JP2021011937A - Valve drive device - Google Patents

Abstract

To provide a valve drive device that can be carried in a divided state, and facilitates assembling work.SOLUTION: A valve drive device 10 that has a manual handle 11, and a power transmission mechanism 12 transmitting rotation driving force given to the manual handle 11 to an output portion, drives an external valve body. The manual handle 11 is equipped with a rotator 15 that rotates about a virtual axis V and gives rotation driving force to the coupled power transmission mechanism 12, and a grip unit 16 detachably attached to the rotator 15 and gripped by a person.SELECTED DRAWING: Figure 1

Description

The present invention relates to a valve drive device for driving a connected valve body.

The inlet / outlet of the fluid (liquid and gas) of the storage facility, the pipe through which the fluid flows, and the like are provided with a valve body for adjusting the flow of the fluid and a valve drive device for applying a driving force to the valve body. Some valve driving devices include a manual handle and drive the valve body based on a rotational force given to the manual handle by a person, and specific examples thereof are described in Patent Documents 1 and 2.
By the way, the valve drive device may be installed in an underground space connected to the ground by a manhole (vertical hole), and in this case, it is necessary to bring the valve drive device into the underground space via the manhole. For that purpose, it is required to design the valve drive device so as to be able to pass through the manhole, and to bring the valve drive device into the underground space in a divided state and assemble it in the underground space.

Japanese Unexamined Patent Publication No. 2013-204681 Japanese Unexamined Patent Publication No. 2016-10833

In this regard, since the manual handle needs to be large enough to allow a person to rotate on the principle of leverage, the entire valve drive device including the manual handle depends on the magnitude of the driving force to be generated by the valve drive device. May not be large enough to pass through the manhole.
Then, when the manual handle and the valve drive device body are separated and brought into the underground space, and the manual handle is attached to the valve drive device body in the underground space, it takes a long time due to bad odors, etc. Not suitable for underground spaces that cannot.

Further, as described in Patent Document 2, if the manual handle is rotated by using a special tool, the size of the entire valve drive device can be passed through the manhole by adopting the compact manual handle. However, in this case, it becomes necessary to store and manage the tool separately from the valve drive device.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a valve drive device that can be carried in a divided state and is easy to assemble.

The valve drive device according to the present invention according to the above object has a manual handle and a power transmission mechanism for transmitting a rotational driving force applied to the manual handle to an output unit to drive an external valve body. In the device, the manual handle is detachably attached to a rotating body that rotates about a virtual axis to apply the rotational driving force to the connected power transmission mechanism, and is gripped by a person. It is equipped with a gripping unit.

Since the valve drive device according to the present invention includes a rotating body in which a manual handle applies a rotational driving force to a connected power transmission mechanism, and a gripping unit that is detachably attached to the rotating body and is gripped by a person. The valve drive device can be carried with the gripping unit not attached to the rotating body. Further, the connection between the manual handle (rotating body) and the power transmission mechanism is larger than the attachment of the gripping unit to the rotating body, and it goes without saying that the entire manual handle is heavier than the gripping unit, so the gripping unit is rotated. It is easier to attach to the body than to attach the entire manual handle to the valve drive body.

It is a front view of the valve drive device which concerns on one Embodiment of this invention. It is a top view of the valve drive device. It is explanatory drawing of the valve drive device. (A) and (B) are a front view and a plan view of the manual handle according to the first modification, respectively. It is a front view of the manual handle which concerns on the 2nd modification.

Subsequently, an embodiment embodying the present invention will be described with reference to the attached drawings, and the present invention will be understood.
As shown in FIGS. 1 and 2, the valve drive device 10 according to the embodiment of the present invention includes a manual handle 11 and a power transmission mechanism 12 that transmits a rotational driving force applied to the manual handle 11 to an output unit. It is a device that drives an external valve body (hereinafter referred to as "external valve body"). The details will be described below.

