JPH0212372Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an opening display device for water control valves installed in water pipes, etc., and particularly to valves that protect water control valves buried underground. This invention relates to a device suitable for being incorporated into a housing.

[Conventional technology]

Generally, water control valves installed in water pipes are buried underground and protected by valve housings. A boss provided at the lower end of the operating shaft is fitted into a cap provided at the upper end of the valve shaft of the water control valve, and a boss provided at the lower end of the operating shaft is fitted, for example, in a T-shape. It has a structure with a shaped handle. Then, by removing the lid provided on the upper end surface of the valve case and operating the handle,
The water control valve can be opened and closed by rotating the valve shaft of the water control valve via the operating shaft.

[Problem that the invention attempts to solve]

Although there are butterfly-shaped water control valves, most of these water control valves are gate valves, and the operation shaft must be turned several times to open and close them. Therefore, when operating from the ground, it is easy to forget how many times the water control valve has been turned, and it is difficult to make fine adjustments to the opening of the water control valve.

The purpose of this invention is to display the opening in an easy-to-see manner so that the operator can easily fine-tune the opening of the water control valve, and to provide a control that is easy to incorporate into the valve housing that protects the water control valve. The object of the present invention is to obtain an opening display device for a water valve.

[Means for solving problems]

The opening degree display device for a water control valve of the present invention includes a device body that rotatably penetrates and supports a rotary operating shaft for opening and closing the water control valve, and is fixedly supported at the upper part of the valve housing, and the device body. a rotary disk rotatably supported by the shaft body and fitted and fixed to the shaft body and having a spiral groove formed on its upper surface; a transmission body having a guided part that is slidably engaged in a spiral groove of the transmission body and also has a rack part, and a pinion part that is rotatably fitted to the shaft body and meshed with the rack part of the transmission body. The device is equipped with an indicator having an indicator, a pointer fixed to the indicator, and an opening display plate positioned below the pointer and supported by the device main body.

[Effect]

In the water control valve opening display device of the present invention, when the operating shaft is rotated to adjust the opening of the water control valve, the rotating disc fitted and fixed to the operating shaft rotates together. Accordingly, the transmission body, which is movably supported by the device main body and whose guided portion is slidably engaged with the spiral groove of the rotary disk, moves in the radial direction of the rotary disk, An indicator with a pinion meshed with the rack of the transmission body rotates at a lower speed than the shaft, and a pointer fixed to the indicator rotates on the opening display plate to control the opening. This displays the opening degree of the water valve.

〔Example〕

The structure of one embodiment of the water control valve opening display device of the present invention will be explained with reference to FIGS. 1 to 3.

As shown in Fig. 3, this device is built into a valve housing 2 that protects a water control valve 1 buried underground, and displays the opening degree of the water control valve 1 near the ground surface 3. be.

The water control valve 1 is installed in a water pipe 4 buried underground, and as it rotates, the water control valve 1
A cap body 6 is provided at the upper end of the valve shaft 5 that changes the opening degree of the valve.

The valve housing 2 also includes a receiving plate 7 through which the valve shaft 5 passes through the central portion, a cylindrical housing body 8 supported at the center of the upper surface of the receiving plate 7, and a housing body 8.
It consists of a lid holder 9 fitted to the upper end of the
A lid body 10 is detachably provided in the upper opening of the lid holder 9 located on the ground surface 3.

Reference numeral 11 denotes a rotary operation shaft body, and a boss portion 12 is provided at the lower end of the shaft body, and this boss portion 12 is connected to the water control valve 1.
It is fitted and engaged with the cap body 6 of. In addition, at the upper end of this shaft body 11 located near the ground surface 3,
A cap body 13 for operation is attached. Note that a handle may be attached instead of this cap body 13. Further, on the outer peripheral surface of this shaft body 11, located below the cap body 13,
A key joint or gear joint fitting part 14 that is engaged in the rotational direction is formed, and a plurality of O-rings 15 are embedded and fitted at appropriate positions across this fitting part 14. There is.

Reference numeral 21 denotes the main body of the apparatus, which is formed in the shape of a thin box with a circular planar shape and an open top. The device main body 21 has a through hole 22 formed in its center, and a cylindrical portion 23 that surrounds the through hole 22 and is integrally provided vertically on the lower surface. Further, a fitting step portion 24 is formed at the upper opening edge of the device main body 21 .

