movable portion) 72 is extendable from the fixed portion 71 in the direction close to the first opening 12a along the flow path H direction. Cylinder.
The valve box urging portion (pressing cylinder) 70 is provided with a multi-stage sealing means so that oil, which is a working fluid, does not leak to the hollow portion 11 on the vacuum side during hydraulic drive.
A ring-shaped seal member (O-ring) 77f is provided around the telescopic rod (movable portion) 72, for example, at a position close to the movable valve frame portion 60. The telescopic rod (movable portion) 72 is expandable and contractible in a state where the boundary between the fixed portion 71 and the hollow portion 11 on the vacuum side is sealed.

The valve box urging portion (pressing cylinder) 70 has a function of moving the movable valve frame portion 60 toward the first opening 12a. The valve box urging portion (pressing cylinder) 70 abuts the movable valve frame portion 60 against the valve box inner surface 10A and presses the movable valve frame portion 60 against the valve box inner surface 10A to close the flow path H (closed). Valve operation).

The valve box urging portion (pressing cylinder) 70 is arranged in the valve box 10 at a position where it can be pressed without changing the posture of the movable valve frame portion 60. Specifically, in the valve box urging portion (pressing cylinder) 70, the axis of the telescopic rod (movable portion) 72 coincides with the axis of the frame guide pin 91 of the valve frame urging portion (auxiliary spring) 90. Be placed.

The position where the tip portion 72a of the telescopic rod (movable portion) 72 presses the valve frame urging portion (auxiliary spring) 90 is arranged so as to be the base portion 91b of the frame guide pin 91. That is, the place where the tip end portion 72a of the telescopic rod (movable portion) 72 presses the valve frame urging portion (auxiliary spring) 90 is arranged so as to be the pressure receiving portion 93 of the frame guide pin 91.

The plurality of valve box urging portions (pressing cylinders) 70 are provided apart from each other along the periphery of the contour of the second opening 12b. A plurality of valve box urging portions (pressing cylinders) 70 are provided at equal intervals separated from each other in the circumferential direction of the contour of the second opening 12b.

It is preferable that the valve box urging portion (pressing cylinder) 70 is provided at three or more locations corresponding to the valve frame urging portion (auxiliary spring) 90. Two of the plurality of valve box urging portions (pressing cylinders) 70 are arranged as a set. A set of valve box urging portions (pressing cylinders) 70 are arranged at positions that are radially outer of both ends in a diameter (straight line) passing through the center O of the second opening 12b. The pair of valve box urging portions (pressing cylinders) 70 are arranged at both ends of the diameter passing through the center O of the movable valve frame portion 60, respectively, like the valve frame urging portion (auxiliary spring) 90. ..

The plurality of valve box urging portions (pressing cylinders) 70 are provided for each set (set) so as to be separated from each other in the circumferential direction of the contour of the second opening 12b. As for the specific arrangement of the plurality of valve box urging portions (pressing cylinders) 70, in FIG. 14, four valve box urging portions (pressing cylinders) 70 are viewed from the center O of the second opening 12b. Can indicate a configuration in which are arranged at the same angular position (90 °).

The angular position of the valve box urging portion (pressing cylinder) 70 in the circumferential direction of the circular flange portion 30c when viewed from the center O of the second opening 12b is the valve plate urging portion (holding) of the movable valve plate portion 50 in the circumferential direction. It is configured to overlap the angular positions of the spring) 80 and the valve frame urging portion (auxiliary spring) 90.

The valve box urging portion (pressing cylinder) 70, the valve frame urging portion (auxiliary spring) 90, and the valve plate urging portion (holding spring) 80 are arranged on the same straight line passing through the center O of the valve plate 50d. .. The valve box urging portion (pressing cylinder) 70, like the valve frame urging portion (auxiliary spring) 90, is on a straight line passing through the center O and is centered on the valve plate 50d rather than the valve plate urging portion (holding spring) 80. It is arranged at a position away from O.

The valve box urging portion (pressing cylinder) 70 changes from the flow path communication state (FIGS. 13 and 15) to the valve closed state (FIGS. 16 to 19) at the valve opening shielding position (sliding preparation position). The telescopic rod (moving part) 72 is extended by hydraulic pressure.

At this time, the valve box urging portion (pressing cylinder) 70 urges the movable valve frame portion 60 with which the tip portion 72a is in contact. As a result, the movable valve frame portion 60 moves toward the first opening 12a in the flow path H direction. The valve frame seal packing 61 is in close contact with the inner surface 10A of the valve box around the first opening 12a.

In the plurality of valve box urging portions (pressing cylinders) 70, the extension operations of the telescopic rods (movable portions) 72 can all be operated at substantially the same time.

Here, the tip end portion 72a of the telescopic rod (movable portion) 72 comes into contact with the pressure receiving portion 93 at a position where the axis of the telescopic rod (movable portion) 72 is extended. Since the pressure receiving portion 93 is fixed at the bottom position of the urging portion hole 68, the pressing force of the telescopic rod (movable portion) 72 is transmitted to the outer peripheral crank portion 60c via the pressure receiving portion 93 and the outer frame plate 60e. Will be done.

At this time, the position of the movable valve frame portion 60 with respect to the neutral valve portion 30 is regulated by the frame guide pin 91 and the regulation cylinder 95. By aligning the axis of the frame guide pin 91 with the axis of the telescopic rod (movable portion) 72, the movable valve frame portion 60 moves in the moving direction when moving in the flow path H direction with respect to the neutral valve portion 30. On the other hand, the pressing force in the moving direction acts at the same position / direction.

Hereinafter, the operation of the partition valve 100 according to the present embodiment will be described in detail.

First, in the partition valve 100 according to the present embodiment, consider a state in which the valve body 5 is in a retracted position as a hollow portion 11 in which the flow path H is not provided, as shown by a broken line in FIG. At this time, the movable valve portion 40 is not in contact with either the valve box inner surface 10A or the valve box inner surface 10B.

In this state, the rotating shaft driving unit 200 rotates the rotating shaft 20 in the direction indicated by the reference numeral R01 (the direction intersecting the direction of the flow path H). Then, the neutral valve portion 30 and the movable valve portion 40 rotate and move along the direction R01 by a pendulum motion. By this rotation, the valve body 5 moves from the retracted position to the valve opening shielding position (sliding preparation position) which is a position facing the first opening 12a as shown by a solid line in FIG.

In a state where the valve body 5 is in the valve opening shielding position (sliding preparation position), the valve box urging portion (pressing cylinder) 70 is in the direction close to the first opening 12a in the flow path H direction, and the telescopic rod ( Movable part) 72 is extended. The telescopic rod (movable portion) 72 abuts on the movable valve frame portion 60 and presses the movable valve frame portion 60. The movable valve frame portion 60 moves in a direction close to the first opening 12a.
The movable valve frame portion 60 comes into contact with the valve box inner surface 10A by the valve box urging portion (pressing cylinder) 70. At this time, the valve frame seal packing 61 comes into close contact with the valve box inner surface 10A located around the first opening 12a. As a result, as shown in FIGS. 16 to 19, the flow path H is closed (valve closing operation).

On the contrary, in the state where the flow path H is closed, the valve box urging portion (pressing cylinder) 70 retracts the telescopic rod (movable portion) 72. As a result, the urging force from the telescopic rod (movable portion) 72 to the movable valve frame portion 60 is reduced. Then, the movable valve frame portion 60 is pulled away from the inner surface of the valve box 10 by the urging force of the valve frame urging portion 90. The sealed state of the movable valve frame portion 60 and the valve box inner surface 10A is released.

As a result, as shown in FIGS. 12 to 15, the flow path H is opened (release operation).
The valve closing operation and the releasing operation of the movable valve portion 40 are performed by a mechanical contact operation by the valve box urging portion (pressing cylinder) 70 and a mechanical separation operation by the valve frame urging portion 90.

After the release operation, the rotary shaft drive unit 200 rotates the rotary shaft 20 in the direction indicated by the reference numeral R02. Then, the movable valve portion 40 moves from the valve opening shielding position (sliding preparation position) to the retracted position (evacuation operation).
By this release operation and the retracting operation, a valve opening operation for putting the movable valve portion 40 into the valve opening state is performed.
In a series of operations (valve closing operation, releasing operation, retracting operation), the valve plate urging portion 80 links the movable valve frame portion 60 and the movable valve plate portion 50.

[State of valve body in retractable position (FREE)]
In FIGS. 12 to 14, the movable valve portion 40 (movable valve frame portion 60, movable valve plate portion 50) at the valve opening shielding position (sliding preparation position) is the valve box inner surface 10A of any of the valve boxes 10. It shows a state where it is not in contact with 10B. This state is referred to as a state in which the valve body is FREE.

In the state where the valve body is FREE, the telescopic rod (movable part) 72 of the valve box urging portion (pressing cylinder) 70 is in a degenerate state. At this time, the telescopic rod (movable portion) 72 does not protrude from the valve box inner surface 10B and is buried at a position closer to the fixed portion 71 than the valve box inner surface 10A. That is, the valve box urging portion (pressing cylinder) 70 is not in contact with the valve body 5. Further, the frame guide pin 91 does not protrude from the recess 30 cm.

FIG. 16 is an enlarged cross-sectional view along a flow path showing the peripheral edge of the partition valve in the present embodiment. FIG. 17 is an enlarged cross-sectional view along a flow path showing the valve box urging portion, the valve frame urging portion, and the valve plate urging portion of the partition valve according to the present embodiment.
Next, the valve box urging portion (pressing cylinder) 70 is driven from the state where the valve body is FREE. Then, the tip portion 72a of the telescopic rod (movable portion) 72 comes into contact with the lower surface 60sb of the movable valve frame portion 60, as shown by arrows F1 in FIGS. 16 and 17. At this time, the tip portion 72a of the telescopic rod (movable portion) 72 comes into contact with the pressure receiving portion 93.

As a result, the movable valve frame portion 60 moves toward the inner surface 10A of the valve box. Further, the movable valve frame portion 60 moves and the valve frame seal packing 61 is in contact with the valve box inner surface 10A, which is the state of the valve closed position (valve closed state). Further, the frame guide pin 91 protrudes from the recess 30 cm.

At this time, the movable valve plate portion 50 is moved in the same direction as the movable valve frame portion 60 by the valve plate urging portion (holding spring) 80. At the same time, the movable valve plate portion 50 and the movable valve frame portion 60 maintain the sliding seal state via the sliding seal packing 52.
In the state where the valve body is FREE, the valve box urging portion (pressing cylinder) 70 brings the movable valve frame portion 60 into contact with the valve box inner surface 10A of the valve box 10 to close the flow path H (valve closing operation).

[Valve body in valve closed position (no positive pressure or differential pressure)]
16 and 17 show a state in which the flow path H is closed by the valve closing operation.
This state is referred to as a valve closed state with no positive pressure / no differential pressure. The valve closed state with no positive pressure / differential pressure is a state in which the valve body 5 is in contact with one inner surface of the valve box 10 and not in contact with the other inner surface. That is, in the valve closed state with no positive pressure / differential pressure, the movable valve frame portion 60 of the valve body 5 comes into contact with the valve box inner surface 10A around the first opening 12a. At the same time, the valve body 5 is not in contact with the valve box inner surface 10B located around the second opening 12b.

In the valve closed state with no positive pressure / differential pressure, the telescopic rod (movable part) 72 is maintained in the valve box urging portion (pressing cylinder) 70 in a state of being extended in the direction toward the movable valve frame portion 60. That is, the state in which the tip portion 72a is in contact with the lower surface 60sb of the movable valve frame portion 60 is maintained. Further, the valve frame seal packing 61 is maintained in contact with the inner surface 10A of the valve box around the first opening 12a of the valve box 10. Further, the frame guide pin 91 maintains a state of protruding from the recess 30 cm.

[Valve closed when the valve body is in the reverse pressure position]
FIG. 18 is an enlarged cross-sectional view along a flow path showing the peripheral edge of the partition valve in the present embodiment. FIG. 19 is an enlarged cross-sectional view along a flow path showing a valve box urging portion, a valve frame urging portion, and a valve plate urging portion of the partition valve according to the present embodiment.
18 and 19 show a state in which the flow path H is closed in a reverse pressure state.
This state is referred to as a reverse pressure valve closed state. The reverse pressure valve closed state is a state in which the valve body 5 is in contact with both valve box inner surfaces 10A and 10B in the flow path H direction. That is, in the reverse pressure valve closed state, the movable valve plate portion 50 of the valve body 5 is kept in contact with the valve box inner surface 10A around the first opening 12a while the movable valve frame portion 60 of the valve body 5 is in contact with the valve box inner surface 10A. It is also in contact with the inner surface 10B of the valve box located around the second opening 12b. Here, the reverse pressure means that pressure is applied to the valve body in the direction from the valve closed state to the valve open state.

When the valve body 5 receives a reverse pressure while the telescopic rod (movable portion) 72 is extended, the movable valve plate portion 50 is reciprocated with respect to the movable valve frame portion 60 by the valve plate urging portion 80 (FIG. It moves while sliding in 18, 19). A sealed state is maintained between the movable valve frame portion 60 and the movable valve plate portion 50 via the sliding seal packing 52.
As a result, the movable valve plate portion 50 collides with the valve box inner surface 10B around the second opening 12b. At this time, the counter cushion 51 alleviates the impact caused by the collision at the movable valve plate portion 50. The reverse pressure canceling mechanism is a mechanism in which the force received by the valve body 5 is received by the valve box inner surface 10B (back side body) of the valve box 10.

