KR20200075728A - Pneumatic delayed shutoff type valve shutter - Google Patents

Abstract

A pneumatic delay shutoff type valve shutter according to one embodiment may include: an operation unit gripping a handle of a valve; a rotation shaft connected to the operation unit; an air motor connected to the rotation shaft and rotating the rotation shaft in the direction of opening the handle; a pneumatic source supplying a pneumatic pressure to the air motor; and a pneumatic cutoff unit installed between the pneumatic source and the air motor and blocking the pneumatic pressure supplied to the air motor after a set time. Accordingly, the pneumatic delay shutoff type valve shutter can automatically open and close a gas cylinder.

Description

Pneumatic delay shutoff valve shutter {PNEUMATIC DELAYED SHUTOFF TYPE VALVE SHUTTER}

The following description relates to a pneumatic delay shut-off valve shutter.

A gas cylinder is a device that stores compressed gas or liquid. The gas cylinder may include a cylindrical cylinder body for accommodating gas and a cylinder head installed on an upper side of the cylinder body to control gas supply and flow rate.

In order to supply the gas accommodated in the gas cylinder to the supply target, the operator can directly adjust the opening and closing of the valve by rotating the valve handle after fastening the connector of the gas cylinder to the outlet port.

However, due to the risk of a potential accident due to gas leakage, it was a safety burden that an operator in the field had to connect the gas cylinder to an external connector or rotate the valve handle by gripping it directly.

Accordingly, research and development of a device capable of automatically opening and closing a valve of a gas cylinder remotely is being actively conducted. In particular, the development of a device that can be universally applied to a valve handle of a gas cylinder having a different rotation range while preventing damage or damage due to over rotation is in progress.

The above-described background technology is possessed or acquired by the inventor during the derivation process of the present invention, and is not necessarily a known technology disclosed to the general public before filing the present invention.

The purpose of one embodiment is to provide a pneumatic delay shutoff valve shutter.

The pneumatic delay shut-off valve shutter according to an embodiment includes an operation unit that grips a handle of the valve; A rotating shaft connected to the operation unit; An air motor connected to the rotating shaft to rotate the rotating shaft in a direction in which the handle is opened; A pneumatic source for supplying air pressure to the air motor; And it may be installed between the pneumatic source and the air motor may include a pneumatic block that can block the air pressure supplied to the air motor after a set time.

The pneumatic blocking unit, a first pneumatic line connected between the pneumatic source and the air motor; A blocking switch installed on the first pneumatic line and selectively blocking the first pneumatic line according to whether a pressing force is applied from the outside; And a pneumatic operation unit that is driven through pneumatics supplied from the pneumatic source and presses the blocking switch.

The blocking switch includes a communication flow path forming a flow path between the first pneumatic lines; And it may be pressurized in accordance with the driving of the pneumatic operation unit includes a switching unit for blocking the communication flow path, the pneumatic operation unit, the interior space receiving the air pressure supplied from the pneumatic source; And a pressing portion moving toward the switching portion by pneumatic pressure formed in the interior space.

The pneumatic operation unit may further include a first blocking elastic body that applies an elastic force to the pressing unit along a direction away from the switching unit, and the blocking switch includes a direction in which the switching unit faces the pressing unit. Accordingly, a second blocking elastic body for applying elastic force to the switching unit may be further included, and when air pressure is not applied to the blocking switch and the pneumatic operation unit, the pressing unit does not press the switching unit and the communication flow path is switched. It may not be blocked by wealth.

The shut-off switch may further include a variable vent part capable of discharging a part of the gas accommodated in the interior space to the outside and controlling the size of the discharge flow path.

The pneumatic shut-off unit, a second pneumatic flow path connected between the pneumatic source and the shut-off switch; And a pneumatic control unit installed in the second pneumatic flow path to adjust a cross-sectional area of the flow path.

A pneumatic delay blocking valve shutter according to an embodiment includes: a rotating elastic body that applies an elastic force to rotate the rotating shaft in a closing direction in which the handle is closed; And a stopper that is driven through pneumatics supplied from the pneumatic source and secures the rotating shaft from being rotated in the closed direction.

The stopper, when applied with air pressure, prevents rotation of the rotating shaft in the closed direction by a one-way clutch method, and rotation in the open direction may be permitted.

The pneumatic delay blocking valve shutter according to an embodiment may further include a rotating elastic body that applies an elastic force to rotate the rotating shaft in a closing direction in which the handle is closed, and the manipulation unit contacts the upper side of the handle The handle receiving portion for rotatably receiving the handle; And a differential rotation part installed on the upper side of the handle receiving part to transmit the rotational force of the rotating shaft to the handle receiving part, the rotation angle of the rotating shaft being different from the rotation angle of the rotating shaft according to the rotation direction of the rotating shaft. Can do it

While the handle is rotated from the maximum closed state to the state in which the rotating shaft opens the handle to the maximum, the rotating shaft rotates relative to the handle receiving portion by a first set angle in the opening direction, A second set angle less than a first set angle in the closing direction with respect to the handle receiving portion, while the handle is rotated from the maximum open state to the state in which the rotating shaft closes the handle to the maximum. As long as it can rotate relatively.

