JPH0719672U - Valve opening regulation plate - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to specify a predetermined intermediate opening degree in a valve having a rotary cock or plug. [Structure] A hole 1a having a shape that matches the cross-sectional shape of the valve shaft is formed, and a projecting piece 1b having a surface 1b 'that comes into contact with a stopper is provided. The surface 1b' and the axis of the flow path 5a of the valve pipe 5 are provided. The angle α with the vertical plane B passing through the heart is set to the opening angle of the valve.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an opening regulating plate in a valve that rotates a cock or a plug by operating a handle to flow or shut off a fluid such as air or water.

[0002]

[Prior art]

 BACKGROUND ART Valves having a conical cock, a valve having a spherical plug, and the like are known as valves that allow fluid to flow and be shut off by manual operation of a handle.

[0003]

[Problems to be solved by the device]

 The above valves are normally either shut off or used by rotating the handle 90 ° in a fully opened state. However, the valve should be used at a certain intermediate opening, a so-called half opened state. There is also. In that case, it is difficult to flow the fluid at an accurate flow rate because the operator has to rely on the feeling of the operator to rotate the handle at a predetermined angle.

An object of the present invention is to make it possible to define a predetermined intermediate opening degree in a valve having a rotary cock or plug.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the valve opening regulating plate of the present invention is provided with a projecting piece having a hole having a shape matching the cross-sectional shape of the valve shaft and having a surface for contacting a stopper. The angle formed by the vertical plane passing through the axis of the flow path of the valve pipe is set to the valve open angle.

[0006]

[Action]

 In the valve opening regulating plate configured as described above, the valve opening regulating plate and the handle are attached to the valve shaft in this order, and when the handle is rotated until the side contacts the stopper, the plug flow passage is opened. It is orthogonal to the flow path of the valve piping and the flow path of the valve piping is blocked. Further, when the handle is rotated until the surface of the protruding piece comes into contact with the tip of the stopper, the flow path of the plug and the flow path of the valve pipe communicate with each other at a predetermined angle.

[0007]

【Example】

 The valve opening regulating plate 1 of the present invention will be described with reference to FIGS.

The valve opening regulating plate 1 is detachably attached to a shaft 3 of a valve that allows fluid to flow and be shut off by rotating a conical cock or a spherical plug having a joint surface as the surface of a rotating body. As shown in FIG. 1, a keyhole 1a for attachment to the valve shaft 3 is bored in the central portion, and a protrusion that abuts the stopper 4 on the peripheral portion and regulates the rotation angle of the valve shaft 3. The piece 1b is a plate body formed by bending. FIG. 3 shows an example in which the spherical plug 2 is adopted.

Reference numeral 5 in FIGS. 2 and 3 denotes a valve pipe having a flow path 5a, and the spherical plug 2 is provided in the flow path 5a. At the upper end of the valve shaft 3 fixed to the spherical plug 2, as shown in FIG. 4, a surface 3a is formed which is parallel to the extension surface A of the cross section of the flow path 5a and which is perpendicular to it. . The keyhole 1a of the valve opening regulating plate 1 has a shape that matches the cross-sectional shape of the valve shaft 3 in the portion having the surface 3a.

The surface 1b 'of the projecting piece 1b which is brought into contact with the stopper 4 extends through the center of the keyhole 1a when extended. The angle α between the surface 1b ′ with the valve opening regulating plate 1 attached to the valve shaft 3 and the vertical plane B passing through the axis of the flow path 5a of the valve pipe 5 matches the opening angle of the valve. Is designed to The angle α can be set to 30 °, 45 °, etc. depending on the purpose, and the valve opening regulating plate 1 dedicated to each angle can be obtained.

In order to actually use the valve opening regulating plate 1 having such a configuration, first, the valve opening regulating plate 1 is set on the upper end portion of the valve shaft 3 in alignment with the keyhole 1a, and then, Then, the handle 6 is set in the same manner, and finally, the valve opening regulating plate 1 and the handle 6 are tightened with the nut 7. When the handle 6 is rotated to the position shown by the alternate long and short dash line in FIG. 2, the side portion of the handle 6 hits the side portion of the stopper 4, the flow passage 2a of the spherical plug 2 is orthogonal to the flow passage 5a, and the flow passage 5a is Will be shut off. Then, when the handle 6 is rotated to the position shown by the solid line in FIG. 2, the surface 1b ′ of the projecting piece 1b abuts against the tip of the stopper 4 and stops, and the flow paths 2a and 5a communicate with each other at a predetermined angle. .

[0012]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

That is, the predetermined opening degree of the valve can be obtained accurately and surely, and it becomes easy to secure the fluid with the accurate flow rate.

[Brief description of drawings]

FIG. 1 is a view of a valve opening regulating plate of the present invention, (1) is a plan view, and (2) is a side view.

FIG. 2 is a plan view showing a mode of use of the valve opening regulating plate of the present invention.

FIG. 3 is a sectional view showing a mode of use of the valve opening regulating plate of the present invention.

FIG. 4 is a perspective view of an upper end portion of the valve shaft.

[Explanation of symbols]

 1 Valve opening regulation plate 1a Hole 1b Projection piece 1b 'Stopper contact surface 2 Spherical plug 2a Spherical plug flow path 3 Valve shaft 4 Stopper 5 Valve piping 5a Valve piping flow path B Flow axis Vertical plane α Angle between the vertical projection and the vertical plane passing through the axis of the flow path

Claims (1)

[Scope of utility model registration request] 1. A vertical surface passing through a hole having a shape matching the cross-sectional shape of a valve shaft and having a surface that abuts against a stopper, the surface and the axial center of the flow path of the valve pipe. A valve opening regulation plate in which the angle formed by and is set to the opening angle of the valve.