Further, the positive pressure / no differential pressure is set from the reverse pressure valve closed state. In this state, the movable valve frame portion 60 is separated from the inner surface of the valve box 10 by the urging force of the frame coil spring 92 of the valve frame urging portion 90, and the movable valve frame portion 60 is retracted to open the flow path H. (Release operation).

In the partition valve 100 of the present embodiment, when the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 slide with each other, it is possible to accurately regulate each other's positions. That is, it is possible to accurately regulate the positions of the neutral valve portion 30 and the movable valve frame portion 60. At the same time, it is possible to accurately regulate the positions of the movable valve frame portion 60 and the movable valve plate portion 50.
In particular, the sliding directions of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 can be regulated so as not to deviate from the reciprocating directions B1 and B2.

Further, even when the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 slide, the postures of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 change. It is possible to translate relatively without doing so.

Further, even when the valve body 5 pendulums, the postures of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 do not change, and the positional relationship of the neutral valve portion 30, the movable valve plate portion 50, and the movable valve frame portion 60 is maintained integrally with each other. Can perform pendulum movements.

In the partition valve 100 of the present embodiment, when the telescopic rod (movable portion) 72 presses the movable valve frame portion 60, the position regulation of the movable valve frame portion 60 with respect to the neutral valve portion 30 is restricted to the frame guide pin 91. This is done with the tube 95.
The valve box urging portion (pressing cylinder) 70, the valve plate urging portion (holding spring) 80, and the valve frame urging portion (auxiliary spring) 90 have the above-mentioned configurations, so that the movable valve frame portion 60 is neutral. In the movement of the valve portion 30 in the flow path H direction, the pressing force in the moving direction acts on the position / direction in which the pressing force in the moving direction coincides with the moving direction.

Therefore, when the movable valve frame portion 60 is moved with respect to the neutral valve portion 30 by the valve box urging portion (pressing cylinder) 70, the posture of the movable valve frame portion 60 with respect to the neutral valve portion 30 can be very stable.

At the same time, when the movable valve frame portion 60 pressed by the telescopic rod (movable portion) 72 moves in the flow path H direction with respect to the neutral valve portion 30, the moving direction of the movable valve frame portion 60 and the telescopic rod (movable) Part) The direction of action of the pressing force from 72 coincides with that. Further, the movable valve frame portion 60 acts at a position where the pressing force from the telescopic rod (movable portion) 72 is on the same straight line with respect to the moving direction of the movable valve frame portion 60.
As a result, it is possible to prevent a moment from being generated in the movable valve frame portion 60. Therefore, it is possible to suppress the occurrence of deformation in the movable valve frame portion 60.
As a result, it is possible to improve the sealing property of the movable valve frame portion 60 and improve the operation certainty of the movable valve frame portion 60.

In the present embodiment, the valve box urging portion (pressing cylinder) 70, the valve plate urging portion (holding spring) 80, and the valve frame urging portion (auxiliary spring) 90 are provided in two sets of four each. However, other configurations may be used. Specifically, it is possible to set another number of sets according to the diameter of the partition valve 100, such as 6 sets for 3 sets or 8 sets for 4 sets.
Further, the valve box urging portion (pressing cylinder) 70, the valve frame urging portion (auxiliary spring) 90, and the valve plate urging portion (holding spring) 80 may be arranged in different numbers. Even in this case, it is preferable that the valve box urging portion (pressing cylinder) 70 and the valve frame urging portion (auxiliary spring) 90 have the same number of sets.

In this embodiment, the same effects as those in each of the above embodiments can be obtained.

Hereinafter, a fourth embodiment of the partition valve according to the present invention will be described with reference to the drawings.
In this embodiment, the difference from the first to third embodiments described above is that the release control unit of the sluice valve and the switching valve (spool valve) are related, and the other corresponding components are designated by the same reference numerals. And the explanation is omitted.

FIG. 20 is a schematic cross-sectional view along a flow path showing a partition valve in the present embodiment, and is a diagram showing a case where the valve body is arranged at a valve opening shielding position (sliding preparation position).
FIG. 21 is a plan view showing a main part of the partition valve in the present embodiment, and is a diagram showing a positional relationship between the spool valve and the rotation axis of the valve body.
FIG. 22 is a schematic explanatory view showing a hydraulic drive unit in the partition valve according to the present embodiment.
FIG. 23 is a flowchart showing a normal closing operation of the partition valve according to the present embodiment.

In the partition valve 100 of the present embodiment, the brake operation release unit 225f and the non-excitation operation brake 705b are connected to the release control unit 101.
The release control unit 101 can output a release instruction signal to the brake operation release unit 225f and the non-excitation operation brake 705b based on the information in the flow path H. A sensor for acquiring information in the flow path H may be connected to the release control unit 101.

An uninterruptible power supply (UPS) 102 is connected to the release control unit 101. The release control unit 101 can operate by being supplied with electric power from the uninterruptible power supply 102 even when the power is cut off.

In the partition valve 100 of the present embodiment, the release control unit 101 confirms the situation in the flow path H and outputs a release instruction signal.
Based on the release instruction signal output by the release control unit 101, the brake operation release unit 705f releases the regulation of the non-excitation operation brake 705b. After that, the brake operation release unit 225f releases the operation of the non-excitation operation brake 221 based on the release instruction signal output by the release control unit 101. Perform these operations in order.

At this time, the switching valve (spool valve) 800 can be made operable by releasing the operation restriction of the hydraulic motor 705 m by the brake operation release unit 705f.
The switching valve (spool valve) 800 is configured as a hydraulic damper that cushions the impact at the end of the closing rotation operation of the valve body 5.
The switching valve (spool valve) 800 is provided in the hydraulic pipe 702 of the hydraulic drive unit (incompressible fluid drive unit) 700, and the hydraulic supply can be switched.

In the partition valve 100 of the present embodiment, the rotary shaft 20 is integrally provided with a kicker 25 that rotates according to the rotation of the valve body 5. The kicker 25 is arranged at an external position of the valve box 10, that is, a position that creates an atmospheric atmosphere. As will be described later, the kicker 25 can switch the closed position detection operation to the switching valve (spool valve) 800. The kicker 25 can be regarded as a colliding object that collides.

The switching valve (spool valve) 800 is provided on the hydraulic pipe 702 and can switch the hydraulic supply by detecting that the rotation of the rotary shaft 20 is at the valve closing position and the valve opening shielding position (sliding preparation position). Is.

FIG. 23 is a flowchart showing a normal closing operation of the partition valve according to the present embodiment.

Here, when the valve body 5 in the sluice valve 100 is between the valve opening shielding position (sliding preparation position) and the retracting position (valve opening position), these are set as the valve flow state.
As an operation at the time of power interruption in the partition valve 100 of the present embodiment, first, as step S00 shown in FIG. 23, consider a case where the valve is in a distribution state.

In the operation of the partition valve 100 of the present embodiment at the time of power failure, a power failure occurs as step S01 shown in FIG. In this step S01, the power supply from the power supply 227 to the rotary drive motor 220 is stopped. At the same time, in step S01, the power supply from the power supply 707 to the hydraulic motor 705 m is stopped.
Then, as step S02 shown in FIG. 23, the non-excitation operation brake 221 and the non-excitation operation brake 705b are activated.

As a result, the operation of the non-excitation operation brake 221 regulates the operation of the rotary drive motor 220 as step S03a shown in FIG.
At the same time, the operation of the non-excitation operation brake 705b regulates the operation of the hydraulic motor 705m as step S03b shown in FIG.
As a result, the state of the valve body 5 is maintained as it is. That is, the valve body 5 is maintained at any position between the valve opening shielding position (sliding preparation position) and the retracted position (valve opening position).

These steps S03a and S03b are emergency operations and are performed at the same time as step S02.

Next, as step S20 shown in FIG. 23, the situation in the flow path H is confirmed. Here, the status confirmation in the flow path H is to confirm whether or not there is an obstacle to closing the flow path H (valve closing operation) in the partition valve 100 that has stopped urgently.

Specifically, although the rotational movement range in which the valve body 5 is moved from the retracted position (valve open position) to the valve opening shielding position (sliding preparation position) by a pendulum movement is an obstacle to the operation of the valve body 5. Check for presence.
Alternatively, when the movable valve portion (movable valve plate portion) 54 is pressed against the inner surface of the valve box 10 to close the flow path H (valve closing operation), the movable valve portion (movable valve plate portion) 54 and It is confirmed whether or not there is an obstacle to the operation of the movable valve portion (movable valve plate portion) 54 between the valve box 10 and the inner surface.

Further, when the flow path H is closed, it is confirmed whether or not there is a failure that occurs on both sides of the valve body 5, that is, upstream and downstream in the flow path H.

In the present embodiment, the status confirmation in the flow path H in step S20 can be performed by the release control unit 101 by the output of a sensor or the like provided inside the flow path H.
As the next step S21, the release control unit 101 determines whether or not the release instruction signal can be output, depending on whether or not there is an obstacle to the valve closing operation in step S21.

Next, as step S21 shown in FIG. 23, the release control unit 101 outputs a release instruction signal.
The brake operation release unit 705f operates based on the release instruction signal output by the release control unit 101.
Then, as step S22 shown in FIG. 23, the brake operation release unit 705f releases the operation of the non-excitation operation brake 705b.
As a result, the hydraulic motor 705 m can be rotated.

Then, as step S23 shown in FIG. 23, the hydraulic drive unit (incompressible fluid drive unit) 700 operates.
Specifically, in step S24, the urging force of the hydraulic urging member 720 of the hydraulic pressure generating unit 701 generates the oil pressure from the hydraulic pressure generating unit 701 toward the valve box urging unit (pressing cylinder) 70. As a result, the hydraulic pressure reaches (inflows) the switching valve (spool valve) 800 provided in the hydraulic pipe 702.

Then, as step S25 shown in FIG. 23, the switching valve (spool valve) 800 is in a state of exhibiting the impact mitigation function, as will be described later. As a result, the kicker 25 is in a state of exhibiting a function as a hydraulic damper that alleviates the impact caused by the collision operation.

Next, as step S26 shown in FIG. 23, the release control unit 101 outputs a release instruction signal. The brake operation release unit 225f is operated based on the release instruction signal output by the release control unit 101. Then, as step S27 shown in FIG. 23, the brake operation release unit 225f releases the operation of the non-excitation operation brake 221.
As a result, the rotary drive motor 220 can be rotated.

At the same time, the operation of the brake operation release unit 225f activates the power interruption urging device 230 as step S28 shown in FIG.
As a result, the power failure urging device 230 releases the spring that is wound during normal energization.

Due to the urging force of the spring, the electric power urging device 230 rotates the rotary shaft 20 toward the valve closing position even when the electric power is cut off.
Along with the rotation of the rotating shaft 20, the kicker 25 rotates as a unit.

Then, in step S29 shown in FIG. 23, the kicker 25 collides with the switching valve (spool valve) 800. At this time, the shock mitigation is performed by the function of the switching valve (spool valve) 800 as a hydraulic damper.
At the same time, as step S30 shown in FIG. 23, the valve body 5 reaches the valve opening shielding position (sliding preparation position).
Then, the hydraulic supply is switched by the switching function of the switching valve (spool valve) 800.
As a result, the hydraulic oil flows from the hydraulic pressure generating unit 701 toward the valve box urging unit (pressing cylinder) 70 by the urging force of the hydraulic urging member 720 of the hydraulic pressure generating unit 701. As a result, the movable portion (expandable rod) 72 is extended in the direction opposite to the operating direction of the hydraulic motor 705 m.

Then, as step S31 shown in FIG. 23, the movable valve portion (movable valve plate portion) 54 is pressed against the inner surface of the valve box 10 by the movable portion (expandable rod) 72, and the flow path H is closed (valve closing). motion).

As described above, the partition valve 100 of the present embodiment completes the springback operation in an emergency such as loss of power supply from the power supplies 707 and 227.
Here, step S21, step S25, step S26, and step S29 are performed in this order. As a result, the switching valve (spool valve) 800 can exhibit an impact mitigation function as a hydraulic damper and a switching function.

Hereinafter, a fifth embodiment of the partition valve according to the present invention will be described with reference to the drawings.
The present embodiment differs from the fourth embodiment described above in that it relates to a switching valve (spool valve), and the other corresponding components are designated by the same reference numerals and the description thereof will be omitted.

24 to 29 are schematic views showing the operation of the partition valve and the spool valve in this embodiment.

FIG. 24 is a diagram showing a valve open state in which the rod of the spool valve is in the second position. FIG. 25 is a diagram showing a valve closed state in which the rod of the spool valve is in the third position. FIG. 26 is a diagram showing a collision standby state in which the rod of the spool valve is in the first position.

FIG. 27 is a diagram showing a damping state in which the rod of the spool valve has started to move so as to be closer to the second position than the first position. FIG. 28 is a diagram showing a damping state in which the rod of the spool valve is further moved closer to the second position. FIG. 29 is a diagram showing the moment when the rod of the spool valve reaches the third position.