According to the pneumatic delay shut-off valve shutter according to an embodiment, the gas cylinder may be automatically opened and closed.

According to the pneumatic delay cutoff valve shutter according to an embodiment, the angle of rotating the handle when the valve of the gas cylinder is opened and the angle of rotating the handle when the valve of the gas cylinder is blocked are provided differently, thereby improving safety of use. have.

According to the pneumatic delay blocking method valve shutter according to an embodiment, even when mounted on a valve handle having a different rotation angle, it is possible to prevent overrotation to prevent damage to the valve handle and the pneumatic delay blocking method valve shutter.

1 is a perspective view showing a gas cylinder.
2 and 3 are perspective views of a pneumatic delay blocking type valve shutter according to an embodiment.
4 is a block diagram of a pneumatic delay shut-off valve shutter according to an embodiment.
5 and 6 is a view showing the operation configuration of the pneumatic shut-off unit according to an embodiment.
7 is a perspective view of an operation unit according to an embodiment.
8 is an exploded perspective view of an operation unit according to an embodiment.
9 to 12 are views showing an operation configuration of the operation unit according to an embodiment.

Hereinafter, embodiments will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing an embodiment, when it is determined that a detailed description of a related known configuration or function interferes with understanding of the embodiment, the detailed description is omitted.

Further, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), and the like can be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected to or connected to the other component, but another component between each component It should be understood that may be "connected", "coupled" or "connected".

Components included in any one embodiment and components including common functions will be described using the same name in other embodiments. Unless there is an objection to the contrary, the description described in any one embodiment may be applied to other embodiments, and a detailed description will be omitted in the overlapped range.

1 is a perspective view showing a gas cylinder.

Referring to FIG. 1, the gas cylinder 9 may include a cylinder body 91 in which compressed gas is accommodated, and a cylinder head 92 protruding upward from the cylinder body 91.

The cylinder body 91 may have a shape extending in a direction perpendicular to the ground, and may be a cylindrical member having a circular cross-section in the extended direction.

The cylinder head 92 is a portion protruding from the top of the cylinder body, and can control the flow and flow rate of the gas.

For example, the cylinder head 92 is communicated from the cylinder body 91, the outlet port 921 connected to an external supply and charging connector, a handle 922 for adjusting the opening ratio of the outlet port 921 ) And a pressure reducing unit 923 for preventing an increase in excessive pressure of gas in the cylinder head 92.

On the other hand, if the handle 922 of the gas cylinder 9 is rotated repeatedly, wear of the material occurs at the handle 922 and the portion connected to it. Therefore, in order to prevent a gas leak problem, once the handle 922 once opened is blocked again, it is rotated in the opposite direction by an angle greater than the angle rotated in a certain direction to open the handle 922 Should do. Conventionally, the process of opening and blocking the handle 922 has been manually performed by an operator, and the operator has unconsciously rotated the handle 922 until the gas cylinder 9 was blocked by turning the handle 922 until a sufficient force is felt. there was no problem. However, in order to automatically open and block the handle 922 of the gas cylinder 9, such a problem must be considered. Hereinafter, in order to solve such a problem, the angle of turning the handle 922 when blocked is more than the angle of turning the handle 922 when the gas cylinder 9 is opened, using only a physical element without using a special control method. An embodiment of an automatic pneumatic delay shut-off valve shutter that can be enlarged will be described.

2 and 3 are perspective views of a pneumatic delay cutoff valve shutter according to one embodiment, FIG. 4 is a block diagram of a pneumatic delay cutoff valve shutter according to an embodiment, and FIGS. 5 and 6 are in one embodiment It is a diagram schematically showing the operation configuration of the pneumatic shut-off unit.

2 to 6, when the gas cylinder is mounted on the automatic pneumatic delay shutoff valve shutter 1, the automatic pneumatic delay shutoff valve shutter rotates the handle 922 (see FIG. 1) clockwise to turn the gas cylinder. The valve can be closed or the handle can be turned counterclockwise to open the valve of the gas cylinder. The automatic pneumatic delay shut-off valve shutter can be operated using a drive source such as an air motor (M).

The pneumatic delay blocking valve shutter 1 according to an embodiment includes a driving unit 11 for rotating the rotating shaft S through the air motor M, one end is connected to the rotating shaft S, and the other end is a handle ( It may include a control unit 12 for connecting to the 922 to rotate the handle 922, and a support 13 for supporting the drive unit 11 from the cylinder head 92 of the gas cylinder (9).