As shown in FIGS. 1 and 2, the valve drive device 10 has a housing 13 in which the power transmission mechanism 12 is provided inside, and a motor 14 fixed to the housing 13. The motor 14 is connected to a power transmission mechanism 12, and the driving force generated by the operation of the motor 14 is transmitted to an output unit (for example, a gear) via the power transmission mechanism 12, output from the output unit, and externally. Activate the valve body. The power transmission mechanism 12 is composed of gears, worms, worm wheels, and the like.
The external valve body is provided in a pipe or the like through which a fluid flows, and adjusts the flow of the fluid by operating (specifically, rotating or moving).

The manual handle 11 includes a boss (an example of a rotating body) 15 attached to the housing 13 and applying a rotational driving force to the connected power transmission mechanism 12, and a gripping unit 16 attached to the boss 15. The boss 15 is a disk-shaped exposed piece 17 exposed from the housing 13 and is provided continuously to the exposed piece 17 so as to be aligned with the exposed piece 17 and is an annular insertion inserted into the housing 13. It has a piece 18, and is rotatably attached to the housing 13 about a virtual axis V, which is the axis of the exposed piece 17 and the insertion piece 18. The exposed piece 17 is formed with a plurality of female screw portions 19 provided at equal intervals in the circumferential direction of the exposed piece 17 from the outer peripheral edge of the exposed piece 17 toward the center of the exposed piece 17 (that is, a boss). 15 includes a female screw portion 19).

The gripping unit 16 is mainly composed of a plurality of (four in the present embodiment) bar members 20, and each bar member 20 has the same length and is male on one end side as shown in FIGS. 1 and 3. A screw portion 21 is provided. The other end side of the bar 20 is a portion that is grasped by a person when the manual handle 11 is rotated. As shown in FIGS. 1 and 2, each bar 20 has a male screw portion 21 screwed (fitted) into the female screw portion 19 and attached to the boss 15 in the radial direction of the exposed piece 17. It is fixed in a state of being arranged in the direction perpendicular to the virtual axis V). That is, the gripping unit 16 includes a male screw portion 21 that is screwed into the female screw portion 19 of the boss 15, and is detachably attached to the boss 15.

In the present embodiment, the valve driving device 10 is carried into the underground space via the manhole with the plurality of rods 20 (grip unit 16) removed, and then the plurality of rods 20 are carried in the underground space. The work of attaching to the boss 15 is performed. Therefore, in the present embodiment, the manhole that the rod member 20 cannot pass through by the valve driving device 10 attached to the boss 15 can also pass through.

Further, in the gripping unit 16, a portion having the longest distance to the virtual axis V (a portion located at the position farthest from the virtual axis V, here, in a state where all of the plurality of rods 20 are attached to the boss 15). The other end of each bar 20) is virtual compared to the part where the distance to the virtual axis V of the boss 15 is the longest (the part farthest from the virtual axis V, here, the outer peripheral end of the exposed piece 17). Since the distance to the shaft V is long, the valve drive device 10 from which the bar member 20 has been removed has a great benefit of being able to pass through a narrow space as compared with the valve drive device 10 to which the bar member 20 is attached.

Since it is only necessary to screw the male screw portion 21 into the female screw portion 19 to attach each bar 20 to the boss 15, no tools or equipment is required, and the plurality of bar 20 (grip unit 16) can be attached. Installation can be done easily in a short time. On the other hand, it takes a long time to connect the boss 15 to the power transmission mechanism 12, and it is necessary to use tools and the like. Therefore, the work of connecting the boss 15 to the power transmission mechanism 12 is performed in the underground space. Not having to do this greatly contributes to reducing the work load. Further, by attaching a bar having a length different from that of the bar 20 to the boss 15 instead of the bar 20, it is possible to cope with the output of the required torque from the valve drive device.

Here, the manual handle only needs to include a rotating body and a gripping unit that is detachably attached to the rotating body, and does not have to have the same structure as the manual handle 11. Instead of the manual handle 11, for example, a manual handle 30 as shown in FIGS. 4A and 4B or a manual handle 40 as shown in FIG. 5 may be adopted.

