JPH059668B2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a flow control valve, for example, for discharging water from a dam or for irrigation, or for water supply, drainage, or for chemicals, petroleum, etc. The present invention relates to a flow rate control valve that extremely quickly and accurately adjusts the flow rate of fluids such as drinking water, various gases, and other fluids.

(Prior Art) Conventionally, a device for regulating the flow rate of the fluid uses a needle valve, a ball valve, a screw valve, etc., and these valves are operated by a driving device or manually.

(Problems to be Solved by the Invention) <Problems with the Prior Art> However, due to their structure, most of the above valves are operated by power transmission means such as screws. Therefore, if there is play in the power transmission means when the valve is operated by the drive device or manually, this directly affects the valve, causing the valve to vibrate or not operate correctly.

In addition, when using a power transmission means such as a screw, the movement of the valve is very slow because one rotation of the screw produces one pitch of movement. Insert a tapered pin (needle) and connect the tapered surfaces to each other.
Since this method adjusts the flow rate by setting the interval between the valves as appropriate, its operation is slower, which poses a major obstacle to use in places where the valve must be closed urgently or where the flow rate must be adjusted frequently. Ta.

<Technical Problem> Therefore, in view of the above-mentioned problems, the present invention is aimed at, for example, discharging water from dams or irrigation, water supply, drainage, chemicals, petroleum, drinking water, etc.
When supplying and distributing various gases and other fluids, the flow rate of the fluid can be adjusted quickly and extremely accurately, and the flow path can be opened and closed in an emergency or in places where frequent opening and closing of the flow path is required. It was created with the challenge of providing a valve that is optimal for use.

[Structure of the Invention] (Means for Solving the Problems) The present invention connects an appropriate number of fluid inflow pipes and outflow pipes, and provides an appropriate number of communication holes that allow these pipes to communicate with each other. a valve case that is sealed,
The valve body includes a rotatable valve body disposed within the valve case to block the communication hole, and a drive mechanism for rotating the valve body, and the valve body has at least a part of its circumference in an arc shape. A suitable number of flow rate adjustment holes of an appropriate shape are bored in the plate material so as to pass through the position of the communication hole during rotation, and the drive mechanism is driven around an axis perpendicular to the rotation axis of the valve body at a distance. In order to make the drum-shaped worm rotate by the driving force of the device and the valve body work together, the drum-shaped worm is arranged around the periphery of the arc-shaped part of the valve body at intervals matching the pitch of the grooves of the worm. The above-mentioned problem is solved by forming a roller device, and each roller device is formed to rotatably support a roller, press the roller in the direction of the worm, and engage with the worm. be.

(Function) The flow rate regulating valve according to the present invention connects the inflow pipe and the outflow pipe to the valve case, and rotates the valve body by the driving force of the driving device via the driving mechanism.

Then, the communication hole that communicates the inflow pipe and the outflow pipe is aligned with the flow rate adjustment hole. The fluid from the inlet tube then flows completely unrestricted.

Next, when the valve body is rotated so that the communication hole and the flow rate adjustment hole are gradually shifted from each other, the hole through which the fluid passes becomes narrower. In this way, the flow rate of the flowing fluid is gradually restricted. and,
A state in which the communication hole and the flow rate adjustment hole do not completely match,
In other words, when the communication hole and the flow rate adjustment hole are completely disconnected, the valve is closed and the fluid is completely stopped.

In addition, in order to make the drum-shaped worm and the valve body cooperate with each other, the drum-shaped worm rotates by the driving force of the drive device about an axis perpendicular to the rotation axis of the valve body at a distance. It is formed by roller devices arranged on the periphery of the arcuate portion at intervals matching the pitch of the grooves of the worm, and each roller device rotatably supports a roller and rotates the roller in the direction of the worm. It is formed to press and engage with the worm, so there is no buckling at all times. Furthermore, although meshing deceleration was originally impossible without backlash, since the rollers rotate, deceleration without backlash is now possible.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

That is, the symbol FB shown in the figure is a flow control valve, and the valve case C and this valve case C are connected to each other.
Valve body B arranged inside and this valve body B
It is formed from a drive mechanism D that rotates.

Valve case C has an appropriate number of valves, 1 in the illustration.
The main inflow pipe 1 and outflow pipe 2 are connected, and an appropriate number of circular communication holes 3 (in the illustrated case, one circular communication hole 3) are provided to connect the pipes 1 and 2, and the pipes are sealed.

The valve body B is formed of a plate material having at least a part of its circumference in an arcuate shape, in the case of the illustration, a disc plate, and is rotatable within the valve case C, and is designed to block the communication hole 3. It is arranged.

The structure that allows the valve body B to freely rotate is that a cylinder whose diameter is slightly smaller than that of the valve body B is connected concentrically with the valve body B on the side surface of the valve body B to form a shaft cylinder 11. A roller device 12 is disposed between the valve case C and the valve body B is rotatably formed relative to the valve case C.

Further, this valve body B has one circular flow rate adjustment hole 13 that passes through the position of the communication hole 3 when the valve body B is rotated.