The driving unit 11 includes an air motor M operated pneumatically, a pneumatic source 114 providing air pressure for driving the air motor M, and a rotating shaft S rotated by the air motor M ), a rotating elastic body 111 connected to the rotating shaft S, a plurality of gears 112 coupled to the rotating shaft S, and a stopper for fixing the plurality of gears 112 when air pressure is applied It may include a pneumatic blocking unit 115 that is connected between the 113 and the pneumatic source 114 and the air motor (M) to block the air pressure supplied to the air motor (M) after a set time.

For example, the rotating elastic body 111 may be a mainspring spring.

For example, the direction in which the rotation axis S rotates by the air motor M may be referred to as an “open direction” for rotating the handle 922 so that the cylinder head 92 is opened.

Conversely, the direction in which the rotational axis S rotates in the opening direction to rotate the handle 922 in a direction opposite to the opening direction so that the elastic energy of the compressed rotating elastic body 111 is closed is closed. Direction.

For example, the rotation axis S may be formed as a single axis, but may also be formed as a plurality of axes that rotate in engagement with each other through a plurality of gears 112 between the air motor M and the operation unit 12. have. In this case, it is noted that the opening direction and the closing direction for each axis may be different from each other.

The stopper 113 may prevent rotation in the closing direction of the rotation shaft S in a one-way clutch method when air pressure is applied, and allow rotation in the open direction.

For example, the stopper 113 receives air pressure from the pneumatic source 114 to fix at least one gear among a plurality of gears 112 connected to the rotating shaft S so that the rotating shaft S rotates in the closed direction Can be prevented.

For example, the stopper 113 may be provided with a pin receiving a pneumatic pressure, and may include a pin protruding in a piston manner toward at least one gear of the plurality of gears 112. When the pin protrudes by pneumatic pressure, the at least The movement of the gears may be prevented by interposing in a space between teeth of one or more gears and teeth.

For example, at least one gear fixed by the stopper 113 may be installed in a one-way clutch manner on the rotating shaft S. In this case, when the at least one or more gears are fixed by the stopper 113, the rotation shaft S may rotate in the open direction, but may not rotate in the closed direction.

The pneumatic blocker 115 applies air pressure supplied from the pneumatic source 114 to the air motor M for a set time, but physically blocks the air pressure applied to the air motor M from the time when the set time is delayed. The operation of the air motor M, that is, rotation of the rotational axis S in the open direction can be stopped.

For example, the pneumatic shut-off unit 115 may include a first pneumatic line (L1), a second pneumatic line (L2), a pneumatic operation unit 1151, a shut-off switch 1152 and a pneumatic control unit 1153 have.

The first pneumatic line L1 is connected to the air motor M from the pneumatic source 114 to provide air pressure to the air motor M.

The second pneumatic line L2 is connected to the pneumatic operation unit 1151 from the pneumatic source 114 to provide pneumatic operation to the pneumatic operation unit 1151.

The pneumatic operation unit 1151 may selectively press the blocking switch 1152 through pneumatic pressure supplied from the pneumatic source 114. For example, the pneumatic actuator 1151 may include a cylindrical member in which at least a portion is translated through pneumatics.

For example, the pneumatic operation unit 1151 may include an inner space 1113, a pressing unit 1151, a first blocking elastic body 1154, and a variable vent portion 1112.

The interior space 1113 may be a space for receiving a high-pressure gas supplied from the second pneumatic line L2.

The pressurizing portion 11511 may be translated into the switching portion 1151 of the blocking switch 1152 by pneumatic pressure formed in the inner space 1113. For example, a part of the pressing portion 11511 may be installed in the inner space 1113, and may be translated by the pneumatic pressure formed in the inner space 1113.

For example, when the air pressure is supplied to the pneumatic operation unit 1151 for a set time so that the pressure unit 1151 moves toward the switching unit 1151 by a predetermined interval, the pressing unit 1151 contacts the switching unit 1151 By pressurizing, the shut-off switch 1152 can be operated.

The first blocking elastic body 1154 may apply an elastic force to the pressing portion 11511 along a direction in which the pressing portion 11511 moves away from the switching portion 1151. For example, the first blocking elastic body 1114 may be a spring.

For example, in the case of the first blocking elastic body 1154, the pressing portion 1151 advances toward the switching portion 1151 by pneumatic pressure, thereby forming a load that resists this, so that pneumatic pressure is not applied to the pneumatic operating portion 1151 From the uninitialized state, the "setting time" is required for the pressurizing portion 1151 to contact the blocking switch 1152.