Further, 26 is a support body, which is the housing body 8 of the valve housing 2.
It consists of a disk portion 27 having an outer diameter approximately equal to the inner diameter of the disk portion 27, and support portions 28 formed upwardly projecting from a plurality of locations on the peripheral edge of the disk portion 27.
A through hole 29 is formed in the center of 7. In this support body 26, with the shaft body 11 rotatably passed through the through hole 29, the outwardly bent upper end portion of the support portion 28 is attached to the housing body 8 by a screw 30. By being fixed to the upper edge, it is attached to the upper end inside the housing body 8. In this state, the O-ring 15 of the shaft body 11 is in contact with the circumferential surface of the through hole 29.

The device main body 21 has its through hole 22
The shaft body 11 is rotatably penetrated through the cylindrical portion 2.
3 is attached to the support body 26 with screws 31, with the lower surface of the support body 26 in contact with the disc portion 27 of the support body 26. Further, in this state, the O-ring 15 of the shaft body 11 is in contact with the circumferential surface of the through hole 22.

Further, a collar portion 32 is formed on the shaft body 11 in a state in which it is located within the cylindrical portion 23 of the device main body 21 and protrudes from the circumferential surface of the shaft body 11, thereby controlling the device of the shaft body 11. Vertical movement with respect to the main body 21 is restricted.

Reference numeral 36 designates a disk-shaped rotary disk, and the fitting portion 14 of the device main body 11 and a substantially circular fitting hole 37 are formed in the center thereof. Further, a spiral groove 38 is formed on the upper surface of the rotary disk 36 with the fitting hole 37 as the center. The rotary disk 36 is attached to the shaft 11 in a state where it is prevented from rotating by keying the fitting portion 14 of the shaft 11 into the fitting hole 37 thereof. and is rotatably supported within the device main body 21.

Reference numeral 41 denotes a transmitting body, which is formed into a substantially rectangular frame shape when viewed from above. The lower surface of one longitudinal end of the transmission body 41 is provided with a spiral groove 3 of the rotary disk 36.
A protruding guided portion 4 that is slidably engaged with 8.
2 is formed. Further, a rack portion 43 is formed on the inner circumferential surface of the transmission body 41 on one side in the transverse direction. The transmission body 41 has the shaft body 11 located inside thereof, and the guided portion 42.
is supported in the apparatus main body 21 so as to be movable only in the longitudinal direction (horizontal direction in the drawing) while being engaged with the spiral groove 38 of the rotary disk 36 . Also,
In this state, the center of the shaft body 11, that is, the rotating disc 36
A straight line connecting the center of rotation and the guided portion 42 is parallel to the rack portion 43.

Reference numeral 46 denotes a substantially cylindrical indicator, and a pinion portion 47 is formed at the lower part of the outer peripheral surface of the indicator. The indicator 46 is mounted on the shaft while the pinion portion 47 is engaged with the rack portion 43 of the transmission body 41 and the lower surface is slidably abutted on the rotary disk 36. 11 so as to be rotatable.

Reference numeral 51 denotes an opening display plate formed in a substantially annular shape, the central part of which is loosely fitted into the upper part of the indicator 46, and the peripheral part fitted into the fitting stepped part 24 of the device main body 21. It is attached to the main body 21 of the device by being A display (not shown) indicating the opening degree of the water control valve 1 is formed on the upper surface of the display board 51. This display board 51
An engaging recess 51a is formed on the lower surface of the engaging recess 51a in which the transmitting body 41 is slidably fitted and supported.

Further, a pointer 5 is provided at the upper end of the indicator 46 and faces the upper surface of the display board 51 with a small gap therebetween.
2 is fixed.

Further, reference numeral 56 denotes a transparent protective cover body, which is formed approximately in the shape of a disk, and has a through hole 57 in its center.
is formed. And this cover body 56
is attached to the upper surface of the device main body 21 with a screw 58, with the shaft 11 rotatably passing through the through hole 57 thereof. Further, in this state, the O-ring 15 of the shaft body 11 is in contact with the circumferential surface of the through hole 57. Then, the rotary disk 36, the transmission body 41, the indicator 46, the opening degree display plate 51
The pointer 52 is located in a space separated from the outside by the device main body 21 and the cover body 56, and is protected.