The switching valve (spool valve) 800 provides a spool flow path 801 that enables the flow of hydraulic pressure (incompressible fluid) between the hydraulic cylinder (main cylinder) 710 and the valve box urging portion (pressing cylinder) 70. Have.
The switching valve (spool valve) 800 switches between opening and closing of the spool flow path 801 when the movable valve portion (movable valve plate portion) 54 is in the valve opening shielding position (sliding preparation position) and the valve closing position. It is possible.

The spool flow path 801 is connected to a main cylinder port 702a communicating with the hydraulic cylinder (main cylinder) 710 and a pressing cylinder port 702b communicating with the valve box urging portion (pressing cylinder) 70.

The switching valve (spool valve) 800 has a rod (switching sensor) 802.
One end of the rod 802 can come into contact with the kicker 25. The kicker 25 rotates integrally with the valve body 5 according to the rotation of the rotation shaft 20.
The rod 802 can be reciprocated in the axial direction.
A damping chamber 803 is formed at a position close to the other end of the rod 802.
The damping chamber 803 is connected to the main cylinder port 702a that communicates with the hydraulic cylinder (main cylinder) 710.

The rod 802 has an urging member (spool spring) 804 that urges the rod 802 from one end to the other.
As will be described later, the urging member (spool spring) 804 is configured to release the urging of the rod 802 according to the moving distance (axial position) in the direction from one end to the other end of the rod 802. Will be done.

The rod 802 can be moved in a direction in which the volume of the damping chamber 803 is reduced by the kicker 25 that abuts or collides with the rod 802.
The rod 802 can be moved within a predetermined range in a direction in which the volume of the damping chamber 803 is reduced by the urging force of the urging member (spool spring) 804.
The rod 802 can be moved in a direction in which the volume of the damping chamber 803 is increased by the hydraulic pressure supplied from the main cylinder port 702a to the damping chamber 803.

The switching valve (spool valve) 800 is provided with a damping check valve 805 that enables communication between the damping chamber 803 and the main cylinder port 702a.
The damping check valve 805 shuts off from the damping chamber 803 toward the main cylinder port 702a, and enables communication from the main cylinder port 702a toward the damping chamber 803.

The switching valve (spool valve) 800 is provided with a check valve (spool check valve) 806 in parallel with the spool flow path 801.
The check valve (spool check valve) 806 shuts off from the main cylinder port 702a toward the pressing cylinder port 702b, and enables communication from the pressing cylinder port 702b toward the main cylinder port 702a.

The damping chamber 803 is provided with an orifice portion 807 that can communicate with the main cylinder port 702a. The orifice portion 807 is provided in parallel with the damping check valve 805.

The orifice portion 807 has a variable communication state with the main cylinder port 702a according to a moving distance (axial position) in the direction from one end to the other end of the rod 802, that is, the flow rate is variable.
A plurality of orifice portions 807 can be provided in the axial direction of the rod 802 as positions exposed to the damping chamber 803 in response to the movement of the rod 802.

As will be described later, in the switching valve (spool valve) 800, the spool flow path 801 can be opened only in a part thereof according to the moving distance (axial position) in the direction from one end to the other end of the rod 802. To.

As will be described later, the switching valve (spool valve) 800 has the orifice portion 807 with the main cylinder port 702a only in a part thereof according to the moving distance (axial position) in the direction from one end to the other end of the rod 802. Communication is possible.

Next, the operation of the switching valve (spool valve) 800 in the present embodiment will be described.

The switching valve (spool valve) 800 in the present embodiment is a three-position valve having three positions. Each of the three positions corresponds to the expansion and contraction state of the rod 802 in the axial direction.
As shown in FIG. 26, the first position is a position in which the rod 802 extends in the axial direction by the maximum distance that the kicker 25 can move toward one end that abuts or collides with.

As shown in FIGS. 25 and 29, the third position is a position in which the rod 802 is degenerated by the maximum distance that the rod 802 can move toward the other end in the axial direction.
In addition, in FIGS. 25 and 29, the rod 802 degenerated as the third position is not shown.
The second position is, as shown in FIG. 24, the position where the rod 802 is axially between the first and third positions. The second position is a position where the rod 802 is close to the third position in the axial direction.

Next, for each position of the rod 802, the operation / action performed by the rod 802 with each configuration will be described.

The spool flow path 801 is opened only when the rod 802 is in the third position, that is, the main cylinder port 702a and the pressing cylinder port 702b are in a communicating state. When the rod 802 moves closer to the second position than the third position, the spool flow path 801 is closed, that is, the main cylinder port 702a and the pressing cylinder port 702b are shut off.

Further, when the rod 802 is in any position from the second position to the first position, the spool flow path 801 is in a closed state, that is, the main cylinder port 702a and the pressing cylinder port 702b are shut off. ..
The spool flow path 801 can be opened and closed by the rod 802 moving between the third position and the first position.

The damping chamber 803 has a minimum volume when the rod 802 is located in the third position. The damping chamber 803 has a maximum volume when the rod 802 is located in the first position. Further, the volume of the damping chamber 803 changes proportionally or correspondingly according to a change in the distance at which the rod 802 is located between the third position and the first position.

The urging member (spool spring) 804 has the maximum urging force when the rod 802 is positioned in the first position. The urging member (spool spring) 804 urges the rod 802 between the first position and the second position in the direction in which the rod 802 retracts.

The urging member (spool spring) 804 is set so that the urging force is not applied to the rod 802 when the rod 802 is positioned in the second position. The urging member (spool spring) 804 is set so that the rod 802 does not apply an urging force to the rod 802 between the second position and the third position.

The damping check valve 805 exerts a rectifying action regardless of each position of the rod 802.
The check valve (spool check valve) 806 exerts a rectifying action regardless of each position of the rod 802.

The orifice portion 807 relaxes the oil flow out of the damping chamber 803 when the rod 802 is located between the first position and the second position. In particular, the orifice portion 807 is set so that when the rod 802 moves from the first position to the second position, the degree of relaxation of the oil flow out of the damping chamber 803 is increased.
Further, when the rod 802 is located between the second position and the third position, the orifice portion 807 blocks the flood pressure flowing out from the damping chamber 803 through the orifice portion 807.

The kicker 25 can abut or collide with the end of the rod 802 when the rod 802 is located between the first and second positions.
The kicker 25 can press the end of the rod 802 as the rod 802 moves from the first position to the second position.

The kicker 25 can press the end of the rod 802 as the rod 802 moves from the second position to the third position. The movement of the rod 802 from the second position to the third position is due to the pressing of the kicker 25.
The kicker 25 can come into contact with the end of the rod 802 as the rod 802 moves from the third position to the second position. The movement of the rod 802 from the third position to the second position is started when the pressure from the kicker 25 is released.
Since the kicker 25 rotates integrally with the rotating shaft 20, the valve body 5, and the valve frame portion 63, the kicker 25 is not shown in FIGS. 24 to 29.

In the partition valve 100 of the present embodiment, the hydraulic motor 705 m of the drive unit 705 of the cylinder drive unit 730 is energized (power supply) so that the normal valve opening / closing operation can be controlled, and the cylinder drive unit 730 is in a state of being able to control the normal valve opening / closing operation due to a power failure or the like. The operation is different depending on whether the drive unit 705 is in a non-power supply state for the hydraulic motor 705 m.

In either power supply state or no power supply state, the spool flow path 801 of the switching valve (spool valve) 800 is only when the movable valve portion (movable valve plate portion) 54 is in the valve opening shielding position and the valve closing position. It can be opened.

First, in the normal power supply state, the switching valve (spool valve) 800 operates between the second position and the third position.

Specifically, the rod 802 is located in the second position of the switching valve (spool valve) 800 in which the hydraulic motor 705 m of the drive unit 705 is energized and the valve is open.
That is, the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position), and the flow path H is fully opened so that distribution is possible.
In this state, as shown in FIG. 24, the rod 802 is located in the second position.

Further, while the movable valve portion (movable valve plate portion) 54 is closed and rotated from the retracted position (valve open position) to the valve opening shielding position (sliding preparation position), the flow path H is partially movable. It is covered by a valve portion (movable valve plate portion) 54, and a part of the flow path H can flow.
In this state, the rod 802 is located in the second position.

Further, immediately after the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position), the flow path H is shielded by the movable valve portion (movable valve plate portion) 54. , It is not hermetically sealed, and a part of the flow path H can be distributed near the peripheral edge of the movable valve portion (movable valve plate portion) 54.
In this state, the rod 802 has just moved from the second position to the third position.

Further, by driving the valve box urging portion (pressing cylinder) 70, the movable valve portion (movable valve plate portion) 54 performs a sealing operation to change the position in the flow path H direction, and the movable valve portion (movable valve plate portion). The 54 slides from the valve opening shielding position (sliding preparation position) to the valve closing position, and the flow path H is closed.
In this state, as shown in FIG. 25, the rod 802 is located in the third position.

Next, the movable valve portion (movable valve plate portion) 54 opens to change the position in the flow path H direction, and the movable valve portion (movable valve plate portion) 54 moves from the valve closing position to the valve opening shielding position ( Slide to the sliding preparation position). At this time, the flow path H is partially covered with the movable valve portion (movable valve plate portion) 54, and the flow path H can be partially circulated.
In this state, the rod 802 is located in the third position.

Further, immediately after the movable valve portion (movable valve plate portion) 54 starts the closing rotation operation from the valve opening shielding position (sliding preparation position), the sealing of the flow path H is released and the flow path H becomes the movable valve. A part of the portion (movable valve plate portion) 54 can be distributed near the peripheral edge portion. At the same time, the flow path H is shielded by the movable valve portion (movable valve plate portion) 54, but is not sealed.
In this state, the rod 802 moves from the third position to the second position.

Further, while the movable valve portion (movable valve plate portion) 54 opens and rotates from the valve opening shielding position (sliding preparation position) to the retracted position (valve opening position), the flow path H is partially a movable valve. It is covered by a portion (movable valve plate portion) 54, and a part of the flow path H can flow.
In this state, as shown in FIG. 24, the rod 802 is located in the second position.

Next, in a non-power supply state such as when an emergency such as a power failure occurs, the switching valve (spool valve) 800 moves from the second position to the first position, from the first position to the third position, and further to the second position. Operates between and the third position.

The partition valve 100 in the present embodiment is configured to be normally closed.
Therefore, when the sluice valve 100 is in the valve closed state and the hydraulic motor 705 m of the drive unit 705 is energized, a power failure or the like occurs and the power is not supplied. ) 800, as shown in FIG. 25, the rod 802 is located in the third position. At this time, the rod 802 does not move from the third position.

On the other hand, if the sluice valve 100 is in the open state and the hydraulic motor 705 m of the drive unit 705 is energized, a power failure or the like occurs and the power is not supplied. From the viewpoint of property, the switching valve (spool valve) 800 operates so that it can be normally closed.

Specifically, first, the rod 802 of the switching valve (spool valve) 800 in the state where the hydraulic motor 705 m of the drive unit 705 is energized and the valve is open is located at the second position.
That is, when the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position) and the flow path H is fully opened and can be distributed, the rod 802 is located in the second position.

Next, for example, when a power failure occurs and the power supply to the hydraulic motor 705 m of the drive unit 705 disappears, at that moment, the rod 802 is in the valve open state and in the switching valve (spool valve) 800. It maintains the state of being located in the second position.

That is, when the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position) and the flow path H is fully opened and can be distributed, the rod 802 is in the second position as shown in FIG. Located in.

Immediately after the power failure occurs and the power supply to the hydraulic motor 705 m of the drive unit 705 disappears, the movable valve portion (movable valve plate portion) 54 is released from the retracted position (valve open position) in the valve open state. The closed rotation operation is performed to the valve opening shielding position (sliding preparation position). At that time, at the end of the closed rotation operation, when the kicker 25 interlocked with the valve body 5 collides, the rod 802 of the switching valve (spool valve) 800 is second in order to enable the impact mitigation function as a hydraulic damper. Extend from position to first position.

That is, as shown in FIG. 26, the rod 802 extends to the first position and collides with the kicker 25 before the movable valve portion (movable valve plate portion) 54 closes and rotates from the retracted position (valve open position). It will be in the standby state.
In the switching valve (spool valve) 800, when the rod 802 is in the first position, the shock mitigation state starts.

At the time of impact mitigation, the kicker 25 is the first in the movable valve portion (movable valve plate portion) 54 that performs a closed rotation operation from the retracted position (valve open position) to the valve opening shielding position (sliding preparation position) at the end of the closed rotation operation. It abuts on one end of the rod 802 located at the position and moves from the first position to the second position.

That is, as shown in FIGS. 27 and 28, the rod 802 moves from the first position to the second position while the movable valve portion (movable valve plate portion) 54 operates in a closed rotation from the retracted position (valve open position). Moving. During this time, the orifice portion 807 can communicate with the main cylinder port 702a from the damping chamber 803, and the flow rate is variable.

The flow rate of the orifice portion 807 from the damping chamber 803 to the main cylinder port 702a is set to decrease as the rod 802 moves from the first position to the second position.