For example, when the air pressure applied to the pneumatic operation unit 1151 is released in a state where the pressing unit 11511 is in contact with the switching unit 1151, the pressing unit 11511 is elastic of the first blocking elastic body 1114 It is moved in a direction away from the switching unit 1151 through the restoring force to return to a position in an initial state in which pneumatic pressure is not applied.

The variable vent part 11512 may include a hole for discharging a part of the high-pressure gas accommodated in the interior space 1113 to the outside. For example, the size of the hole of the variable vent portion 11512 may be variably adjusted.

As the area of the flow path of the variable vent part 1112 is adjusted, the size of the air pressure in the inner space 1113 of the pneumatic operation part 1151 may be adjusted. Accordingly, a set time required for the pressing portion 1151 to move to contact the blocking switch 1152 from the initial state in which air pressure is not applied may be adjusted.

For example, the variable vent portion 11512 may include a control valve that can adjust the size of a flow path through which pneumatic leaks.

For example, the variable vent part 11512 may include a screwed member to block a portion of the flow path through which pneumatic leaks, so that the size of the area blocking the flow path through the rotation of the member is adjusted so that the interior space is adjusted. It is possible to control the degree of leakage of air pressure from (11513).

The blocking switch 1152 may be installed on the first pneumatic line L1 to selectively block the first pneumatic line L1 according to whether a pressing force is applied from the outside.

For example, when no force is applied to the cut-off switch 1152, the first pneumatic line L1 is in communication with the air motor M to be driven, and when a force is applied from the outside, the first pneumatic line L1 is The operation of the air motor M may be stopped by being blocked.

For example, the cut-off switch 1152 is a communication flow path 1152 that forms a flow path between the first pneumatic line (L1), and is pressurized according to the driving of the pneumatic operation unit 1151 to block the communication flow path 1152 The switching portion 1151 and the switching portion 1151 may include a second blocking elastic body 1153 that applies elastic force to the switching portion 1151 along a direction facing the pressing portion 1151.

The communication flow path 1152 communicates the first pneumatic line L1 in an initial state in which the pressing force is not applied to the blocking switch 1152, but when the pressing force is applied to the blocking switch 1152, the first pneumatic line L1 Can block communication. For example, the communication flow path 1152 may block the flow path of the first pneumatic line L1 by blocking the flow path or being spaced from the first pneumatic line L1 according to the movement of the switching unit 1151.

For example, the communication flow path 1152 may be formed as a flow passage passing through the switching portion 1151, and when the switching portion 1151 is pressed, the communication flow path 1152 is spaced apart from the first pneumatic line L1 Supply of air pressure to the air motor M can be blocked.

The switching unit 1151 may be pressurized according to the driving of the pneumatic operation unit 1151 to block the communication flow path 1152. For example, the switching unit 1151 may be pressed in a state of being contacted by the pressing unit 11511. For example, the switching unit 1151 may be relatively moved by being pressed from the outside, and at the same time, the communication channel 1152 may be blocked.

For example, the direction in which the pressing portion 11511 and the switching portion 11521 are translated may be on the same line.

For example, when an external force is applied to the switching unit 1151 and the switching unit 1151 reaches a certain limit position, the contact point of the internal pneumatic path is switched to switch between the pneumatic source 114 and the air motor M. It can cut off the supply of pneumatic.

The second blocking elastic body 1153 may apply an elastic force to the switching portion 1151 along the direction in which the switching portion 1151 faces the pressing portion 1151. For example, the second blocking elastic body 1153 may be a spring.

For example, the second blocking elastic body 1153, when the pressing portion 11511 advances and presses and moves the switching portion 1151, forms a load that resists it, thereby applying the pneumatic pressure applied to the pneumatic operation portion 1151 When this is released and the pressing portion 11511 retracts from the switching portion 1151, the switching portion 1151 moves in a direction closer to the pressing portion 11511 through the elastic restoring force of the second blocking elastic body 1153, and applies a pressing force. It can return to the position of the initial state which is not authorized.

The pneumatic control unit 1153 is installed on the second pneumatic line L2 between the pneumatic source 114 and the pneumatic operation unit 1151 to control the amount of pneumatic pressure supplied to the pneumatic operation unit 1151. Accordingly, it is possible to adjust the length of the set time required for the pressurizing unit 1151 to press the switching unit 1151 of the blocking switch 1152 based on the initial state in which the pneumatic pressure of the pneumatic source 114 starts to be applied.

For example, the pneumatic control unit 1153 may include a control valve capable of controlling the size of the flow path, the flow rate, or the size of the pneumatic pressure.

In the initial state in which the air pressure of the pneumatic source 114 starts to be applied, as shown in FIG. 5, the switching unit 1151 may not be in contact with the pressing unit 1151, and the blocking switch 1152 may include the first pneumatic line L1 ) To allow air pressure to be applied toward the air motor M.