As shown in FIGS. 4A and 4B, the manual handle 30 has a boss (an example of a rotating body) 33 mainly composed of an exposed piece 31 and an insertion piece 32, and a grip that is detachably attached to the boss 33. It includes a unit 34. The gripping unit 34 includes a square annular locking piece 36 having an opening 35 formed in the center, and rod-shaped pieces 37 and 38 connected to both sides of the locking piece 36 and integrated with the locking piece 36. The boss 33 is provided with a convex portion 39 corresponding to the opening 35. The gripping unit 34 is attached to the boss 33 by fitting the convex portion 39 into the opening 35.

As shown in FIG. 5, the manual handle 40 has a boss (an example of a rotating body) 42 having a structure similar to that of the boss 33 and having a convex portion 41, and a gripping unit 44 having an opening 43 corresponding to the convex portion 41. have. The gripping unit 44 includes a square annular locking piece 45 on which the opening 43 is formed, and a rod-shaped piece 46 connected to the locking piece 45 and integrated with the locking piece 45, and is convex to the opening 43. The portion 41 is fitted and attached to the boss 42.

Further, as shown in FIGS. 1 to 3, the valve drive device 10 has a state in which the manual handle 11 (that is, the boss 15) is not connected to the power transmission mechanism 12 and a state in which the valve drive device 10 is connected to the power transmission mechanism 12. , The switching is performed by a human operation of the switching lever 22 provided in the valve driving device 10. The manual handle 11 can apply a rotational driving force to the power transmission mechanism 12 in a state of being connected to the power transmission mechanism 12, and a rotational driving force to the power transmission mechanism 12 in a state of being unconnected to the power transmission mechanism 12. Can't give.
In the present embodiment, an interlock mechanism is provided in the housing 13 to prevent the motor 14 from operating while the manual handle 11 is connected to the power transmission mechanism 12.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions that do not deviate from the gist are within the scope of the present invention.
For example, the gripping unit may be provided with a female screw portion, the rotating body may be provided with a male screw portion screwed into the female screw portion, and the gripping unit may be detachably attached to the rotating body. Further, the rotating body may be provided with an opening, the gripping unit may be provided with a convex portion to be fitted into the opening, and the gripping unit may be detachably attached to the rotating body. Further, the gripping unit and the rotating body can be designed so that the gripping unit can be detachably attached to the rotating body by bolts and nuts.

Further, the portion of the gripping unit attached to the rotating body at the position farthest from the virtual axis may have a shorter distance to the virtual axis than the portion at the position farthest from the virtual axis of the rotating body. Even in this case, depending on the size and shape of the gripping unit, the valve drive device from which the gripping unit has been removed can pass through a space in which the valve drive device cannot pass while the gripping unit is attached.

10: Valve drive device, 11: Manual handle, 12: Power transmission mechanism, 13: Housing, 14: Motor, 15: Boss, 16: Gripping unit, 17: Exposed piece, 18: Insert piece, 19: Female screw part, 20: Bar, 21: Male screw, 22: Switching lever, 30: Manual handle, 31: Exposed piece, 32: Insert piece, 33: Boss, 34: Gripping unit, 35: Opening, 36: Locking piece , 37, 38: rod-shaped piece, 39: convex part, 40: manual handle, 41: convex part, 42: boss, 43: opening, 44: gripping unit, 45: locking piece, 46: rod-shaped piece, V: Virtual axis

Claims (4)

In a valve drive device that has a manual handle and a power transmission mechanism that transmits a rotational driving force applied to the manual handle to an output unit to drive an external valve body.
The manual handle includes a rotating body that rotates about a virtual axis to apply the rotational driving force to the connected power transmission mechanism, and a gripping unit that is detachably attached to the rotating body and is gripped by a person. A valve drive device characterized by being provided with. In the valve driving device according to claim 1, the portion of the gripping unit attached to the rotating body at the position farthest from the virtual axis is the portion of the rotating body farthest from the virtual axis. , A valve drive device characterized by a long distance to the virtual axis. The valve driving device according to claim 1 or 2, wherein either one of the gripping unit and the rotating body is provided with a female screw portion, and the other is provided with a male screw portion screwed into the female screw portion. Valve drive device. The valve according to claim 1 or 2, wherein either one of the gripping unit and the rotating body is provided with an opening, and the other is provided with a convex portion to be fitted into the opening. Drive device.

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