The flow rate adjustment hole 13 has approximately the same diameter as the communication hole 3, and when the communication hole 3 and the flow rate adjustment hole 13 match, the flow rate adjustment valve FB opens, and the flow rate adjustment hole 13 opens in a state where the communication hole 3 and the flow rate adjustment hole 13 do not overlap at all. The communication hole 3 is closed by the valve body B, and the flow rate control valve FB is closed.

On the other hand, each packing 14 (actually O
Since the valve body B rotates, the portion between the flow rate adjustment hole 13 and the valve case C is sealed as follows.

That is, as described above, since the valve body B rotates, first, the contact between the surface of the valve body B on the side of the inflow pipe 1 and the communication hole 3 is caused by the rotation of the valve body B.
A protective material 15 with excellent wear resistance is pasted on the side surface of the communication hole 3, and a pressing member 17 that presses against the protective material 15 by a spring 16 is placed around the inner opening of the communication hole 3. This pressing member 17
An elastic material 18 is planted on the pressing end surface of the valve body B, and by pressing this elastic material 18 against the protective material 15, the contact area between the communication hole 3 on the side of the inflow pipe 1 and the valve body B is sealed. be.

Further, a packing 14 is also interposed between the pressing member 17 and the periphery of the internal opening of the communication hole 3 of the valve case C in which the pressing member 17 is disposed for sealing.

A fluid regulation pipe 19 having the same inner diameter as the flow rate adjustment hole 13 is connected to the side surface of the valve body B on the side of the outflow pipe 2, and since this is the fluid outflow side, the flow rate adjustment hole 13
When the communication hole 3 and the valve body B match, the fluid is sent out to the outflow pipe 2 by the fluid regulating pipe 19. In particular, the contact area between the valve body B and the communication hole 3 on the outflow pipe 2 There is no need to seal it tightly.

In addition, the reference numeral 20 in the figure is a connecting flange for connecting the inflow pipe 1, 21 is also a connecting flange for connecting the outflow pipe 2, and 22 is an adjustment screw for adjusting the pressing force of the spring 16.

On the other hand, a drive mechanism D is formed in the upper part of the valve case C.

As shown in FIG. 3, this drive mechanism D rotates by the driving force of a drive device (not shown) about an axis perpendicular to the rotation axis of the valve body B at a distance, and has a drum-shaped shape. A drum-shaped worm, so-called Hindley worm 31, has a helical meshing groove 32 on the periphery of the member, and a pitch of the meshing groove 32 on the periphery of the arc-shaped portion of the valve body B, in the case of illustration, the entire periphery. It consists of a roller arrangement groove 33 provided at intervals and angles that match, and a roller device 41 arranged in this roller arrangement groove 33.

Each of the roller devices 41 has a plurality of rollers 42 (in the illustrated case, two rollers 42 ) rotatably supported on a shaft support 43 and disposed within the roller arrangement groove 33 . is formed so that the shaft support 43 is pressed in the direction of the Hindley worm 31 by the roller pressing spring 44, and the roller 42 is brought into pressure contact with the meshing groove 32, so that each roller device 41 and the Hindley worm 31 mesh with each other. It's like this. Further, the shaft support 43 is formed so as to be able to rotate by a slight angle, and is also formed to correspond to changes in the angle of the meshing groove 32 of the Hindley worm 31.

Therefore, if the drive mechanism D formed in this way is used, there will be no buckling because the roller device 41 is always pressed toward the meshing groove 32 of the Hindley worm 31, and there should be no buckling. Although meshing deceleration was impossible,
Since the roller 42 rotates, deceleration without backlash is possible.

Next, to explain the use and operation of the flow control valve according to the present invention, first, the inflow pipe 1 and the outflow pipe 2
and connect it to valve case C. Then, the valve body B is rotated by the drive mechanism D.

Then, the communication hole 3 that communicates the inflow pipe 1 and the outflow pipe 2 is aligned with the flow rate adjustment hole 13. Then, the fluid from the inflow pipe 1 flows without being restricted at all.

Next, when the valve body B is rotated so that the communication hole 3 and the flow rate adjustment hole 13 are gradually shifted from each other, the hole through which the fluid passes becomes narrower. In this way, the flow rate of the flowing fluid is gradually restricted. When the communication hole 3 and the flow rate adjustment hole 13 are not completely aligned, that is, the communication hole 3 and the flow rate adjustment hole 13 are completely separated, the valve is closed and the fluid is completely stopped.

Since the valve body B is rotated in this way by the drive mechanism D without backlash, it can follow the rotation of the drive device without backlash, so it can be rotated by the fluid flow. This eliminates the negative effects of vibration, which could make the flow rate adjustment unstable, or even damage the valve body B if the vibration becomes severe, and furthermore, the flow rate can be adjusted very accurately. .

Further, as described above, since the valve can be opened and closed simply by rotating the valve body B, the operation can be performed quickly.

The shape of the valve body B is such that the Hindley worm 31 and the roller device 41 are engaged to rotate the valve body B by the required rotation angle, so at least the roller device 41 can be rotated by the necessary rotation angle. Needless to say, it is sufficient that there is an outer circumferential arc portion to be formed, and the valve body B need not be in the shape of a disc as described above.