Thereafter, as shown in FIG. 6, the set time exceeds, so that air pressure is supplied to the inner space 1113 of the pneumatic operation unit 1151 so that the pressurizing unit 1151 moves the switching unit 1151 of the blocking switch 1152 to pressurize. In the case, by blocking the connection between the first pneumatic line (L1) it is possible to block the pneumatically supplied to the air motor (M).

Thereafter, when the supply of air pressure from the pneumatic source 114 is stopped, the pressurizing portion 1151 returns to the initial position again, and similarly, the switching unit 1121 also returns to the initial state position, thereby providing the first pneumatic pressure. The pneumatic connection of the line L1 can be made again.

In summary, the shut-off switch 1152 maintains the first supply line L1 in communication for a set period of time from the time when the air pressure starts to be applied from the pneumatic source 114 to continuously provide air pressure to the motor M. Can. However, when the set time is exceeded, the blocking switch 1152 may be pressurized to block communication of the first supply line L1, thereby blocking air pressure supplied to the air motor M.

As a result, based on the initial state, the pneumatic pressure can be supplied only for a set time, which means that the operating part 12 and the handle 922 including the rotating shaft S can be rotated in the open direction only for the set time. It may mean, and at the same time, after the set time is exceeded, it may mean that rotation in the opening direction of the operation unit 12 and the handle 922 is stopped.

Therefore, according to the pneumatic shut-off unit 115 according to an embodiment, the pneumatic delay shut-off valve shutter 1 is mounted on the handles 922 of various standards, each of which has a different rotational driving range, so that the handles 922 are opened. Even if it rotates, rotation can be stopped after a preset time. Through this, by continuously applying the rotational force and torque even after the handle 922 is already rotated to reach the maximum opening point, damage to the pneumatic delay blocking valve shutter 1 including the handle 922 and the control unit 12 And excessive loads that may cause failure can be prevented.

7 is a perspective view of an operation unit according to an embodiment, FIG. 8 is an exploded perspective view of an operation unit according to an embodiment, and FIGS. 9 to 12 are views showing an operation configuration of the operation unit according to an embodiment.

7 to 12, the operation unit 12 according to an embodiment may be rotated by the driving unit 11 in a state in which the handle 922 is gripped to rotate the handle 922 in an open direction or a closed direction. have. For example, the upper side of the operation unit 12 may be connected to the rotation axis S of the driving unit 11 and rotated, and the lower side of the operation unit 12 may receive and grip a portion of the handle 922.

For example, the operation unit 12 may include a differential rotation unit 123 and a handle receiving unit 124.

For example, the handle receiving portion 124 may include a gripping space 1241 and a through hole 1242.

The gripping space 1241 may be a space accommodating the lower handle 922 in a direction parallel to the rotation axis S. For example, the gripping space 1241 may have a shape in which the circumferential shape of the inner wall matches the circumferential shape of the handle 922 according to the shape of the handle 922 to be mounted. For example, the shape of the inner wall of the gripping space 1241 may have a shape formed by radially spaced apart portions of the inner portion of the handle receiving portion 124 to increase the radius of the inner wall.

The through hole 1242 may be a hole formed through the inner wall of the gripping space 1241 in a direction parallel to the rotation axis S. For example, at least a portion of the button portion 1235 of the differential rotation portion 123 may pass through the through hole 1242 from the upper side of the handle receiving portion 124 in a downward direction and protrude into the gripping space 1241. .

The differential rotation part 123 is installed on the upper side of the handle accommodation part 124 to transmit the rotational force of the rotation axis S to the handle accommodation part 124, but the rotation axis S according to the rotation direction of the rotation axis S ), the rotation angle of the handle receiving portion 124 may be changed.

For example, the differential rotation part 123 may be formed integrally with the handle receiving part 124.

According to the differential rotation unit 123, while the rotating shaft S rotates the handle 922 to the maximum opening point along the opening direction based on the state where the handle 922 is rotated to the maximum closing point, the rotating shaft ( S) can be rotated by the first set angle in the open direction relative to the handle receiving portion 124.

Conversely, while the rotating shaft S rotates the handle 922 in the closing direction up to the maximum closing point based on the state in which the handle 922 is rotated to the maximum opening point, the rotating shaft S has a handle receiving portion ( With respect to 124), it can rotate by a second set angle smaller than the first set angle in the open direction.

For example, the differential rotation unit 123 may include a first upper plate 1231, a first lower plate 1232, a first rotation support unit 1233, a first torsion spring 1234, and a button unit 1235. Can.

For example, the first upper plate 1231 may be connected to the rotating shaft S and rotated to have a vertical circular cross section.

The first upper plate 1231 may be connected to the rotating shaft S and rotated. For example, the first upper plate 1231 may have a circular cross section perpendicular to the rotation axis S. For example, the first upper plate 1231 may be integrally formed with the rotation axis S.