In the switching valve (spool valve) 800, when the rod 802 that has moved from the first position reaches the second position, the impact mitigation state ends.
At the end of impact mitigation, at the end of the closed rotation operation of the movable valve portion (movable valve plate portion) 54, the kicker 25 presses one end of the rod 802 that has reached the second position, and the rod 802 moves from the second position to the third position. Move to position.

That is, as shown in FIG. 29, at the moment when the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position), the rod 802 reaches the third position at the same time.
At the moment when the rod 802 reaches the third position, the blocked spool flow path 801 is opened at the same time.

Therefore, the spool flow path 801 is opened after the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position). When the spool flow path 801 is opened, the main cylinder port 702a and the pressing cylinder port 702b communicate with each other.

As a result, the valve box urging portion (pressing cylinder) 70 and the hydraulic cylinder (main cylinder) 710 communicate with each other. Then, the oil pressure (incompressible fluid) is supplied from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70. As a result, the valve box urging portion (pressing cylinder) 70 operates, the movable valve portion (movable valve plate portion) 54 moves from the valve opening shielding position (sliding preparation position) to the valve closing position, and the valve closes. The operation ends.

Next, the operation including the impact mitigation action of the switching valve (spool valve) 800 in the present embodiment will be described.

First, as a starting state, a valve open state in which the hydraulic motor 705 m of the drive unit 705 is energized will be described.

In this state, as shown in FIG. 24, the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position).
In the switching valve (spool valve) 800, the rod 802 is located at the second position. The spool flow path 801 is blocked. The main cylinder port 702a and the pressing cylinder port 702b are cut off.

The urging member (spool spring) 804 does not urge the rod 802.
The volume of the damping chamber 803 has been reduced, and the damping chamber 803 does not communicate with the orifice portion 807.

The tip of the movable portion 72 of the valve box urging portion (pressing cylinder) 70 is retracted by the urging member (pressing spring) 73.
In the hydraulic cylinder (main cylinder) 710, the cylinder volume is increased by the hydraulic motor 705 m of the drive unit 705 against the urging force of the hydraulic urging member (main spring) 720.
A check valve (spool check valve) 806 enables communication from the valve box urging portion (pressing cylinder) 70 to the hydraulic cylinder (main cylinder) 710.

Therefore, the valve box urging portion (pressing cylinder) 70 urged by the urging member (pressing spring) 73 is higher than the hydraulic cylinder (main cylinder) 710 and is set by the check valve (spool check valve) 806. The specified differential pressure is occurring.
The inside of the damping chamber 803 is set to the same pressure as the hydraulic cylinder (main cylinder) 710 by the damping check valve 805.

Next, for example, a case where a power failure occurs and the power supply to the hydraulic motor 705 m of the drive unit 705 disappears will be described.

In this state, initially, as step S00 shown in FIG. 23, the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position).
After a power failure occurs in step S01 shown in FIG. 23, the operation of the rotary drive motor 220 is regulated and the operation of the hydraulic motor 705 m is deregulated in steps S02 to S21 shown in FIG.
Next, as step S23 shown in FIG. 23, the cylinder volume of the hydraulic cylinder (main cylinder) 710 begins to decrease due to the urging force of the hydraulic urging member (main spring) 720. As a result, in step S24 shown in FIG. 23, the pressure of the hydraulic cylinder (main cylinder) 710 is increased by the urging force of the hydraulic urging member (main spring) 720.

Since the inside of the damping chamber 803 is in the same pressure as the hydraulic cylinder (main cylinder) 710 due to the damping check valve 805, the pressure in the damping chamber 803 rises.
When the pressure of the damping chamber 803 rises, the rod 802 is pressed and moves, and the volume of the damping chamber 803 expands against the urging force of the urging member (spool spring) 804. Along with this, the rod 802 extends from the second position shown in FIG. 24 to the first position shown in FIG. 26.

In the switching valve (spool valve) 800, the rod 802 is located in the first position.
As a result, in step S25 shown in FIG. 23, the rod 802 extended to the first position is in a standby state waiting for the kicker 25 to collide.
The spool flow path 801 maintains a closed state. The main cylinder port 702a and the pressing cylinder port 702b are cut off.

The urging member (spool spring) 804 urges the rod 802.
The volume of the damping chamber 803 has been expanded, and the damping chamber 803 communicates with the orifice portion 807.

The check valve (spool check valve) 806 shuts off the pressure from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70.

As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

In this state, in steps S26 to S28 shown in FIG. 23, the operation of the rotary drive motor 220 is released from regulation, and the rotary shaft 20 is rotated by the power interruption urging device 230.
As a result, the movable valve portion (movable valve plate portion) 54 starts the closing rotation operation from the retracted position (valve opening position) to the valve opening shielding position (sliding preparation position).

In this state, the rotation operation of the rotation shaft 20 is not controlled by the rotation shaft drive unit 200. Therefore, the closing rotation operation is performed extremely rapidly from the retracted position (valve opening position) of the movable valve portion (movable valve plate portion) 54 to the valve opening shielding position (sliding preparation position).

In step S29 shown in FIG. 23, this closing rotation operation causes the kicker 25 to abut or collide with the end of the rod 802 located in the first position, as shown in FIG. 27. Subsequently, the kicker 25 moves the rod 802 from the first position to the second position by pressing the end portion of the rod 802.

In this state, the volume of the damping chamber 803 tends to be momentarily reduced by the operation of the rod 802 collided with the kicker 25. At this time, the damping chamber 803 momentarily becomes high pressure. Here, the rising pressure of the damping chamber 803 is relaxed by the orifice portion 807 communicating with the damping chamber 803.

At this time, high pressure is released from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710 via the orifice portion 807.
In the hydraulic cylinder (main cylinder) 710, the pressure fluctuation is absorbed by the deformation of the hydraulic urging member (main spring) 720.

The rising pressure of the damping chamber 803, which has become momentarily high, is shut off toward the main cylinder port 702a by the damping check valve 805. This prevents the transmission of a high-pressure impact to the main cylinder port 702a and the portion communicating with the main cylinder port 702a.

The spool flow path 801 maintains a closed state. The main cylinder port 702a and the pressing cylinder port 702b are cut off. The urging member (spool spring) 804 urges the rod 802.
The check valve (spool check valve) 806 shuts off the pressure from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70.

As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

Further, by the closed rotation operation, the movable valve portion (movable valve plate portion) 54 continues to rotate from the retracted position (valve open position) to the valve opening shielding position (sliding preparation position), and the movable valve portion (movable valve). The plate portion) 54 is close to the valve opening shielding position (sliding preparation position).

In this state, the kicker 25 presses the rod 802 in contact with the end portion to move the rod 802 toward the second position, and as shown in FIG. 28, the rod 802 is moved to the second position. Close to each other.

Here, the volume of the damping chamber 803 tends to be continuously reduced by the operation of the rod 802 pressed by the kicker 25. At this time, the damping chamber 803 maintains a high pressure state although it gradually decreases. Here, the pressure in the damping chamber 803 is continuously relieved by the orifice portion 807 communicating with the damping chamber 803.

At this time, high pressure is released from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710 via the orifice portion 807.
In the hydraulic cylinder (main cylinder) 710, the pressure fluctuation is absorbed by the deformation of the hydraulic urging member (main spring) 720.

The pressure in the damping chamber 803, which has become high pressure, is shut off toward the main cylinder port 702a by the damping check valve 805. This prevents the high pressure from being transmitted to the main cylinder port 702a and the portion communicating with the main cylinder port 702a.

The spool flow path 801 maintains a closed state. The main cylinder port 702a and the pressing cylinder port 702b are cut off. The urging member (spool spring) 804 urges the rod 802.

The check valve (spool check valve) 806 shuts off the pressure from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70.
As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

Further, by the closed rotation operation, the kicker 25 presses the rod 802 in contact with the end portion of the rod 802, so that the rod 802 reaches the second position.

In this state, the orifice portion 807 is closed by the movement of the rod 802, and the damping chamber 803 is shut off from the hydraulic cylinder (main cylinder) 710.
This completes pressure relaxation. At this time, the pressure fluctuation is absorbed by the deformation of the hydraulic urging member (main spring) 720 in the hydraulic cylinder (main cylinder) 710, and the pressure in the damping chamber 803 is sufficiently lowered.

The spool flow path 801 maintains a closed state. The main cylinder port 702a and the pressing cylinder port 702b are cut off. The urging member (spool spring) 804 releases the urging of the rod 802.

The check valve (spool check valve) 806 shuts off the hydraulic cylinder (main cylinder) 710 toward the valve box urging portion (pressing cylinder) 70.
As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

Further, as shown in FIG. 29, the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position) by the closed rotation operation.

In this state, the kicker 25 presses the rod 802 in contact with the end portion of the rod 802, so that the rod 802 passes through the second position and reaches the third position.
Here, the rod 802 reaches the third position at the same time when the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position).
When the rod 802 reaches the third position, the spool flow path 801 is in the communicating state for the first time due to the movement of the rod 802.

The main cylinder port 702a and the pressing cylinder port 702b are communicated with each other. The urging member (spool spring) 804 does not urge the rod 802.
The direction from the hydraulic cylinder (main cylinder) 710 toward the valve box urging portion (pressing cylinder) 70 is blocked by a check valve (spool check valve) 806, but is communicated by a spool flow path 801.

As a result, the pressure of the valve box urging portion (pressing cylinder) 70 rises.
Therefore, the valve box urging portion (pressing cylinder) 70 is in a state in which the tip portion of the movable portion 72 is extended by overcoming the urging force of the urging member (pressing spring) 73.

At this time, the movable valve portion (movable valve plate portion) 54 is pressed by the tip end portion of the movable portion 72 to perform a sealing operation for changing the position in the flow path H direction. As a result, as step S31 shown in FIG. 23, the movable valve portion (movable valve plate portion) 54 slides from the valve opening shielding position (sliding preparation position) to the valve closing position, and the flow path H is closed. Will be done.

As a result, the valve closing operation as a normal close in an emergency such as a power failure is completed.

In the present embodiment, the partition valve 100 has a release control unit 101, a brake operation release unit 705f, a brake operation release unit 225f, an incompressible operation brake 705b, an incompressible operation brake 221 and a switching valve (spool valve) 800. Therefore, it is possible to realize a normal close that simultaneously exhibits incompressible fluid supply switching and impact mitigation.

The rod 802 is made movable between the second position and the third position by the pressing state of the kicker 25 against the rod 802.
As a result, the spool flow path 801 is in a communicative state unless the rod 802 pressed by the kicker 25 is in the third position regardless of whether the power supply is not supplied such as a power failure or the normal power supply controllable state. Never.

That is, when the valve body 5 is located at a position other than the valve opening shielding position (sliding preparation position) and the valve closing position, the rod 802 is located between the first position and the second position. At this time, the spool flow path 801 is blocked, and the movable valve portion (movable valve plate portion) 54 does not close.

Therefore, unless the rod 802 pressed by the kicker 25 is in the third position, the oil pressure (incompressible fluid) is not supplied from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70.
That is, unless the rod 802 pressed by the kicker 25 is in the third position, the valve box urging portion (pressing cylinder) 70 does not close the movable valve portion (movable valve plate portion) 54.

As a result, the valve box urging portion (pressing cylinder) 70 urges the movable valve portion (movable valve plate portion) 54 when the valve body 5 is outside the valve opening shielding position (sliding preparation position) and the valve closing position. There is nothing to do.

Regardless of whether the sluice valve 100 is in the normal power supply state or the non-power supply state, the switching valve (spool valve) is used only when the valve body 5 is in the valve opening shielding position (sliding preparation position) and the valve closing position. The 800 can supply the hydraulic pressure (incompressible fluid) to the valve box urging portion (pressing cylinder) 70.

As a result, the interlock function that regulates the normal closing operation of the springback with respect to the movable valve portion (movable valve plate portion) 54 is maintained regardless of the non-power supply state such as a power failure or the normal power supply controllable state. It is possible to do.
As a result, it is possible to prevent the sluice valve 100 from being in a valve closed state due to an improper closing operation. Further, it is possible to prevent the partition valve 100 from being damaged or malfunctioning due to an improper closing operation.

Further, in the switching valve (spool valve) 800 of the sluice valve 100 in the present embodiment, when the rod 802 is located between the first position and the second position, a damping chamber formed at the other end of the rod 802 is formed. Impact mitigation is possible by 803.
As a result, three positions in the switching valve (spool valve) 800 are realized, and as the first position of the rod 802, the standby state corresponding to the collision of the valve body 5 is set.
Further, it exhibits a damping function between the first position and the second position of the rod 802, and alleviates the impact caused by the collision of the kicker 25 with the rod 802.

Further, in the present embodiment, when the valve body 5 is in the valve opening shielding position (sliding preparation position), as the third position of the rod 802, the spool flow path 801 is communicated with the hydraulic cylinder (main cylinder) 710. It enables the supply of hydraulic pressure (incompressible fluid) to the valve box urging portion (pressing cylinder) 70. As a result, the valve box urging portion (pressing cylinder) 70 is driven, and the movable valve portion (movable valve plate portion) 54 is moved to the valve closing position.
In the switching valve (spool valve) 800, these functions can be switched at the position of the rod 802.