In addition, the shape of the flow rate adjustment hole 13 of the valve body B is also
It does not have to be circular as described above, but may be selected as appropriate, such as an ellipse, a fan shape, or an oval droplet shape, as required, and the number of flow rate adjustment grooves 13 may be multiple instead of one. In that case, the shapes of the protective material 15, the spring 16, the pressing member 17, the elastic material 18, etc. are also formed to suit the shape of the flow rate adjustment hole 13 so as to be sealed, and all of these are limited to the shapes of the above embodiments. It will not be done.

Furthermore, it goes without saying that the structure of the roller device 41, the rotatable holding structure of the drive mechanism D, the shape of the valve case C, and other structures are not limited to the embodiments described above.

[Effects of the Invention] The present invention configured as described above connects an appropriate number of fluid inflow pipes 1 and outflow pipes 2, and provides an appropriate number of communication holes 3 for communicating these pipes 1 and 2 with each other. It consists of a valve case C that is provided and sealed, a valve body B that is rotatable within the valve case C and arranged so as to block the communication hole 3, and a drive mechanism D that rotates the valve body B. Therefore, by opening an appropriate number of flow rate adjustment holes 3 of an appropriate shape in the actuating body B, which pass through the positions of the communication holes 3 during rotation, the communication holes 3 can be opened and closed by rotating the drive mechanism D. and the operation can be done quickly.

The valve body B is formed of a plate material having at least a part of its circumference in an arc shape, and the drive mechanism D
In order to make the drum-shaped worm and the valve body B cooperate with each other, a drum-shaped worm rotates by the driving force of the drive device about an axis that is perpendicular to the rotation axis of the valve body B at a distance. Roller devices 41 are formed on the periphery of the arc-shaped portion of the main body B at intervals matching the pitch of the grooves of the worm, and each roller device 41 is connected to a roller 42.
Since the roller device 42 is rotatably supported and formed to press in the direction of the worm and engage with the worm, the roller device 41 is always pressed so as to engage with the drum-shaped worm, so there is no backlash. Originally, meshing deceleration was impossible without backlash, but since the roller 42 rotates, deceleration without backlash becomes possible. Therefore, since the valve body B can follow the rotation of the drive device without play, it is possible to prevent the valve body B from vibrating due to the flow of fluid and making the flow rate adjustment unstable. There is no adverse effect that could result in damage to the valve body B if the flow rate becomes severe, and furthermore, the flow rate can be adjusted very accurately.

In addition, by appropriately changing the shape of the flow rate adjustment hole 13, it becomes possible to appropriately select the control of the fluid flow, making it possible to use it in all fields.

Also, the number of communicating holes 3 may be one, but in this case, if two communicating holes 3 are provided and the inflow pipe 1 and the outflow pipe 2 are connected to each, the flow rate can be adjusted in two series. . Furthermore, by arranging a plurality of flow rate regulating valves FB formed in this manner in parallel or in series, it is possible to correspond to various flow rate controls.

As described above, according to the present invention, for example, water discharge from a dam or irrigation water, water supply, drainage, or
When supplying and distributing chemicals, petroleum, drinking water, various gases, and other fluids, it is possible to quickly and extremely accurately adjust the flow rate of the fluid, opening and closing the flow path in an emergency, or frequently changing the flow path. It has various excellent effects, such as being ideal for use in places where opening and closing are required.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
2 is a partially cutaway front view, FIG. 2 is a cross-sectional view along the - arrow line in FIG. 1, and FIG. 3 is an enlarged cross-sectional view of the main part of the roller device. FB...Flow control valve, B...Valve body,
C... Valve case, D... Drive mechanism, 1... Inflow pipe, 2... Outflow pipe, 3... Communication hole, 11... Shaft cylinder, 12... Roller device, 13... Flow rate adjustment hole, 1
4... Packing, 15... Protective material, 16...
Spring, 17... Pressing member, 18... Elastic material, 19... Fluid regulation tube, 31... Hindley worm, 32... Engaging groove, 33... Roller arrangement groove, 41... Roller device, 42... ...roller, 43...shaft support, 44...roller pressing spring.

Claims (1)

[Claims] 1 Connect an appropriate number of fluid inflow pipes and outflow pipes,
A valve case that is sealed and has an appropriate number of communication holes that allow these pipes to communicate with each other, a valve body that is rotatable within this valve case and is arranged to block the communication holes, and this valve body. The valve body is a plate material having at least a part of its circumference in an arc shape, and has an appropriate number of flow rate adjustment holes of an appropriate shape that pass through the position of the communication hole when rotated. The drive mechanism includes a drum-shaped worm that rotates by the driving force of the drive device about an axis that is perpendicular to the rotation axis of the valve body at a distance, and in order to cause the drum-shaped worm and the valve body to cooperate, It is formed of roller devices arranged around the arcuate portion of the valve body at intervals that match the pitch of the grooves in the worm, and each roller device rotatably supports a roller and rotates the roller into the worm. A flow rate regulating valve characterized in that it is formed so as to press in the direction of and engage with a worm.