For example, the first upper plate 1231 may include a first upper protrusion 12311 formed to protrude downward from the first upper plate 1231.

The first upper protrusion 12311 may have an arcuate shape that extends at a constant angle in the circumferential direction based on the circular center of the first upper plate 1231.

The lower side of the first lower plate 1232 is coupled to the handle receiving portion 124, and the upper side can be rotatably coupled to the first upper plate 1231. For example, the first lower plate 1232 may have a circular cross section perpendicular to the rotation axis S.

For example, the first lower plate 1232 may include a first lower protrusion 12321 and a button hole 12322 that protrude upward from the first lower plate 1232.

The button hole 12322 may be formed in a portion of the circular first lower plate 1232 where the first lower protrusion 12321 is not formed. For example, the button hole 12322 may overlap and communicate with the through hole 1242 of the handle receiving portion 124 in a vertical direction. For example, the width of the spaced apart button hole 12322 from the center of the first lower plate 1232 is within the range of the width formed by the first upper protrusion 12311 from the center of the first upper plate 1231. It can be.

For example, the first upper plate 1231 and the first lower plate 1232 may be coupled in the vertical direction so that each of the first upper protrusion 12311 and the first lower protrusion 12321 do not overlap each other in the vertical direction. You can. In this case, the first upper plate 1231 and the first lower plate 1232 may be rotated with respect to each other within a range in which the respective first upper protrusion 12311 and the first lower protrusion 12321 do not interfere. .

For example, in at least some of the ranges in which the first upper plate 1231 is rotatable relative to the first lower plate 1232, the first upper protrusion 12311 is a button hole 12322 and a direction of the rotation axis S Can be nested with

For example, the first upper plate 1231 rotates as much as possible in the closing direction with respect to the first lower plate 1232 so that one side of each of the first upper protrusion 12311 and the first lower protrusion 12321 interferes with each other. In this case, the first upper protrusion 12311 may overlap the button hole 12322 in the vertical direction to shield the upper side of the button hole 12322.

For example, the angle at which the button hole 12322 is spaced from one side of the first lower protrusion 12321 relative to the circular center of the first lower plate 1232 is the angle of the first upper protrusion 12311 in an arch shape. It can be smaller.

The first rotation support unit 1233 may support mutual rotational movements such that the first upper plate 1231 and the first lower plate 1232 can be rotated based on their respective centers. For example, the first rotation support portion 1233 may be integrally formed with the first upper plate 1231 or the first lower plate 1232.

The first torsion spring 1234 may be installed between the first upper plate 1231 and the first lower plate 1232. The first torsion spring 1234 may apply an elastic force such that the first upper plate 1231 rotates in a closing direction with respect to the first lower plate 1232.

For example, both ends of the first torsion spring 1234 may be fixed to the first upper plate 1231 and the first lower plate 1232, respectively. For example, both ends of the first torsion spring 1234 may be supported by being pressed between the first upper protrusion 12311 and the first lower protrusion 12321.

When the first upper plate 1231 rotates in the open direction with respect to the first lower plate 1232, the first torsion spring 1234 is compressed to apply elastic force in the closing direction to the first upper plate 1231. Can.

The button portion 1235 may be slidably installed in at least a portion of the button hole 12322 and the through hole 1242 of the handle receiving portion 124 in a vertical direction, that is, in a direction parallel to the rotation axis S. . For example, at least a portion of the lower side of the button portion 1235 may protrude into the gripping space 1241 by passing through the through hole 1242 downward.

For example, the button portion 1235 may include a pressing pin 12351, a first spring 12353, a protruding pin 12352, and a second spring 12354.

The pressing pin 12351 passes through the button hole 12322 of the first lower plate 1232 and the through hole 1242 of the handle receiving portion 124 so that at least a portion of the lower side can protrude into the gripping space 1241. It may be a member to be formed.

For example, the pressing pin 12351 may be slid upward by being pressed by the handle 922 inserted into the handle receiving portion 124. For example, even if the lower side of the pressing pin 12351 is maximally pushed upward by the handle 922, the pressing pin 12351 does not protrude to the upper side of the button hole 12322 or is projected to the first upper protrusion 12311. It may not interfere.

The first spring 12353 may apply an elastic force in a direction in which the pressing pin 12351 protrudes below the handle receiving portion 124. For example, the first spring 12353 may be installed in the button hole 12322 or through hole 1242 to be wrapped around the circumference of the pressure pin 12351.

According to the first spring 12353, when a separate external force is not applied to the pressure pin 12351, an elastic force can be applied so that the lower side of the pressure pin 12351 can always protrude into the gripping space 1241.

The protruding pin 12352 may be installed to be slidable in the vertical direction in a space recessed from the upper side of the pressing pin 12351.