Further, the damping check valve 805 makes it possible to supply the oil pressure (incompressible fluid) stored in the hydraulic cylinder (main cylinder) 710 to the damping chamber 803 when there is no power supply such as a power failure. At the same time, even if the kicker 25 collides with the rod 802 after the rod 802 extends to the first position in the standby state waiting for the collision of the valve body 5, the damping chamber 803 is blocked from the damping chamber 803 toward the main cylinder port 702a. ..

Therefore, the high pressure state generated in the damping chamber 803 due to the collision of the kicker 25 is not transmitted to the main cylinder port 702a. As a result, it is possible to exhibit the damping function without damaging the partition valve 100 due to the high pressure generated in the damping chamber 803 expanded in the first position.

When the kicker 25 collides with the rod 802 after the rod 802 is extended to the first position in the standby state by the orifice portion 807, the hydraulic pressure (incompressible fluid) stored in the damping chamber 803 is applied to the orifice portion 807. The fluid moves to the hydraulic cylinder (main cylinder) 710 in a state where the flow rate is suppressed. Therefore, the degeneracy of the rod 802 due to the collision of the kicker 25 is performed in a slowly relaxed state.

Therefore, the high-pressure state generated by the collision between the kicker 25 and the rod 802 gently descends. As a result, the impact generated by the collision between the kicker 25 and the rod 802 is absorbed.

At this time, the spool flow path 801 is blocked. Further, the damping check valve 805 from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710 is in the closing direction. Therefore, the high pressure state generated by the collision between the kicker 25 and the rod 802 is not directly transmitted to the hydraulic cylinder (main cylinder) 710 and the valve box urging portion (pressing cylinder) 70.

Further, when the rod 802 is degenerated to the second position, the orifice portion 807 is closed by the rod 802. Therefore, the damping chamber 803 does not maintain the damping ability, that is, the shock absorbing function. Therefore, the damping ability is exhibited while the rod 802 moves from the first position to the second position.

When the valve box urging part (pressing cylinder) 70 is in a higher pressure state than the hydraulic cylinder (main cylinder) 710, the check valve (spool check valve) 806 is used to urge the valve box (pressing cylinder). ) 70 can communicate with the hydraulic cylinder (main cylinder) 710.
This is because the check valve (spool check valve) 806 becomes a parallel flow path regardless of the open / closed state of the spool flow path 801 so that the valve box urging portion (pressing cylinder) 70 and the hydraulic cylinder (main cylinder) ) This is because it is possible to communicate with 710.

At the same time, when the hydraulic cylinder (main cylinder) 710 is in a higher pressure state than the valve box urging portion (pressing cylinder) 70, the check valve (spool check valve) 806 is placed in the valve box urging portion (pressing cylinder). The cylinder) 70 is closed toward the hydraulic cylinder (main cylinder) 710. That is, the check valve (spool check valve) 806 can communicate depending on the open / closed state of the spool flow path 801.

Therefore, the pressure state of the valve box urging portion (pressing cylinder) 70 can be controlled depending on the open / closed state of the spool flow path 801 set by the position of the rod 802. That is, only when the spool flow path 801 is open, a negative pressure (incompressible fluid) is supplied to the valve box urging portion (pressing cylinder) 70, and the valve box urging portion (pressing cylinder) 70 closes. Do it.

Hereinafter, a sixth embodiment of the sluice valve and spool valve according to the present invention will be described with reference to the drawings.
30 to 35 are cross-sectional views showing a switching valve (spool valve) in this embodiment.

In the present embodiment, the difference from the fifth embodiment described above is that the specific structure of the spool valve is related, and the same reference numerals are given to the other corresponding configurations, and the description thereof will be omitted.

FIG. 30 is a diagram showing a valve open state in which the rod of the spool valve is in the second position, corresponding to FIG. 24. FIG. 31 is a diagram showing a valve closed state in which the rod of the spool valve is in the third position, corresponding to FIG. 25. FIG. 32 is a diagram corresponding to FIG. 26 and showing a collision standby state in which the rod of the spool valve is in the first position.

FIG. 33 is a diagram showing a damping state in which the rod of the spool valve has started to move from the first position toward the second position, corresponding to FIG. 27. FIG. 34 is a diagram showing a damping state in which the rod of the spool valve is further moved closer to the second position according to FIG. 28. FIG. 35 is a diagram corresponding to FIG. 29 and showing the moment when the rod of the spool valve reaches the third position.

As shown in FIGS. 30 to 35, the switching valve (spool valve) 800 in the present embodiment includes a rod 802, an inner spool 811, an outer spool 812, a casing 810, a C ring (stopper) 814, and the like. It has a force member (spool spring) 804 and.

The rod 802 has a rod shape that can be expanded and contracted in the axial direction.
The inner spool 811 has a cylindrical shape that can be reciprocated along the rod 802.
The outer spool 812 has a cylindrical shape that can be reciprocated along the rod 802.
The casing 810 houses the rod 802, the inner spool 811, and the outer spool 812.
The C ring (stopper) 814 is provided around the rod 802 so as to be in contact with the inner spool 811 and the outer spool 812.
The urging member (spool spring) 804 urges the inner spool 811 in the axial direction of the rod 802.

The rod 802 has a circular cross section and is arranged at the center of the casing 810.
The casing 810 has a substantially cylindrical cylindrical portion 810a. Both ends of the cylindrical portion 810a in the axial direction are closed by lid portions 810b and 810c.
The rod 802 is arranged coaxially with the cylindrical portion 810a.

In the casing 810, the lid portion 810b located at one end of the cylindrical portion 810a is provided with a through hole 816 at the center position thereof. The tip 802a of one end of the rod 802 penetrates through the through hole 816. The tip 802a of the rod 802 can protrude from the through hole 816 to the outside of the casing 810.

The lid portion 810b, which is the outer surface of the casing 810, has a flat surface 810b1 whose peripheral edge portion of the through hole 816 is substantially orthogonal to the axis of the cylindrical portion 810a. One end of the cylindrical portion 810a is also formed flush with the plane 810b1.
The plane 810b1 is a terminal position restricting portion that regulates the end position of the closed rotation operation in the closed rotation operation of the rotating shaft 20 when the kicker 25 comes into contact with it.

Seal members 816a and 816b are provided in the through hole 816 so that one end of the rod 802 can be slidable. Further, a stopper 816c is provided at a position inside the casing 810 in the through hole 816 to regulate the rod 802 from coming out of the through hole 816.
One end of the urging member (spool spring) 804 is in contact with the position of the stopper 816c facing the lid 810c.
The urging member (spool spring) 804 is arranged so as to spirally orbit around the outer periphery of the rod 802, which is located close to the lid portion 810c.

The other end of the rod 802 is located at one end of the damping chamber 803. A flange portion 802b is provided around the other end of the rod 802. The flange portion 802b is provided so as to be outward in the radial direction of the rod 802. The radial outer surface of the flange portion 802b is slidably in contact with the inner peripheral surface of the cylindrical portion 810a on the entire circumference.
The lid portion 810c at the other end of the cylindrical portion 810a closes the other end of the casing 810.
The inner peripheral surface of the cylindrical portion 810a, the lid portion 810c, and the end surface 802b1 of the flange portion 802b of the rod 802 form a sealed damping chamber 803.

At the center of the lid portion 810c, a guide rod (axial direction regulating portion) 810d coaxial with the rod 802 and the cylindrical portion 810a protrudes inside the cylindrical portion 810a.
The guide rod (axial direction regulating portion) 810d is in a state of being inserted into the regulating hole 802d provided at the other end of the rod 802. The axial regulation portion 810d and the regulation hole 802d of the rod 802 are slidable with each other.
A seal member 810e is provided between the guide rod (axial direction regulating portion) 810d and the regulating hole 802d of the rod 802. A sealing member 810f is provided between the radial outside of the flange portion 802b of the rod 802 and the inner surface of the cylindrical portion 810a.

A through hole 810d1 is formed in the axial direction at the center of the guide rod (axial direction regulating portion) 810d.
The through hole 810d1 communicates with the outside the rod internal space 803c located inside the regulation hole 802d of the rod 802. The rod internal space 803c of the regulation hole 802d of the rod 802 is maintained in the same atmospheric pressure atmosphere as the outside by the through hole 810d1.

The diameter dimension φ810 of the guide rod (axial direction regulating portion) 810d and the diameter dimension φ802a at the tip end 802a of the rod satisfy the following conditions.
-In order to realize the state of the second position, the rod 802 is urged to the right within a range weaker than the urging force of the urging member (spool spring) 804. The force for this is carried by the hydraulic force due to the area difference defined by the diameter dimension φ802a of the rod tip 802a and the diameter dimension φ810 of the guide rod (axial direction regulating portion) 810d.

When the pressure from the hydraulic cylinder (main cylinder) 710 is introduced in order to realize the state of the first position, the rod 802 is pushed to the tip 802a with a force stronger than the urging force of the urging member (spool spring) 804. Elevate in the direction toward. The force for this is carried by the hydraulic force due to the area difference defined by the diameter dimension φ802a of the rod tip 802a and the diameter dimension φ810 of the guide rod (axial direction regulating portion) 810d.

The force acting on the surface of each component located inside the casing 810, which is a pressure vessel, is set as follows.
That is, the force of the area difference (area difference × inside) defined by the diameter dimension φ802a of the rod tip 802a, which is the area exposed to the outside of the casing 810, and the diameter dimension φ810 of the guide rod (axial direction regulating portion) 810d. Pressure) is set to act on the movable assembly inside the casing 810.

A C ring (stopper) 814 is provided around the outer circumference of the rod 802. The C ring (stopper) 814 is fixed to the outer circumference of the rod 802. The C ring (stopper) 814 is integrated with the rod 802 and does not move with respect to the rod 802.

An inner spool 811 in a coaxial state is arranged on the outer circumference of the rod 802.
The inner spool 811 has a substantially cylindrical cylindrical portion 811a, a flange portion 811b that protrudes inward in the radial direction at an end close to the lid portion 810c of the cylindrical portion 811a, and an end portion close to the lid portion 810b of the cylindrical portion 811a. It has a flange portion 811c that protrudes outward in the radial direction.

The cylindrical portion 811a is arranged coaxially with the rod 802. The inner peripheral surface of the cylindrical portion 811a is separated from the outer peripheral surface of the rod 802.
The diameter dimension of the inner peripheral surface of the cylindrical portion 811a is set to be larger than the diameter dimension of the outer peripheral surface of the rod 802.

An urging member (spool spring) 804 is arranged between the inner peripheral surface of the cylindrical portion 811a and the outer peripheral surface of the rod 802.
The cylindrical portion 811a is arranged at the outer peripheral position of the spiral urging member (spool spring) 804.

The inner peripheral surface of the flange portion 811b is in contact with the outer peripheral surface of the rod 802. The inner peripheral surface of the flange portion 811b is slidable in the axial direction with respect to the rod 802.
The other end of the urging member (spool spring) 804 is in contact with the surface 811b2 of the flange portion 811b facing the lid portion 810b.

The flange portion 811b can be urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
The end surface 811b1 of the flange portion 811b facing the lid portion 810c is made in contact with a position facing the lid portion 810b of the C ring (stopper) 814 provided around the rod 802.

The outer peripheral surface of the flange portion 811c is slidably in contact with the inner peripheral surface of the cylindrical portion 810a of the casing 810 on the entire circumference.
The cylindrical portion 810a of the casing 810 is formed with a stepped surface 810a2 so that the diameter dimension of the position close to the lid portion 810c is smaller than that of the position close to the lid portion 810b.
The surface 811c1 of the flange portion 811c facing the lid portion 810c is made in contact with the stepped surface 810a2.
A casing space 803b surrounded by the lid portion 810b and the cylindrical portion 810a of the casing 810 is formed at a position closer to the lid portion 810b than the flange portion 811c.
An urging member (spool spring) 804 is arranged inside the casing space 803b. The casing space 803b communicates with the main cylinder port 702a.

An outer spool 812 that is in a coaxial state is arranged on the outer circumference of the rod 802.
The outer spool 812 has a substantially cylindrical cylindrical portion 812a and a flange portion 812b that projects radially inward at an end portion of the cylindrical portion 811a that is close to the lid portion 810c.

The cylindrical portion 812a is arranged coaxially with the rod 802. The inner peripheral surface of the cylindrical portion 812a is in contact with the outer peripheral surface of the cylindrical portion 811a of the inner spool 811.
The inner peripheral surface of the cylindrical portion 812a is slidable with the outer peripheral surface of the cylindrical portion 811a of the inner spool 811.

The inner peripheral surface of the flange portion 812b is in contact with the outer peripheral surface of the rod 802. The inner peripheral surface of the flange portion 812b is slidable in the axial direction with respect to the rod 802.
The surface 812b2 of the flange portion 812b facing the lid portion 810b is made in contact with a position facing the lid portion 810c of the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b facing the lid portion 810c is made contactable with the end surface 802b1 of the flange portion 802b of the rod 802.

The end surface 812a2 of the outer spool 812 cylindrical portion 812a facing the lid portion 810b, the surface 811c1 of the flange portion 811c of the inner spool 811 facing the lid portion 810c, the outer peripheral surface of the cylindrical portion 811a of the inner spool 811, and the casing 810. The space surrounded by the inner peripheral surface of the cylindrical portion 810a of the above forms the spool flow path 801.

