JPS5917306B2 - fluid control valve - Google Patents

Description

[Detailed description of the invention] The present invention relates to fluid control valves.

Many types of fluid control valves are known, including three types of check valves: check valves, shuttle valves, and quick exhaust valves.

These many types of control valves have different structures depending on their purpose, so each control valve is usually designed and manufactured independently without being interconnected.

In general, some types of control valves are used in large amounts, while others are used in small amounts, and when manufacturing many types of control valves, the production plan becomes complicated.

Furthermore, when manufacturing many types of control valves, it is necessary to manufacture many types of parts, so it is necessary to unify parts between different types of control valves,
Since it is difficult to standardize products, some products are mass-produced and others are produced in small quantities, leading to an unreasonable situation in which some products become extremely expensive depending on the type.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and provide a fluid control valve that can be configured with many types of control valves using common parts.

The present invention aims to achieve the above-mentioned purpose by providing two bodies of the same shape, one intermediate body that can be assembled between both bodies, two valve bodies, one spring receiver, and one spring. , a second seal member for sealing the valve seat attached to each valve body, a third seal member having the function of a check valve that can be attached to any one valve body, and a seal member between the main bodies or between the main bodies. The first sealing member necessary to seal the joint surface with the intermediate body is one set of components, and unnecessary components predetermined according to the type of valve are excluded from each component, and the remaining components are This was achieved by making it possible to assemble a fluid control valve with elements.

By selecting the components to be excluded, it is possible to rearrange the check valve, shuttle valve, and rapid exhaust valve at any time.

The present invention makes it possible to assemble three types of fluid control valves from common parts at any time, which facilitates production planning in factories and enables mass production.

On the user side, if one set of components is prepared, it is possible to switch between the three types of valves at any time, and even if the type of valve changes due to changes in piping, it is not necessary to replace the valve each time. Since there is no longer a need to prepare various types of valves individually, it is also more economical.

In the above component, the main body is provided with a fluid chamber and a fluid port which are open at one end and communicate with each other, and a valve seat is formed in the fluid chamber at a portion communicating with the fluid port.

The fluid port is connected to the piping, the fluid chamber communicates with the fluid chamber of the main body or intermediate body to which it is connected, and can slidably accommodate the valve body.

The intermediate body is formed with an intermediate fluid chamber formed through the intermediate fluid chamber, and an outlet opening into the intermediate fluid chamber and extending in a direction perpendicular to the direction through which the intermediate fluid chamber passes.

The fluid port is connected to piping.

The intermediate body is used when making a shuttle valve by assembling it between two bodies.

The valve body is formed in such a shape that one end thereof can be brought into close contact with the valve seat of the main body, and the outer peripheral surface is formed to be slidable in the fluid chambers of the main body and the intermediate main body.

When making a check valve, one valve element is installed inside the main body, and when making a shuttle valve, two valve elements are installed inside the main body.

In the case of a check valve, two bodies are joined together, one valve body is housed in a fluid chamber, and the valve body is pressed against the valve seat using a spring seat and a spring.

In the case of a shuttle valve, the two bodies are assembled to each other with an intermediate body interposed therebetween, and the two valve bodies are housed in the fluid chamber with the two valve bodies facing oppositely to each other.

That is, each valve body is arranged so that it can come into close contact with the valve seat of the main body.

When used as a rapid exhaust valve, in addition to the shuttle valve configuration, one valve body is equipped with a sealing member that functions as a check valve.
Assemble pieces.

As described above, at least three types of fluid control valves can be easily assembled using common components.

The details of the present invention will be explained with reference to embodiments shown in the drawings.

In FIGS. 1 to 3, two main bodies 1 and 1' formed in the same shape are arranged so that their joint surfaces 1a and 1a'fP are in contact with each other, and are fastened together by bolts 2. As shown in FIGS.

The main body 1 is (the structure of the main body 1' is exactly the same as that of the main body 1, so a description thereof will be omitted.

The same parts as those of the main body 1 are given the same reference numerals, and a ``' is added to distinguish them.

) The flange part 1b5 has two bolt holes 3 through which the bolts 2 are passed and two screw holes 4 provided at the four corners as shown in FIG. It is formed.

As shown in the figure, just screw in the bolt 2 to attach the two main bodies 1.
, 1', screw hole 4 is connected to bolt hole 3.
It is also possible to have a structure in which it is fastened with bolts and nuts.

A fluid port 5 and a fluid chamber 6 are formed in the main body 1, and the fluid port 5 and the fluid chamber 6 communicate with each other.
A valve seat 7 having a conical shape facing the valve seat 7 is provided.

The outer surface of the main body may be provided with a hexagonal portion that can be gripped with a spanner.

In the example shown in the figure, the fluid port 5 is equipped with a screw hole 8 to which a conduit or the like is screwed and connected, but it is formed as a simple hole without a screw hole, and a flange is formed for connection with a conduit or the like. It is also possible to have a structure that can be connected.