The second spring 12354 is installed in a space recessed from the upper side of the pressing pin 12351 to apply an elastic force in a direction in which the protruding pin 12352 moves away from the pressing pin 12351, that is, an upward direction.

According to the second spring 12354, when a separate external force is not applied to the protruding pin 12352, an elastic force can be applied so that the protruding pin 12352 protrudes upward from the pressing pin 12351.

For example, when the pressing pin 12351 is not pressed by the handle 922, the protruding pin 12352 protruding upward of the pressing pin 12351 also does not protrude or protrude above the button hole 12322. It may not interfere with the first upper projection (12311).

9 to 12, an operation process of the differential rotation unit 123 may be specifically described.

First, FIGS. 9A and 9B show a state before mounting the handle receiving portion 124 to the handle 922.

For example, in a state prior to attaching the handle receiving portion 124 to the handle 922, the first upper plate 1231 is closed with respect to the first lower plate 1232 by the first torsion spring 1234. It can be arranged in the rotated state as much as possible in the clockwise direction (Fig. 9), and accordingly, the first upper protrusion 12311 and the first lower protrusion 12321 in the state where one side of each other interferes with the button hole 12322 The first upper protrusion 12311 may overlap the vertical direction.

Therefore, as shown in FIG. 9B, since the pressing force from the upper side and the lower side is not applied to the button portion 1235, the pressing pin 12351 protrudes into the gripping space 1241 and moves upward to the pressing pin 12351. The protruding protruding pin 12352 may not interfere with the first upper protruding portion 12311 even if it does not protrude or protrude to the upper side of the button hole 12322.

For example, the valve shutter 1 of the pneumatic delay blocking method may be in an initial state in which the rotational force in the open direction is not applied to the rotational axis S before the operation unit 12 is mounted on the handle 922.

Thereafter, as shown in FIG. 10, when the handle receiving portion 124 is mounted on the handle 922, the upper end of the handle 922 contacts the lower side of the pressing pin 12351 to press the pressing pin 12351 upward. You can.

In this case, the pressing pin 12351 is slid upward by the handle 922, but does not protrude upward of the button hole 12322, and the protruding pin 12322 may protrude upward of the button hole 12322, but the button It is pressed by the first upper protrusion 12311 located on the upper side of the hole 12322 and slides into the inside of the pressing pin 12351, and at the same time, the second spring 12354 can be compressed in the vertical direction.

After mounting the operation portion 12 including the handle receiving portion 124 to the handle 922, the operation portion 12 is opened through the rotation axis S to open the cylinder head 92 as shown in FIGS. 11A and 11B. It can be rotated in the direction (counterclockwise in Fig. 11A).

The rotational force transmitted from the rotation axis S may allow the first upper plate 1231 to rotate relative to the first lower plate 1232 in the open direction.

Relative rotation of the first upper plate 1231 performed along the opening direction is performed until the other sides of the first upper protrusion 12311 and the first lower protrusion 12321 interfere with each other or become as close as possible. At the same time, at the same time, the first torsion spring 1234 having both ends installed between the first upper protrusion 12311 and the first lower protrusion 12321 may be compressed.

In this case, an angle at which the first upper plate 1231 is relatively rotated may be a first set angle.

For example, when the first upper plate 1231 is rotated relative to the first lower plate 1232 by a specific angle less than the first set angle, the first upper protrusion 12311 is a button hole ( 12322), the upper side of the button hole 12322 may no longer be shielded. Therefore, as illustrated in FIG. 11B, the protruding pin 12352 of the button portion 1235 may protrude upward from the button hole 12322 by the elastic force of the compressed second spring 12354.

Thereafter, as shown in FIG. 12A, in order to rotate the handle 922 in the closing direction up to the maximum closing point, the manipulation unit 12 may be rotated in the closing direction through the rotation axis S.

The rotational force transmitted from the rotational axis S by the compressed rotational elastic body 111 may rotate the first upper plate 1231 relative to the first lower plate 1232 in a closed direction.

Relative rotation of the first upper plate 1231 performed along the closing direction may be performed until the first upper protrusion 12311 interferes with the protruding pin 12352 protruding upward of the button hole 12322.

In this case, the angle at which the first upper plate 1231 is relatively rotated may be a second set angle, and the second set angle may be smaller than the first set angle.

Thereafter, when the handle receiving portion 124 is separated from the handle 922, the pressing pin 12351 is no longer pressed by the handle 922, so the pressing pin is applied by the elastic force of the compressed first spring 12353 (12351) may be slid down again and protrude toward the gripping space 1241 again.

According to the above structure, when the control unit 12 is rotated in the open direction through the valve shutter 1 of the pneumatic delay blocking method, the differential rotation unit 123 is a handle receiving unit since it is self-rotating by a first set angle. The rotational force in the open direction can be transmitted to 124.

