JPS6037465A - Rotary regulator valve - Google Patents

Abstract

PURPOSE:To allow a single valve to function with rate-of-flow control and on/off control by equipping the valve with two valve elements having a common axis for rotary shaft. CONSTITUTION:A rotational shaft 2 and a valve element 4 are connected solidly through a support arm 3, and the valve element 4 rotates in compliance with the rotation of rotary shaft 2. The other valve element 7, in hemispherical form, has a through hole at its spherical surface, and is in engagement with said rotary shaft 2 through a bearing 6. Rotation of this ratary shaft 2 provides easy change of the sectional area of flow passage formed from the valve element 4 and valve seat 5. If the rotary shaft 2 is turned clockwise, one of the ends of the valve element 4 contacts the tip of said other valve element 7, and a further turning will rotate the valve element 7 together to cause full shutting of the valve with the valve element 7 and valve seat 8.

Description

[Detailed description of the invention] The present invention relates to a rotary control valve. Even two.

It has a built-in valve body, each of which controls the flow rate and fully opens.

It is characterized by sharing different roles: fully closed.

This invention relates to a rotary control valve.

Conventionally, rotary control valves have a valve body that is part of a spherical surface.

One is a dish-shaped globe valve type, and the valve body is spherical with a hole in the center. .

A ball valve type with a through hole, and a disc-shaped valve body.

It is broadly divided into butterfly valve type and butterfly valve type. baud.

This valve has low flow resistance and can be fully opened for small diameter pulp.

Widely used for fully closed applications (so-called 0N-OFF applications).

ing. The valve seat of a ball valve is generally made of I, such as Teflon.

Plastic material is used with airtightness in mind. Therefore, when the valve body is used at an intermediate opening for a long period of time for the purpose of controlling the flow rate of fluid, the seat surface deforms along the boundary between the part directly exposed to the fluid and the part crimped by the valve body and not exposed. When a difference in level occurs due to wear, the seat may turn over, which may lead to accidents such as internal undulation or damage to the valve seat.

There is a drawback. In order to overcome this drawback, some models have made the seat made of metal, but the sealing performance was not satisfactory, and in the end, when using the flow control valve, it was only used for 0N-OFF. The usual method is to connect shutoff valves in series.

The present invention eliminates these drawbacks and provides a compact and inexpensive rotary control valve that can be used for both ON-OFF and flow control purposes with a single actuator.1. .

It is something that

Therefore, the two control valves have a common axis of rotation.

It shall have two valve discs, and one valve disc has a rotation angle.

Continuously controls the flow rate by adjusting the valve opening depending on the change.

The valve body is used with the other valve body either fully open or fully closed, and one of the two valve bodies rotates with the rotation of the rotating shaft, and the other rotates in unison with the rotation of the rotating shaft. The material of the valve seat facing the two valve bodies is made of soft rubber or plastic with emphasis on shut-off characteristics for fully open and fully closed applications, and the valve seat facing the valve body for flow rate control is made of soft rubber or plastic with emphasis on shut-off characteristics. made of hard materials such as metal or ceramics.

It is. Also, among the two valve bodies mentioned above, the valve body for flow rate control rotates together with the rotating shaft, and the valve body for fully opening and fully closing rotates together with the rotating shaft.

Usually not in conjunction with a rotating shaft, only under certain conditions.

It may also be something that rotates together.

The effects of the present invention will be explained below based on the drawings.

explain. FIG. 1 shows an embodiment of the present invention. No.

FIG. 2 is a partially sectional side view of FIG. 1. In Figure 1.

The rotating shaft 2 and the valve body 4 are fixedly connected via a support arm 6, and as the rotating shaft 2 rotates.

The valve body 4 rotates. The other hemispherical valve body 7 is a ball.

It has a through hole in a part of its surface, just like the valve body of a ball valve.

It has a structure that looks like it is divided into two parts. This valve body 7 is.

It engages with the rotating shaft 2 via a bearing 6. The bearing 6 and the rotating shaft 2 are mutually rotatable. A valve seat 5, which faces the spherical spherical valve body 4, is made of a hard material such as metal, graphite, or ceramics, and is screwed into the main body 1 via a screw 9 in this figure.

The globe-shaped valve body 4 and the hard valve seat 5 are in slight contact with each other. The frictional resistance that is applied to the valve body 4 is small, and the frictional resistance that is applied to the valve body 4 is small.

The opening degree, that is, the shape of the valve body 4 and valve seat 5, is determined by rotation.

The cross-sectional area of the flow path can be easily changed.

can control the flow rate of fluid passing through the valve.

Ru.

Next, the hemispherical valve body 7 comes into close contact with the opposing valve seat 8.

ing. Valve seat 8 is made of soft material such as Teflon or rubber.

The valve seat retainer 10 is screwed into the main body 18 via the screw 9, so that it is suitable for the hemispherical valve body 7.

It is crimped with force. l.

When it is desired to completely shut off the flow path 7, as shown in FIG.

When rotating the rotating shaft 2 clockwise (in this figure), the valve body 4
One end touches the tip of the valve body 7. Furthermore, that.

If the valve body 7 is turned as it is, the valve body 7 will also rotate, and when the rotation is stopped at the position shown in FIG. 6, the valve body 7 and the valve seat 8 will completely close the valve.

In order to change from the state shown in Figure 3 to the state shown in Figure 1,
Needless to say, it is sufficient to rotate the rotating shaft 2 counterclockwise.

It is also an important effect of the present invention that the above-mentioned operations are performed through a single axis, the rotation shaft 2. - The rotation angle can be changed using only one actuator.

You can fully close, fully open, or adjust the flow rate with simple operations.

This is a multi-functional control valve that can also be used.

In the present invention, the valve body 4 and the valve body 7 are driven! III separately-
2 and operated with two axes are also within the scope of the present invention.

enter. There is also one in which the roles of the valve body 4 and the valve body 7 are reversed.

The same is true.

[Brief explanation of drawings]

FIG. 1 shows the valve adjustment state in an embodiment of the present invention. . 2 is a side sectional view, and FIG. 3 is a side sectional view of FIG. 1. FIG. 3 is a plan sectional view showing a valve closed state.

Claims (1)

[Scope of Claims] (1) A rotary control valve characterized in that one valve has two valve bodies having a common axis of rotation. (2) One valve body continuously controls the flow rate by adjusting the valve opening degree by changing the rotation angle, and the other valve body continuously controls the flow rate. It is used with the body either fully open or fully closed. The rotation according to claim 1, characterized in that: type control valve. 1... (8) One of the two valve bodies relative to the rotating shaft. It rotates with the rotation of the rotation axis, and the other does not rotate together. The circuit according to claim 1, characterized in that: Divert control valve. (4) The material of the valve seat facing the two valve bodies is
1° A special feature is that the valve seat for fully closed use is made of soft material, and the valve seat that faces the valve body for flow rate control is made of hard material.
The rotary control valve according to item 1. (6) Of the two valve bodies, the flow rate control valve body rotates together with the rotating shaft, and the fully open/fully closed valve body normally does not rotate with the rotating shaft, but only under certain conditions. A rotary control valve according to claims 1, 2, and 4, characterized in that: