JPH024297Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a valve body locking structure for a flow rate regulating valve, and in particular, the present invention relates to a valve body locking structure for a flow rate regulating valve, and in particular, it is possible to easily lock and unlock the valve body for flow rate regulating valve even in a narrow space. This invention relates to a valve body lock structure of a flow rate regulating valve that can be adjusted.

[Prior Art] As shown in FIG. 3, for example, the operating section for adjusting the flow rate of a conventional flow rate regulating valve has an adjusting screw 2 having a wrench hook 1 at the tip connected to the valve body, and the adjusting screw 2 is connected to the valve body. It is customary to screw it onto a member 3 attached to the main body and tighten it with a nut 4.

[Problems to be solved by the invention] However, in such conventional technology, when adjusting the flow rate, the nut 4 is first loosened with a wrench, and then the adjusting screw 2 is turned with the wrench to adjust the flow rate. After that, a spanner must be applied to the spanner hook part 1, and while holding the adjusting screw 2 so that it does not turn, the nut 4 must be tightened with another spanner. Therefore, if the adjusting screw 2 is placed in a narrow space due to fluid equipment or piping, the wrench is difficult to rotate, making operation difficult and cumbersome.

The present invention was developed by focusing on the problems of the conventional technology, and the purpose of the present invention is to easily lock and unlock the flow rate regulating valve body of a flow rate regulating valve even in a narrow space, and to easily operate the valve body. The goal is to do what is possible.

[Means for Solving the Problems] The gist of the present invention, which was made to achieve the above object, is to reduce the flow rate by slidably fitting into the fitting hole of the valve body and moving it in the axial direction. An extension part is provided on the valve body which allows adjustment of the valve body, and a holding member is attached to the valve body, which has a female thread part coaxially with the extension part of the valve body and a cylindrical inner hole connected to the female thread part. The extension part of the body is provided with a male threaded part that screws into the female threaded part of the holding member, and the rotational operation member connected to the male threaded part is fitted into the inner hole, and the opposite male threaded part of the rotational operation member is fitted. A bottomed hole is provided in the axial direction from the side end,
In addition, a plurality of communication holes are bored in the radial direction that communicate with the bottomed hole and open on the outer periphery of the rotation operation member fitted in the inner hole, and each communication hole has a hole formed on the inner periphery of the inner hole of the holding member. A braking member that can be pressed against a surface and a first sphere that comes into contact with the braking member are respectively disposed, and are screwed into the bottomed hole so that the ball can advance in the direction of the bottomed hole, and a second sphere inserted into the bottomed hole. 1st through sphere
A lock operation member that pushes out the sphere along the communication hole is arranged, and the lock operation member is rotated to press the braking member against the inner circumferential surface of the inner hole, thereby preventing rotation of the rotation operation member. It is.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

In FIG. 1, reference numeral 12 denotes a valve body of a flow rate regulating valve, and a valve body 20 is slidably fitted into a fitting hole 18 provided in the valve body 12 that opens the flow passages 14 and 16. By changing the relative position of the fitting hole 18 in the axial direction, the flow rate flowing between the flow paths 14 and 16 can be adjusted.

A male threaded portion 22 is protruded from one end of the valve body 20, and a rotation operating member 24 is coupled to the end of the male threaded portion 22 so as to be located on the same axis. That is, the end of the threaded portion 22 is fitted into the hole of the rotation operating member 24 and locked by a set screw. With the male threaded portion 22 and the rotation operation member 24,
An extension of the valve body 20 is configured.

The valve body 12 includes a female threaded portion 26 coaxially with the extension portion of the valve body and a cylindrical inner hole 2 connected to the female threaded portion.
8 is attached, the female threaded portion 26 is screwed into the male threaded portion 22, and a large diameter portion formed at one end of the rotational operation member 24 is rotatable in the inner hole 28. They are fitted together so that they can move in the axial direction. A knob 3 is provided at the protruding end of the rotation operating member 24.
2 is fixed and by turning the knob 32,
The valve body 20 moves through the threaded fitting portion between the female threaded portion 22 and the female threaded portion 26, thereby making it possible to adjust the flow rate.