Alternatively, an end surface 812a2 of the cylindrical portion 812a of the outer spool 812 facing the lid portion 810b, a surface 811c1 of the flange portion 811c of the inner spool 811 facing the lid portion 810c, and an outer peripheral surface of the cylindrical portion 811a of the inner spool 811. The space surrounded by the inner peripheral surface of the cylindrical portion 810a of the casing 810 and the stepped surface 810a2 forms the spool flow path 801.

A main cylinder port opening 801a communicating with the main cylinder port 702a is formed in the cylindrical portion 810a of the casing 810 at a position capable of communicating with the spool flow path 801 in the radial direction.
The main cylinder port opening 801a can be closed by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.

The cylindrical portion 810a of the casing 810 is formed with a pressing cylinder port opening 801b communicating with the pressing cylinder port 702b at a position capable of communicating with the spool flow path 801 in the radial direction.
The pressing cylinder port opening 801b can be closed by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.

The main cylinder port opening 801a is located closer to the lid portion 810b in the axial position of the rod 802 than the pressing cylinder port opening 801b.
That is, the pressing cylinder port opening 801b is closer to the lid portion 810c in the axial position of the rod 802 than the main cylinder port opening 801a.

Therefore, it is possible that only the pressing cylinder port opening 801b is closed by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812, corresponding to the axial position of the rod 802.
Further, it is possible that the main cylinder port opening 801a and the pressing cylinder port opening 801b are closed by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812, corresponding to the axial position of the rod 802.

Further, it is possible that the main cylinder port opening 801a and the pressing cylinder port opening 801b are in communication with each other corresponding to the axial position of the rod 802.
The closed / communicative state between the main cylinder port opening 801a and the pressing cylinder port opening 801b corresponds to the axial positions of the rod 802 and the outer spool 812.

A damping check valve 805 communicating with the main cylinder port 702a is connected to the cylindrical portion 810a of the casing 810 to a flow path formed in the radial direction as a position communicating with the damping chamber 803.

A plurality of orifice portions 807 are formed in the cylindrical portion 810a of the casing 810 at positions capable of communicating with the damping chamber 803 in the radial direction.
The orifice portion 807 is set at an opening position in the cylindrical portion 810a so that the number of flow paths communicating with the damping chamber 803 can be increased or decreased according to the moving position of the rod 802 in the axial direction.

As the orifice portion 807, for example, the orifice opening 807a, the orifice opening 807b, and the orifice opening 807c are arranged in order from the lid portion 810b to the lid portion 810c at the axial position of the rod 802.
The orifice opening 807a, the orifice opening 807b, and the orifice opening 807c are communicated with each other by an orifice flow path 807d arranged at a position close to the outer periphery of the cylindrical portion 810a.

The end surface 802b1 of the flange portion 802b of the rod 802 is provided with a notch portion 802b3 at its outer peripheral position so as to be in contact with the inner peripheral surface of the cylindrical portion 810a or the like.
The notch 802b3 can change the state of communication between the orifice opening 807a, the orifice opening 807b, the orifice opening 807c, and the damping chamber 803 according to the axial position of the rod 802.

Further, the casing 810 may be provided with a flow path communicating with the main cylinder port 702a so as to send excess oil (incompressible fluid) to the hydraulic cylinder (main cylinder) 710.

Next, the operation of the switching valve (spool valve) 800 in the present embodiment will be described.

The switching valve (spool valve) 800 in the present embodiment is a three-position valve having three positions as in the fifth embodiment. Each of the three positions corresponds to the expansion and contraction state of the rod 802 in the axial direction.

The inner surface of the regulation hole 802d of the rod 802 slides with respect to the guide rod (axial regulation portion) 810d. At this time, the rod internal space 803c of the regulation hole 802d of the rod 802 is maintained in the same atmospheric pressure atmosphere as the outside by the through hole 810d1.
Further, the radial outer surface of the flange portion 802b of the rod 802 slides on the inner peripheral surface of the cylindrical portion 810a on the entire circumference.

That is, the position is regulated on both the inner and outer sides of the flange portion 802b of the rod 802 in the radial direction.
At the same time, the tip 802a at one end of the rod 802 slides in the through hole 816.
As a result, position regulation is performed at both end positions of the rod 802.

As a result, the moving direction is regulated so that the rod 802 can move along the axial direction.
Therefore, as shown in FIGS. 33 to 35, when the kicker 25 abuts, collides, or presses against the tip 802a of the rod 802, the moving direction of the rod 802 does not move unexpectedly in the axial direction. It is stable and moves in the axial direction.

The first position is, as shown in FIG. 32 corresponding to FIG. 26, a position where the rod 802 extends in the axial direction by the maximum distance that the kicker 25 can move toward one end, which is the end where the kicker 25 abuts or collides. Will be done.

The third position is a position in which the rod 802 is degenerated by the maximum distance that can be moved toward the other end in the axial direction, as shown in FIGS. 31 and 35 corresponding to FIGS. 25 and 29.
The second position is the position where the rod 802 is axially between the first and third positions, as shown in FIG. 30, which corresponds to FIG. The second position is a position where the rod 802 is close to the third position in the axial direction.

Next, in the switching valve (spool valve) 800 in the present embodiment, the drive unit 705 such as the motor of the cylinder drive unit 730 of the sluice valve 100 is energized (power supply) so that the normal valve opening / closing operation can be controlled. The operation of the cylinder drive unit 730 with no power supply to the drive unit 705 of the motor or the like due to a power failure or the like is shown in detail.

In either power supply state or no power supply state, the spool flow path 801 of the switching valve (spool valve) 800 is only when the movable valve portion (movable valve plate portion) 54 is in the valve opening shielding position and the valve closing position. It can be opened.

First, in the normal power supply state, the switching valve (spool valve) 800 operates between the second position and the third position.

Specifically, the rod 802 is located in the second position of the switching valve (spool valve) 800 in which the hydraulic motor 705 m of the drive unit 705 is energized and the valve is open.
That is, when the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position) and the flow path H is fully opened and can be distributed, the rod 802 is in the second position as shown in FIG. Located in.

At this time, as shown in FIG. 30, the tip 802a of the rod 802 projects from the through hole 816 to the outside of the plane 810b1 of the casing 810.
At the same time, in the orifice portion 807, only the orifice opening 807c communicates with the damping chamber 803 by the notch 802b3.

Further, the main cylinder port opening 801a communicates with the spool flow path 801. Only the pressing cylinder port opening 801b is closed by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.
Therefore, the spool flow path 801 is blocked.

The surface 811c1 of the flange portion 811c of the inner spool 811 is in contact with the stepped surface 810a2.
The flange portion 811b is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
The end surface 811b1 of the flange portion 811b is in contact with the C ring (stopper) 814 provided around the rod 802.

The surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b is in contact with the end surface 802b1 of the flange portion 802b of the rod 802.

In this state, the pressure applied to the end surface 802b1 of the flange portion 802b of the rod 802 is larger than the pressure applied to the end surface 812a2 of the cylindrical portion 812a of the outer spool 812, so that the rod 802 is directed from the lid portion 810c to the lid portion 810b. Pressure is acting in the direction.

Therefore, since the C ring (stopper) 814 is in contact with the end surface 811b1 of the flange portion 811b of the inner spool 811, the axial position of the rod 802 is restricted. At the same time, since the surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814, the axial position of the outer spool 812 is restricted.

Further, since the end surface 802b1 of the flange portion 802b of the rod 802 is in contact with the surface 812b1 of the flange portion 812b of the outer spool 812, the axial position of the rod 802 is restricted.

As a result, as shown in FIG. 30, the spool flow path 801 is closed, and the damping chamber 803 is in the second position where only the orifice opening 807c can communicate.

Further, in the normal power supply state, in the state after the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position), as shown in FIG. 31, the rod 802 is second. Immediately after moving from the position to the third position.

Further, by driving the valve box urging portion (pressing cylinder) 70, the movable valve portion (movable valve plate portion) 54 performs a sealing operation to change the position in the flow path H direction, and the movable valve portion (movable valve plate portion). The 54 slides from the valve opening shielding position (sliding preparation position) to the valve closing position, and the flow path H is closed. In this state, as shown in FIG. 31, the rod 802 is located in the third position.

At this time, as shown in FIG. 31, the tip 802a of the rod 802 is pushed into the through hole 816 by the kicker 25 and is located at a position flush with the plane 810b1 of the casing 810 or at a position retracted into the through hole 816. Has been done.
At the same time, the orifice portion 807 does not have an opening communicating with the damping chamber 803.

Further, both the main cylinder port opening 801a and the pressing cylinder port opening 801b communicate with the spool flow path 801. Neither the main cylinder port opening 801a nor the pressing cylinder port opening 801b is closed on the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.
Therefore, the spool flow path 801 is in a communicative state.

The surface 811c1 of the flange portion 811c of the inner spool 811 is in contact with the stepped surface 810a2.
The flange portion 811b is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
At this time, the end surface 811b1 of the flange portion 811b is not in contact with the C ring (stopper) 814 provided around the rod 802, but is separated from each other.

The surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b is in contact with the end surface 802b1 of the flange portion 802b of the rod 802.

In this state, since the tip 802a of the rod 802 is in contact with the kicker 25, the rod 802 is pressed by the kicker 25 in the direction from the lid portion 810b to the lid portion 810c.
The pressure on the rod 802 in this direction acts regardless of the magnitude of the pressure applied to the end surface 812a2 of the cylindrical portion 812a of the outer spool 812 and the pressure applied to the end surface 802b1 of the flange portion 802b of the rod 802.

Therefore, the axial position of the rod 802 is regulated. At the same time, since the surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814, the axial position of the outer spool 812 is restricted.

Further, since the surface 811c1 of the flange portion 811c of the inner spool 811 is in contact with the stepped surface 810a2, the axial position of the inner spool 811 is restricted.

As a result, as shown in FIG. 31, the orifice portion 807 of the damping chamber 803 is closed, and the spool flow path 801 is in the third position through which communication is possible.

Next, the movable valve portion (movable valve plate portion) 54 opens to change the position in the flow path H direction, and the movable valve portion (movable valve plate portion) 54 moves from the valve closing position to the valve opening shielding position ( When sliding to the sliding preparation position), the rod 802 moves from the third position to the second position.

At this time, since the pressure applied to the end surface 802b1 of the flange portion 802b of the rod 802 is larger than the pressure applied to the end surface 812a2 of the cylindrical portion 812a of the outer spool 812, the rod 802 is directed from the lid portion 810c to the lid portion 810b. Pressure is acting on.

At the same time, the contact of the kicker 25 is released from the tip 802a of the rod 802, so that the rod 802 moves in the direction from the lid portion 810c to the lid portion 810b. The rod 802 moves to a position where the C ring (stopper) 814 provided around the rod 802 comes into contact with the end surface 811b1 of the flange portion 811b of the inner spool 811.

As a result, as shown in FIG. 30, the spool flow path 801 is closed, and the damping chamber 803 is in the second position where only the orifice opening 807c can communicate.

Next, for example, a case where a power failure occurs and the power supply to the hydraulic motor 705 m of the drive unit 705 disappears will be described.

Next, in the event of an emergency such as a power failure, the switching valve (spool valve) 800 in the non-power supply state is from the second position to the first position, from the first position to the third position, and further to the second position. Operates with and from the third position.

On the other hand, when the sluice valve 100 is in the valve open state and the hydraulic motor 705 m of the drive unit 705 is energized, a power failure or the like occurs and the power is not supplied at that moment. Maintains a state in which the rod 802 is located at the second position in the switching valve (spool valve) 800, as shown in FIG.

In this state, as step S00 shown in FIG. 23, the movable valve portion (movable valve plate portion) 54 is in the retracted position (valve open position).
When a power failure occurs in step S01 shown in FIG. 23, the operation of the rotary drive motor 220 is regulated and the operation of the hydraulic motor 705 m is deregulated in steps S02 to S21 shown in FIG.
Next, as step S23 shown in FIG. 23, the cylinder volume of the hydraulic cylinder (main cylinder) 710 begins to decrease due to the urging force of the hydraulic urging member (main spring) 720. As a result, in step S24 shown in FIG. 23, the pressure of the hydraulic cylinder (main cylinder) 710 is increased by the urging force of the hydraulic urging member (main spring) 720.

Since the inside of the damping chamber 803 is in the same pressure as the hydraulic cylinder (main cylinder) 710 due to the damping check valve 805, the pressure in the damping chamber 803 rises.
When the pressure of the damping chamber 803 rises, the rod 802 is pressed and moves, and the volume of the damping chamber 803 expands against the urging force of the urging member (spool spring) 804. Along with this, the rod 802 extends from the second position shown in FIG. 30 to the first position shown in FIG. 32.

At this time, as shown in FIG. 32, the tip 802a of the rod 802 projects outward from the through hole 816 by a maximum distance from the plane 810b1 of the casing 810.
At the same time, in the orifice portion 807, all of the orifice opening 807c, the orifice opening 807b, and the orifice opening 807a communicate with the damping chamber 803.

Further, the main cylinder port opening 801a is closed to the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812. Similarly, the pressing cylinder port opening 801b is closed to the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.
Therefore, the spool flow path 801 is blocked.