Next, the operation of this embodiment will be explained.

When adjusting the opening degree of water control valve 1, first open valve casing 2.
Open the lid 10. Next, by operating the cap body 13 of the shaft body 11 using a suitable tool, the valve shaft 5 of the water control valve 1 is rotated via this shaft body 11, and the opening degree of the water control valve 1 is adjusted. , adjust to an appropriate state between fully closed and fully open.

At this time, as the shaft body 11 rotates, the rotary disk 36 that is fitted and fixed to the shaft body 11 rotates. As the rotary disk 36 rotates, the guided portion 42 of the transmission body 41, which is supported so as to be movable only in the left and right direction, is slidably engaged with the spiral groove 38. As a result, the transmission body 41 is guided by the engagement recess 51a of the display board 51 and moves in the left-right direction by an amount corresponding to the amount of rotation of the rotary plate 36. Further, as the transmitting body 41 moves, the pinion portion 47 of the indicator 46 is engaged with the rack portion 43, so that the indicator 46 is moved to the transmitting body 4.
It rotates by an amount corresponding to the amount of movement of 1. Then, the rotation of the shaft body 11 is decelerated and transmitted to the indicator 46 via the transmission body 41, and while the shaft body 11 rotates from the fully closed state to the fully open state of the water control valve 1,
The indicator 46 rotates, for example, 120 degrees.

Then, the pointer 5 provided on this indicator 46
2 rotates on the display board 51, and the opening degree of the water control valve 1 is displayed.

Therefore, since the operator can clearly know the opening degree of the water control valve 1, the operator can accurately finely adjust the opening degree. Moreover, since this display device is provided at the upper end of the valve housing 2, the display is easy to see.

Note that the rotary plate 36 must be able to rotate and the transmission body 41 must be able to move left and right until the water control valve 1 is fully opened from the fully closed state. In order to do this, the number of turns of the spiral groove 38 of the rotating disc 36 must be at least large enough to allow the rotating disc 36 to rotate when the transmitting body 41 moves from fully closed to fully open. No.

This display device can be easily incorporated into the existing valve housing 2 by simply replacing the shaft with the shaft 11 having the fitting portion 14 and the like.

Further, as described above, this display device includes a disk-shaped rotary plate 36,
Since the frame-shaped transmitting body 41 and the disc-shaped display plate 51 are horizontally stacked, the entire device can be made thin and compact.

[Effect of idea]

According to the present invention, since the opening degree of the water control valve can be displayed, the operator can accurately fine-tune the opening degree of the water control valve based on the display. The structure uses a mechanical mechanism to slow down the rotation of the operating shaft to adjust the opening of the valve and displays the display, making the display easy to read and easy to integrate into an existing valve housing. , this device consists of a rotary disk that rotates together with the shaft, a deceleration transmission body that moves in the radial direction as the rotary disk rotates, and a transmission body that rotates around the shaft. Since the main component is the indicator that is displayed, the structure can be made thin and compact.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing one embodiment of the water control valve opening display device of the present invention, Fig. 2 is a plan view excluding the area above the display board, and Fig. 3 is the water control valve and the valve. FIG. 2 is a longitudinally sectional front view of the valve housing showing the configuration of the entire housing. DESCRIPTION OF SYMBOLS 1... Water control valve, 2... Valve housing, 11... Rotating operation shaft, 21... Device body, 36... Rotating board, 38...
...Spiral groove, 41...Transmission body, 42...Guided part, 43...Rack part, 46...Indicator, 47...
...Pinion part, 51...Pointer, 52...Opening degree display plate.

Claims (1)

[Scope of utility model registration request] A device body that rotatably penetrates and supports a rotary operation shaft for opening and closing the water control valve and is fixedly supported at the upper part of the valve housing, and a device body that is rotatably supported by the device body and attached to the shaft. A rotary disk that is fitted and fixed and has a spiral groove formed on its upper surface, and is supported by the device main body so as to be movable in the radial direction of the rotary disk, and is slidably engaged with the spiral groove of the rotary disk. a transmitting body having a guided portion and a rack portion; an indicator having a pinion portion rotatably fitted to the shaft body and meshed with the rack portion of the transmitting body; 1. An opening display device for a water control valve, comprising: a pointer, and an opening display plate positioned below the pointer and supported by the device main body.