Then, when the operation portion 12 is rotated in the closed direction through the pneumatic delay blocking method valve shutter 1, the differential rotation portion 123 accommodates the handle since it rotates itself by a second set angle smaller than the first set angle. The rotational force in the closing direction can be transmitted to the unit 124.

According to the differential rotation unit 123 according to an embodiment, when the handle receiving unit 124 rotates the handle 922 for the opening and closing operation of the cylinder head 92, the handle receiving unit 124 is the handle 922 Since the angle at which the handle 922 is rotated in the closing direction can be formed larger than the angle at which the rotation is rotated in the open direction, it is possible to ensure a reliable closing of the valve.

Although the embodiments have been described by the limited drawings as described above, a person skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in a different order than the described method, and/or components such as the structure, device, etc. described may be combined or combined in a different form from the described method, or may be applied to other components or equivalents. Even if replaced or substituted by, appropriate results can be achieved.

Claims (10)

An operation portion for gripping the handle of the valve;
A rotating shaft connected to the operation unit;
An air motor connected to the rotating shaft to rotate the rotating shaft in a direction in which the handle is opened;
A pneumatic source for supplying air pressure to the air motor; And
Pneumatic delay cutoff valve shutter comprising a pneumatic shut-off unit that is installed between the pneumatic source and the air motor to block air pressure supplied to the air motor after a predetermined time.
According to claim 1,
The pneumatic block,
A first pneumatic line connected between the pneumatic source and the air motor;
A blocking switch installed on the first pneumatic line and selectively blocking the first pneumatic line according to whether a pressing force is applied from the outside; And
A pneumatic delay shut-off valve shutter comprising a pneumatic actuating part which is driven through the air pressure supplied from the pneumatic source and presses the shut-off switch.
According to claim 2,
The blocking switch,
A communication flow path forming a flow path between the first pneumatic lines; And
It includes a switching unit that is pressed according to the driving of the pneumatic operation unit to block the communication flow path,
The pneumatic operation unit,
An inner space receiving air pressure supplied from the pneumatic source; And
A pneumatic delay blocking valve shutter comprising a pressing portion moving toward the switching portion by pneumatic pressure formed in the interior space.
The method of claim 3,
The pneumatic operation unit,
The pressing portion further includes a first blocking elastic body that applies an elastic force to the pressing portion along a direction away from the switching portion,
The blocking switch,
The switching portion further includes a second blocking elastic body that applies an elastic force to the switching portion along a direction facing the pressing portion,
When air pressure is not applied to the blocking switch and the pneumatic operation unit, the pressurizing unit does not pressurize the switching unit and the communication flow path is not blocked by the switching unit.
The method of claim 3,
The blocking switch,
A pneumatic delay shut-off valve shutter further comprising a variable vent portion capable of discharging a portion of the gas accommodated in the interior space to the outside and having an adjustable size of a discharge flow path.
The method of claim 3,
The pneumatic block,
A second pneumatic flow path connected between the pneumatic source and the shut-off switch; And
A pneumatic delay cutoff valve shutter further installed in the second pneumatic flow path and further comprising a pneumatic adjustment portion to adjust the cross-sectional area of the flow path.
According to claim 2,
A rotating elastic body that applies elastic force to rotate the rotating shaft in a closing direction in which the handle is closed; And
Further comprising a stopper that is driven through the air pressure supplied from the pneumatic source to prevent the rotation axis from rotating in the closed direction Pneumatic delay shut-off valve shutter.
The method of claim 7,
The stopper,
When receiving pneumatic pressure, the one-way clutch method prevents rotation of the rotating shaft in the closed direction, and rotation in the open direction permits a pneumatic delay blocking valve shutter.
According to claim 1,
Further comprising a rotating elastic body for applying an elastic force to rotate the rotating shaft in the closing direction in which the handle is closed,
The operation unit,
A handle accommodating part which contacts the upper side of the handle to rotatably accommodate the handle; And
It is installed on the upper side of the handle receiving portion to transmit the rotational force of the rotating shaft to the handle receiving portion, comprising a differential rotating portion to vary the rotation angle of the rotating shaft, the rotation angle of the handle receiving portion in accordance with the rotation direction of the rotating shaft Pneumatic delay shutoff valve shutter.
The method of claim 9,
While the handle is rotated from the fully closed state to the state in which the rotating shaft opens the handle to the maximum, the rotating shaft rotates relatively by a first set angle in the opening direction with respect to the handle receiving portion,
A second set angle smaller than a first set angle in the closing direction with respect to the handle receiving portion, while the handle rotates from a state of maximum opening to a state in which the rotation axis closes the handle to the maximum. Pneumatic delay shutoff valve shutter that rotates relatively as much.

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