In this state, in the hydraulic cylinder (main cylinder) 710, the pressure rises due to the urging force of the hydraulic urging member (main spring) 720, and the oil pressure (incompressible fluid) is supplied to the main cylinder port 702a.
Here, although the spool flow path 801 is closed, it can be distributed from the main cylinder port 702a to the damping chamber 803 by the damping check valve 805 connected in parallel with the spool flow path 801.

Therefore, hydraulic pressure (incompressible fluid) is supplied to the damping chamber 803.
As a result, in the damping chamber 803 where the pressure has risen, hydraulic pressure acts on the end surface 802b1 of the flange portion 802b of the rod 802 from the lid portion 810c to the lid portion 810b.

The surface 811c1 of the flange portion 811c of the inner spool 811 is located closer to the lid portion 810b than the stepped surface 810a2. That is, the surface 811c1 of the flange portion 811c is located at a position separated from the stepped surface 810a2.
The flange portion 811b is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
The end surface 811b1 of the flange portion 811b is in contact with the C ring (stopper) 814 provided around the rod 802.

The surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b is in contact with the surface 802b2 of the flange portion 802b of the rod 802.

Further, the C ring (stopper) 814 provided around the rod 802 is in contact with the end surface 811b1 of the flange portion 811b of the inner spool 811. The flange portion 811b of the inner spool 811 is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.

Here, on the rod 802, a hydraulic pressure acts on the end surface 802b1 of the flange portion 802b in the direction from the lid portion 810c to the lid portion 810b. Further, the rod 802 is provided with a biasing member (spool spring) 804 in the direction from the lid portion 810b, which is in the opposite direction to the flood control, toward the lid portion 810c via the flange portion 811b and the C ring (stopper) 814 of the inner spool 811. The urging force is working.

The oil pressure acting on the end face 802b1 is larger than the urging force of the urging member (spool spring) 804.
As a result, the rod 802 moves and extends in the direction from the lid portion 810c toward the lid portion 810b.

Therefore, since the C ring (stopper) 814 is in contact with the end surface 811b1 of the flange portion 811b of the inner spool 811, the axial position of the rod 802 is restricted. At the same time, since the surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814, the axial position of the outer spool 812 is restricted.

Further, since the end surface 802b1 of the flange portion 802b of the rod 802 is in contact with the surface 812b1 of the flange portion 812b of the outer spool 812, the axial position of the rod 802 is restricted.

As a result, as shown in FIG. 32, the spool flow path 801 is closed, and the damping chamber 803 is in the first position through which the orifice portion 807 can communicate.
As a result, in step S25 shown in FIG. 23, the rod 802 extended to the first position is in a standby state waiting for the kicker 25 to collide.

The check valve (spool check valve) 806 shuts off the pressure from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70.

As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

In this state, in steps S26 to S28 shown in FIG. 23, the operation of the rotary drive motor 220 is released from regulation, and the rotary shaft 20 is rotated by the power interruption urging device 230.
As a result, the movable valve portion (movable valve plate portion) 54 starts the closing rotation operation from the retracted position (valve opening position) to the valve opening shielding position (sliding preparation position).

In this state, the rotation operation of the rotation shaft 20 is not controlled even in the rotation shaft drive unit 200. Therefore, the closing rotation operation is performed extremely rapidly from the retracted position (valve opening position) of the movable valve portion (movable valve plate portion) 54 to the valve opening shielding position (sliding preparation position).

In step S29 shown in FIG. 23, the kicker 25 abuts or collides with the tip 802a of the rod 802 located at the first position as shown in FIG. 33 by the closed rotation operation. Subsequently, the kicker 25 moves the rod 802 from the first position to the second position by pressing the end portion of the rod 802.

At this time, the tip 802a of the rod 802 projects outward from the plane 810b1 of the casing 810 from the through hole 816, but is located closer to the second position than the first position.
At the same time, in the orifice portion 807, as shown in FIG. 33, the orifice opening 807c and the orifice opening 807b communicate with the damping chamber 803, but are located closest to the lid portion 810b. Is closed by the outer peripheral surface of the flange portion 802b of the rod 802.

Further, the main cylinder port opening 801a is closed to the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812. Similarly, the pressing cylinder port opening 801b is closed to the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.
Therefore, the spool flow path 801 is blocked.

The surface 811c1 of the flange portion 811c of the inner spool 811 is located closer to the lid portion 810b than the stepped surface 810a2. That is, the surface 811c1 of the flange portion 811c is located at a position separated from the stepped surface 810a2.
The flange portion 811b is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
The end surface 811b1 of the flange portion 811b is in contact with the C ring (stopper) 814 provided around the rod 802.

The surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b is in contact with the surface 802b2 of the flange portion 802b of the rod 802.

In this state, the volume of the damping chamber 803 tends to be momentarily reduced by the operation of the rod 802 collided with the kicker 25.
In this state, the tip 802a of the rod 802 is subjected to a force in the direction from the lid portion 810b to the lid portion 810c due to the impact force of the kicker 25 that abuts or collides with the tip 802a or the pressing force.

The pressing force or impact force of the kicker 25 is transmitted from the end surface 802b1 of the flange portion 802b of the rod 802 to the damping chamber 803.
As a result, the damping chamber 803 momentarily becomes high pressure. Here, the rising pressure of the damping chamber 803 is relaxed by the orifice portion 807 communicating with the damping chamber 803.

As a result, when the rod 802 is in a position close to the first position, all of the orifice opening 807c, the orifice opening 807b, and the orifice opening 807a communicate with the damping chamber 803. Therefore, the pressure rise in the damping chamber 803 can be released to the hydraulic cylinder (main cylinder) 710.

As the rod 802 moves closer to the second position, the orifice opening 807a is closed by the outer peripheral surface of the flange portion 802b of the rod 802.
At this time, the cutout portion 802b3 can relax the flow rate of the hydraulic pressure escaping from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710.

Further, as the rod 802 moves closer to the second position, the orifice opening 807b is then closed by the outer peripheral surface of the flange portion 802b of the rod 802.
Also at this time, the cutout portion 802b3 can alleviate the flow rate of the hydraulic pressure escaping from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710.

The rod 802 receives a reaction force from the end surface 802b1 of the flange portion 802b due to the pressing force or the impact force of the kicker 25. Due to this reaction force, the movement of the rod 802 can be relaxed against the impact force or the pressing force of the kicker 25. That is, the movement of the kicker 25 can be relaxed. That is, the closing rotation operation of the movable valve portion (movable valve plate portion) 54 can be relaxed.

At this time, in the hydraulic cylinder (main cylinder) 710, the pressure fluctuation is absorbed by the deformation of the hydraulic urging member (main spring) 720.

The rising pressure of the damping chamber 803, which has become momentarily high, is shut off toward the main cylinder port 702a by the damping check valve 805. This prevents the transmission of a high-pressure impact to the main cylinder port 702a and the portion communicating with the main cylinder port 702a.

Further, the C ring (stopper) 814 provided around the rod 802 is in contact with the end surface 811b1 of the flange portion 811b of the inner spool 811. The flange portion 811b of the inner spool 811 is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.

Here, the impact force of the kicker 25 acts on the rod 802. In addition to this, the rod 802 is subjected to the urging force of the urging member (spool spring) 804 in the direction from the lid portion 810b to the lid portion 810c via the flange portion 811b and the C ring (stopper) 814 of the inner spool 811. Is working.

Therefore, since the C ring (stopper) 814 is in contact with the end surface 811b1 of the flange portion 811b of the inner spool 811, the axial position of the rod 802 is restricted. At the same time, since the surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814, the axial position of the outer spool 812 is restricted.

Further, since the end surface 802b1 of the flange portion 802b of the rod 802 is in contact with the surface 812b1 of the flange portion 812b of the outer spool 812, the axial position of the rod 802 is restricted.

The spool flow path 801 maintains a closed state. The main cylinder port 702a and the pressing cylinder port 702b are cut off. The urging member (spool spring) 804 urges the rod 802.
The check valve (spool check valve) 806 shuts off the pressure from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70.

As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

Further, by the closed rotation operation, the movable valve portion (movable valve plate portion) 54 continues to rotate from the retracted position (valve open position) to the valve opening shielding position (sliding preparation position), and the movable valve portion (movable valve). The plate portion) 54 approaches the valve opening shielding position (sliding preparation position).

In this state, the kicker 25 presses the rod 802 in contact with the end portion to move the rod 802 toward the second position, and as shown in FIG. 34, the rod 802 is moved to the second position. Close to each other.
At this time, the tip 802a of the rod 802 protrudes from the through hole 816 so as to be located outside the plane 810b1 of the casing 810, but is located close to the second position.

Here, the volume of the damping chamber 803 tends to be continuously reduced by the operation of the rod 802 continuously pressed by the kicker 25. At this time, the damping chamber 803 maintains a high pressure state although it gradually decreases. Here, the pressure in the damping chamber 803 is continuously relieved by the orifice portion 807 communicating with the damping chamber 803.

At this time, high pressure is continuously released from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710 via the orifice portion 807.
At this time, in the orifice portion 807, as shown in FIG. 34, the orifice opening 807c located closest to the lid portion 810c communicates with the damping chamber 803. On the other hand, the orifice opening 807b and the orifice opening 807a located close to the lid portion 810b are closed by the outer peripheral surface of the flange portion 802b of the rod 802.

Further, the main cylinder port opening 801a is communicated with the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812. On the other hand, the pressing cylinder port opening 801b is closed to the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.
Therefore, the spool flow path 801 is blocked.

The surface 811c1 of the flange portion 811c of the inner spool 811 is located closer to the lid portion 810b than the stepped surface 810a2. That is, the surface 811c1 of the flange portion 811c is located at a position separated from the stepped surface 810a2.
The flange portion 811b is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
The end surface 811b1 of the flange portion 811b is in contact with the C ring (stopper) 814 provided around the rod 802.

The surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b is in contact with the surface 802b2 of the flange portion 802b of the rod 802.

In this state, the volume of the damping chamber 803 tends to be continuously reduced by the operation of the rod 802 pressed by the kicker 25.
In this state, the tip 802a of the rod 802 exerts a force in the direction from the lid portion 810b to the lid portion 810c due to the pressing force of the kicker 25 that abuts or collides with the tip 802a.

The pressing force of the kicker 25 is transmitted from the end face 802b1 of the flange portion 802b of the rod 802 to the damping chamber 803.
As a result, the damping chamber 803 maintains a high pressure state. Here, the pressure relaxation of the damping chamber 803 by the orifice portion 807 is continued.

As a result, as the rod 802 moves closer to the second position, the orifice opening 807b following the orifice opening 807a is closed by the outer peripheral surface of the flange portion 802b of the rod 802.
At this time, the cutout portion 802b3 can relax the flow rate of the hydraulic pressure escaping from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710.

Further, as the rod 802 moves closer to the second position, the notch 802b3 can relax the flow rate of the hydraulic pressure escaping from the damping chamber 803 to the hydraulic cylinder (main cylinder) 710.

As the rod 802 moves and approaches the second position, the flow rate of the orifice portion 807 decreases, and the moving speed of the rod 802 can be further relaxed.
As a result, the kicker 25 can be moved, that is, the closed rotation operation of the movable valve portion (movable valve plate portion) 54 can be relaxed at an angle.

In the hydraulic cylinder (main cylinder) 710, the pressure fluctuation is continuously absorbed due to the deformation of the hydraulic urging member (main spring) 720.

The high pressure of the damping chamber 803 is blocked by the damping check valve 805 toward the main cylinder port 702a. This prevents the transmission of a high-pressure impact to the main cylinder port 702a and the portion communicating with the main cylinder port 702a.

Further, the C ring (stopper) 814 provided around the rod 802 is in contact with the end surface 811b1 of the flange portion 811b of the inner spool 811. The flange portion 811b of the inner spool 811 is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.

Here, the pressing force of the kicker 25 acts on the rod 802. In addition to this, the rod 802 is subjected to the urging force of the urging member (spool spring) 804 in the direction from the lid portion 810b to the lid portion 810c via the flange portion 811b and the C ring (stopper) 814 of the inner spool 811. Is working.

Therefore, since the C ring (stopper) 814 is in contact with the end surface 811b1 of the flange portion 811b of the inner spool 811, the axial position of the rod 802 is restricted. At the same time, since the surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814, the axial position of the outer spool 812 is restricted.

Further, since the end surface 802b1 of the flange portion 802b of the rod 802 is in contact with the surface 812b1 of the flange portion 812b of the outer spool 812, the axial position of the rod 802 is restricted.

The spool flow path 801 maintains a closed state until the rod 802 reaches the second position. The main cylinder port 702a and the pressing cylinder port 702b are cut off. The urging member (spool spring) 804 urges the rod 802.
The check valve (spool check valve) 806 shuts off the pressure from the hydraulic cylinder (main cylinder) 710 to the valve box urging portion (pressing cylinder) 70.

As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

Further, by the closed rotation operation, the kicker 25 presses the rod 802 in contact with the end portion of the rod 802, so that the rod 802 reaches the second position.

In this state, the orifice portion 807 is closed by the movement of the rod 802, and the damping chamber 803 is shut off from the hydraulic cylinder (main cylinder) 710.
At this time, in the orifice portion 807, the orifice opening 807c located closest to the lid portion 810c is communicated with the damping chamber 803 by the notch portion 802b3, as in the state shown in FIG. Further, the orifice opening 807b and the orifice opening 807a located close to the lid portion 810b are closed by the outer peripheral surface of the flange portion 802b of the rod 802.