From the opposite end of the rotation operation member 24 to the first
As shown in FIG. 2, the bottomed hole 34 in the axial direction
is provided, further communicates with the bottomed hole 34, and is connected to the inner hole 2.
A plurality of communication holes 36 are radially bored in the outer circumferential portion of the rotation operation member 24 fitted in the rotation operation member 8 . Inside each communication hole 36, an inner hole 2 of the holding member 30 is provided.
8, a braking member 40 that can be pressed against the inner circumferential surface and a first spherical body 38 that abuts the braking member 40 are respectively arranged, and a ball 41 as a second spherical body is arranged on the back side inside the bottomed hole 34. A push rod 42 is disposed at an intermediate position so as to be able to come into contact with the ball 41, and a push screw 46 having a hexagonal hole 44 for engaging a hexagonal wrench at one end is screwed into the outer end. The push screw 46 and push rod 42 constitute a lock operating member. In addition,
The push rod 42 may be provided integrally with the push screw 46. Instead of the hexagonal hole 44, an engagement part is provided at the tip of the shaft-like part, such as a box wrench or a driver, and is engaged with a rotary tool that can rotate the set screw by rotating around the shaft-like part. An engaging portion may also be provided. When the push screw 46 is turned in a direction that advances to the left in FIG.
1 is pressed against the ball 38, the ball 38 is pushed outward, and the braking member 40 is pressed against the holding member 30.
The rotation operation member 2 is pressed against the inner peripheral surface of the inner hole 28 of the
4 is prevented from rotating. In other words, it is locked.
It is unlocked by turning the set screw 46 in the opposite direction.

As described above, according to the embodiment, the rotation operation member 24 can be easily locked by the rotation of the set screw 46.
Since it can be unlocked, the flow rate can be adjusted easily and in a short time. Furthermore, if the set screw 46 is rotated by the longitudinal axis of the hex wrench, it can be rotated even when the rotation operation member is placed in a narrow space.
It has the advantage of being able to adjust the flow rate.

In the embodiment described above, the rotation operation member 24 may be integrally connected to the male threaded portion 22 of the valve body 20.

Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment in any way, and it goes without saying that it can be implemented in various forms without departing from the gist of the present invention. be.

[Effects of the invention] As described in detail above, according to the invention, the valve body has a retainer provided with a female threaded portion coaxially with the extension portion of the valve body and a cylindrical inner hole connected to the female threaded portion. Attach the member, provide the extension part of the valve body with a male threaded part that screws into the female threaded part of the holding member, and fit the rotational operation member connected to the male threaded part into the inner hole to perform rotational operation. A bottomed hole is provided in the axial direction from the end of the member opposite to the male thread, and a plurality of communicating holes are provided that communicate with the bottomed hole and open on the outer periphery of the rotation operation member fitted in the inner hole. A braking member that can be pressed against the inner circumferential surface of the inner hole of the holding member and a first sphere that comes into contact with the braking member are respectively disposed in each communicating hole, and are screwed into the bottomed hole. A lock operating member is disposed so as to be movable in the direction of the bottomed hole, and pushes out the first sphere along the communicating hole via the second sphere inserted into the bottomed hole, and the lock operating member is rotated. Since the braking member can be pressed against the inner circumferential surface of the inner hole, rotation of the locking member prevents the rotating member of the valve body extension from rotating, and the valve body can be locked or unlocked at any position. This facilitates the flow rate adjustment operation of the flow rate adjustment valve.
Furthermore, one end of the lock operation member is equipped with an engagement part for a rotary tool, which has an engagement part at the tip of the shaft-like part, so that the engagement part of the rotary tool can be locked even in a narrow space. It can be fitted into the engaging portion and the lock operation member can be turned, making it easy to adjust the flow rate in narrow spaces.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a - sectional view in FIG. 1. FIG. 3 is a partial sectional view showing a conventional example of a valve body lock structure in a flow rate regulating valve. 12...Valve body, 18...Fitting hole, 20...Valve body, {22...Male thread portion, 24...Rotation operation member}
(Extension part), 26...Female thread part, 28...Inner hole, 3
0... Holding member, 34... Hole, 36... Communication hole,
38... Ball (first sphere), 40... Braking member, 41... Ball (second sphere), {42... Push rod, 46... Push screw} (lock operating member).

Claims (1)

[Scope of Claim for Utility Model Registration] A valve body that slidably fits into a fitting hole in the valve body and can adjust the flow rate by moving in the axial direction is provided with an extension, and the valve body is provided with an extension. A retaining member is installed coaxially with the extension of the valve body and has a female threaded part and a cylindrical inner hole connected to the female thread, and the extension of the valve body is screwed into the female thread of the retaining member. A male thread is provided, a rotation operating member connected to the male thread is fitted into the inner hole, and a bottomed hole is provided in the axial direction from the end of the rotation operation member opposite to the male thread,
In addition, a plurality of communication holes are bored in the radial direction that communicate with the bottomed hole and open on the outer periphery of the rotation operation member fitted in the inner hole, and each communication hole has a hole formed on the inner periphery of the inner hole of the holding member. A braking member that can be pressed against a surface and a first sphere that comes into contact with the braking member are respectively disposed, and are screwed into the bottomed hole so that the ball can advance in the direction of the bottomed hole, and a second sphere inserted into the bottomed hole. 1st through sphere
A flow regulating valve is provided in which a lock operating member that pushes out a sphere along a communication hole is arranged, and the lock operating member is rotated to press a braking member against the inner circumferential surface of the inner hole to prevent rotation of the rotary operating member. Valve body lock structure.