This completes pressure relaxation. At this time, the pressure fluctuation is absorbed by the deformation of the hydraulic urging member (main spring) 720 in the hydraulic cylinder (main cylinder) 710, and the pressure in the damping chamber 803 is sufficiently lowered.

Further, the main cylinder port opening 801a is communicated with the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812. On the other hand, the pressing cylinder port opening 801b is closed to the spool flow path 801 by the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.
Therefore, the spool flow path 801 is blocked.

The flange portion 811b is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
The end surface 811b1 of the flange portion 811b is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 811c1 of the flange portion 811c of the inner spool 811 is in contact with the stepped surface 810a2.
Therefore, the urging member (spool spring) 804 is in a state in which the urging of the rod 802 is released.

The surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b is in contact with the surface 802b2 of the flange portion 802b of the rod 802.

In this state, the tip 802a of the rod 802 is pressed by the kicker 25 in contact with the tip 802a in the direction from the lid 810b to the lid 810c.
The pressing force of the kicker 25 is transmitted from the end face 802b1 of the flange portion 802b of the rod 802 to the damping chamber 803.

The check valve (spool check valve) 806 shuts off the hydraulic cylinder (main cylinder) 710 toward the valve box urging portion (pressing cylinder) 70.
As a result, the pressure of the valve box urging portion (pressing cylinder) 70 does not fluctuate.
Therefore, the valve box urging portion (pressing cylinder) 70 maintains a state in which the tip portion of the movable portion 72 is degenerated by the urging member (pressing spring) 73.

Further, in step S30 shown in FIG. 23, the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position) as shown in FIG. 35 by the closed rotation operation.

In this state, the kicker 25 presses the rod 802 in contact with the end portion. As a result, the rod 802 passes through the second position and reaches the third position.
At this time, the kicker 25 comes into contact with the flat surface 810b1 of the lid portion 810b of the casing 810. As a result, the kicker 25 becomes the operation stop position, and the closing rotation operation of the kicker 25 ends. The plane 810b1 regulates the end position of the closed rotation operation in the closed rotation operation of the kicker 25.

Here, at the same time when the movable valve portion (movable valve plate portion) 54 reaches the valve opening shielding position (sliding preparation position), the rod 802 reaches the third position as shown in FIG. 35.
When the rod 802 reaches the third position, the spool flow path 801 is in the communicating state for the first time due to the movement of the rod 802.

At this time, as shown in FIG. 35, the tip 802a of the rod 802 is pushed into the through hole 816 by the kicker 25 and is flush with the plane 810b1 of the casing 810, or is retracted into the through hole 816. It is said that.
At the same time, the orifice portion 807 does not have an opening communicating with the damping chamber 803.

Further, both the main cylinder port opening 801a and the pressing cylinder port opening 801b communicate with the spool flow path 801. Neither the main cylinder port opening 801a nor the pressing cylinder port opening 801b is closed on the outer peripheral surface of the cylindrical portion 812a of the outer spool 812.
Therefore, the spool flow path 801 is in a communicative state.

The surface 811c1 of the flange portion 811c of the inner spool 811 is in contact with the stepped surface 810a2.
The flange portion 811b is urged by an urging member (spool spring) 804 in the direction from the lid portion 810b toward the lid portion 810c.
At this time, the end surface 811b1 of the flange portion 811b is not in contact with the C ring (stopper) 814 provided around the rod 802, but is separated from each other.
Therefore, the rod 802 is not urged by the urging member (spool spring) 804.

The surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814 provided around the rod 802.
The surface 812b1 of the flange portion 812b is in contact with the end surface 802b1 of the flange portion 802b of the rod 802.

In this state, the kicker 25 is in contact with the tip 802a of the rod 802. This state is maintained regardless of the magnitude of the pressure applied to the end surface 812a2 of the cylindrical portion 812a of the outer spool 812 and the pressure applied to the end surface 802b1 of the flange portion 802b of the rod 802.

In this way, the tip 802a of the rod 802 is in contact with the kicker 25. Therefore, the rod 802 is pressed by the kicker 25 in the direction from the lid portion 810b to the lid portion 810c.

Therefore, the axial position of the rod 802 is regulated. At the same time, the surface 812b2 of the flange portion 812b of the outer spool 812 is in contact with the C ring (stopper) 814. Therefore, the axial position of the outer spool 812 is restricted.

Further, the surface 811c1 of the flange portion 811c of the inner spool 811 is in contact with the stepped surface 810a2. Therefore, the axial position of the inner spool 811 is restricted.

As a result, as shown in FIG. 35, the orifice portion 807 of the damping chamber 803 is closed, and the spool flow path 801 is in the third position through which communication is possible.
Then, the hydraulic supply is switched by the switching function of the switching valve (spool valve) 800.

That is, the check valve (spool check valve) 806 shuts off the hydraulic cylinder (main cylinder) 710 toward the valve box urging portion (pressing cylinder) 70, but the spool flow path 801 communicates with the check valve (spool check valve) 806. ..

As a result, the pressure of the valve box urging portion (pressing cylinder) 70 rises.
Therefore, the valve box urging portion (pressing cylinder) 70 is in a state in which the tip portion of the movable portion 72 is extended by overcoming the urging force of the urging member (pressing spring) 73.

At this time, the movable valve portion (movable valve plate portion) 54 undergoes a sealing operation to change the position in the flow path H direction as step S31 shown in FIG. 23 by being pressed by the tip portion of the movable portion 72.
As a result, the movable valve portion (movable valve plate portion) 54 slides from the valve opening shielding position (sliding preparation position) to the valve closing position, and the flow path H is closed.

This completes the valve closing operation by springback as a normal close in an emergency such as a power failure.

As described above, the partition valve 100 of the present embodiment performs step S21, step S25, step S26, and step S29 in this order. As a result, the switching valve (spool valve) 800 can exhibit an impact mitigation function as a hydraulic damper and a hydraulic switching function.

Inside the casing 810, the rod internal space 803c and the spool flow path 801 are in the same pressure state except for the damping operation state (pressure relaxation state) in which a high pressure is applied to the damping chamber 803. Further, the rod internal space 803c is always maintained at atmospheric pressure.
Conversely, inside the casing 810, in the damping operation state (pressure relaxation state), only the damping chamber 803 has a high pressure due to the damping check valve 805.

Further, as step S26, the timing at which the release control unit 101 outputs the release instruction signal is as step S25, it is detected that the rod 802 is extended to the first position and is in a standby state waiting for the kicker 25 to collide. It is said that after doing so. Here, the receiving state of the rod 802 can be detected by a position sensor or the like with respect to the rod 802.

In the present embodiment, as in the sixth embodiment described above, it is possible to achieve the effect of realizing a normal close that simultaneously exhibits incompressible fluid supply switching and impact mitigation.

Hereinafter, a seventh embodiment of the partition valve according to the present invention will be described with reference to the drawings.
FIG. 36 is a cross-sectional view in the direction of the rotation axis for explaining the rotation axis drive unit of the oil partition valve according to the present embodiment.
In the present embodiment, the difference from the second embodiment described above is that the planetary gear clutch of the rotating shaft drive unit is used, and the other corresponding components are designated by the same reference numerals and the description thereof will be omitted.

The rotary shaft drive unit 200 in the present embodiment has a configuration having the same function as the rotary shaft drive unit 200 in the second embodiment described above.

The rotary shaft drive unit 200 in the present embodiment is also an electric actuator for rotating the rotary shaft 20 as in the second embodiment described above.
In the rotary shaft drive unit 200, the royal fern shaft 231c and the brake shaft 241c are configured to be one combined coaxial 205c.

The joint coaxial 205c is arranged parallel to the rotating shaft 20. The congruent coaxial 205c is arranged to correspond to the royal fern shaft 231c in the above-described embodiment.
A spring 231 and an excitation actuated brake 241 are connected to the joint coaxial 205c.
The mainspring 231 and the excitation actuated brake 241 are connected to the joint coaxial 205c at different positions in the axial direction of the joint coaxial 205c.

Further, a relay gear 209 is arranged between the rotary drive motor 220 and the drive gear 211.
The large relay gear 244 and the small relay gear 243 are rotatably attached to the rotating shaft 20.

A non-excited operation brake 221 is connected to the rotary drive motor 220.
The non-excited operation brake 221 exerts a braking function when the power is cut off, and stops the rotation of the rotary drive motor 220.
The non-excited operation brake 221 releases the brake function when energized so that the rotary drive motor 220 can be rotationally driven. The non-excited operation brake 221 is connected to the brake operation release unit 225f.
In addition to the above configuration, the rotary drive motor 220 may be accompanied by a gear unit for adjusting torque and rotation speed and a motor unit for control.

A counterweight (balancer) CW of the neutral valve body 5 is provided on the rotary shaft 20, so that the torque required for the rotary drive motor 220 and the mainspring 231 can be reduced.
The counterweight (balancer) CW is provided at a position symmetrical with the neutral valve body 5 of the rotating shaft 20. Further, the counterweight CW can also be provided as an operation switch (stopper) 21 of the switching valve (spool valve) 800.
In FIG. 36, reference numeral 32 indicates a place where the counterweight (balancer) is attached.

In the present embodiment, as in the above-described embodiment, it is possible to achieve the effect of realizing a normal close that simultaneously exhibits incompressible fluid supply switching and impact mitigation.

In the present invention, the individual configurations in each of the above embodiments can be appropriately selected and combined.

10 ... Valve box 11 ... Hollow part 20 ... Rotating shaft 25 ... Kicker 30 ... Neutral valve part 40 ... Movable valve part 50 ... Movable valve plate part 54 ... Movable valve part (movable valve plate part)
63 ... Valve frame part 70 ... Valve box urging part (pressing cylinder)
71 ... Fixed part 72 ... Movable part (expandable rod)
73 ... Biasing member (pressing spring)
80 ... Valve plate urging part (holding spring)
90 ... Valve frame urging part (auxiliary spring)
100 ... Partition valve 101 ... Release control unit 102 ... Uninterruptible power supply 200 ... Rotating shaft drive unit 220 ... Rotational drive motor 221 ... Incompressible operation brake 225f ... Brake operation release unit 227 ... Power supply 230 ... Electric power cutoff urging device 231 ... Zenmai spring 700 ... Hydraulic drive unit (incompressible fluid drive unit)
700 ... Hydraulic drive unit 701 ... Flood control generation unit 702 ... Hydraulic pipe 705 ... Drive unit 705b ... Non-excitation operation brake 705f ... Brake operation release unit 705m ... Hydraulic motor 707 ... Power supply 710 ... Hydraulic cylinder (main cylinder)
720 ... Hydraulic urging member (main spring)
800 ... Switching valve (spool valve)
802 ... Rod (switching sensor)
H ... Flow path

Claims (7)

A partition valve that can operate normally closed
Hollow part and
A valve box having a first opening and a second opening that are provided so as to face each other and serve as a flow path that sandwiches the hollow portion and communicates with each other.
With a valve body that can open and close the flow path,
A rotating shaft that rotatably supports the valve body between the retracted position and the valve opening shielding position in the hollow portion and has an axis extending in the flow path direction.
A rotary shaft drive unit having a rotary drive motor capable of rotating the rotary shaft to rotationally drive the valve body,
A movable valve portion provided on the valve body so that the position in the flow path direction can be changed,
A valve box urging portion provided in the valve box to move and close the movable valve portion at the valve opening shielding position in the flow path direction, and
A hydraulic drive unit that supplies and drives operating hydraulic pressure to the valve box urging unit, and
The oil pressure generating part that generates the oil pressure in the hydraulic drive part and
A drive unit having a hydraulic motor and a hydraulic urging member for driving the hydraulic pressure generating unit,
The rotary shaft drive unit and the power supply that supplies power to the drive unit,
A non-excitation brake that regulates the operation of the rotary drive motor when the power is cut off,
A non-excitation brake that regulates the operation of the hydraulic motor when the power is cut off,
A brake operation release unit that releases the operation of the non-excitation operation brake,
A partition valve characterized by being equipped with. The brake operation release unit
A non-excitation brake that regulates the operation of the rotary drive motor,
A non-excited operation brake that regulates the operation of the hydraulic motor,
The partition valve according to claim 1, wherein the operation can be independently released. The brake operation release unit
The non-excitation operation brake that regulates the operation of the rotary drive motor is released, and the operation is released.
The partition valve according to claim 1, wherein the operation of the non-excitation operation brake that regulates the operation of the hydraulic motor is then released. The brake operation release unit
The partition valve according to any one of claims 1 to 3, wherein the partition valve is connected to a release control unit capable of outputting a release instruction signal based on the information in the flow path. The partition valve according to claim 4, wherein the release control unit determines whether or not to output a release instruction signal based on the information in the flow path. The brake operation release unit
The non-excitation operation brake that regulates the operation of the hydraulic motor is released, and the operation is released.
After the hydraulic damper is operational
The partition valve according to claim 1, wherein the operation of the non-excitation operation brake that regulates the operation of the rotary drive motor is released. The brake operation release unit
The partition valve according to any one of claims 1 to 3, characterized in that it can be manually operated.

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