The fluid chamber 6 is formed as a substantially cylindrical chamber, and is formed concentrically with the conical surface 7a of the valve seat 7.

1 A ring-shaped seal groove 10 is formed in the joint surface 1a of the main body 1, and when the two main bodies 1 and 1' are fastened together, a ring such as an O-ring is inserted into the hollow part formed by the seal grooves 10 and 10'. 1 sealing member 9 is attached, and the joint surface 1 a y 1
Prevent fluid leakage at a'.

The fluid chambers 6, 6' of the two fastened main bodies 1, 1' are connected to form one substantially cylindrical fluid chamber, into which the valve body 13 is attached.

The valve body 13 has a cylindrical surface 11 that is slidably guided by the cylindrical wall surfaces of the fluid chambers 6, 6', and a conical surface 12 that corresponds to the conical surface 7a of the valve seat 7 of the main body 1.

The valve body 13 and the cylindrical surface of the fluid chamber 60 and the cylindrical surface 11 and the conical surface 12 of the valve body are respectively formed concentrically so that the valve body 13 and the valve seat 7 are in contact with each other in a well-aligned state.

A first ring-shaped groove 15 is formed as a recess in the radial direction with respect to the valve body axis in a portion of the valve body 13 that contacts the valve seat 7, and a hollow disk-shaped or annular packing, that is, a first ring-shaped groove is formed in the first ring-shaped groove 15. 2 seal members 14 are attached.

The second seal member 14 enhances the effect of preventing fluid leakage at the joint surface between the valve seat 7 and the conical surface 12 of the valve body.

The valve body 13 is provided with a substantially cylindrical receiver portion 17 having a smaller diameter than the cylindrical surface 11 that is slidably guided in the fluid chamber 6 of the main body 1. It is delimited by a second annular groove 16 formed in four radial parts.

Fluid chamber C on the side of the valve seat 7' that does not come into contact with the conical surface 12 of the valve body
A spring receiver 18 is attached to the valve body, and a spring 19 is stretched between the spring receiver 18 and the receiver portion 17 of the valve body.

The valve body 13 receives a force such that the conical surface 12 is pressed against the valve seat 7 by the spring 19, and the conical surface 12 and the second seal member 1
4 seals and shuts off the fluid port 5 and the fluid chamber 6.

When the valve body 13 is pushed and moved by the fluid flowing in from the fluid port 5 against the force of the spring 19, the pressure fluid passes through the gap created between the valve seat 7 and the conical surface 12 of the valve body and flows into the fluid chamber. 6.

The fluid flowing into the fluid chamber 6 flows through a plurality of circulation grooves 2 partially formed in the cylindrical surface 12 of the valve body 13 and extending in the axial direction.
0 towards the fluid chamber 6' of the other body 1';
It flows out through the fluid port 5' into a hidden conduit or the like.

That is, fluid can flow freely from left to right in the figure.

On the other hand, for fluid flowing from right to left, that is, fluid flowing in from the fluid port 5', the valve body 13 is pressed against the valve seat 9 of the main body 1 by the force of the spring 19 and the pressure of the fluid flowing in. The flow path is closed between the fluid chamber 6 and the fluid port 5, and the flow of fluid is prevented.

As described above, two main bodies 1, 1', one valve body 13, one first seal member 9, one spring receiver 18, one spring 19, and one second seal member 14 are provided. It is shown that a two-port check valve is configured.

In FIG. 5, an intermediate body 21 is arranged between the two bodies 1, 1' shown in FIG. 1, and is fastened together with the two bodies 1, 1' by bolts 2.

The intermediate body 21 has fluid chambers 6, 6 of the bodies 1, 1' when fastened.
An intermediate fluid chamber 2 is concentric with the fluid chambers 6 and 6' and has approximately the same inner diameter so as to be connected to the fluid chambers 6 and 6' to form one fluid chamber.
2 is formed.

The intermediate body 21 is further formed with an intermediate fluid port 23 extending radially with respect to the intermediate fluid chamber 22 , and the intermediate fluid port 23 communicates with the intermediate fluid chamber 22 .

The intermediate fluid port 23 may be formed with a screw 24 like the fluid port 5 of the main body 1, or may be formed as a single hole instead of a screw and provided with a flange for flange connection to a conduit or the like. can.

A fluid chamber 6 of the main body 1 and an intermediate fluid chamber 22 of the intermediate main body 21,
In one fluid chamber formed by the fluid chamber 6' of the main body 1', two valve bodies 13 shown in FIG. 1 are integrally installed with the receiver parts 17 interconnected. .

When the two valve bodies 13 are connected and one conical surface 11 abuts against the valve seat 7 or 7' of the main body, the other conical surface 11
The sizes of the main body 1, the intermediate main body 21, and the valve body 13 are designed in advance so that a gap is formed between the valve seat 7' or the valve seat 7' or 7.

The two valve bodies 13 can be easily connected by providing a known connecting means (not shown) in the portion 17, such as a bayonet type connecting portion using a claw and groove.

With this configuration, the same valve body can be used as a common component in the example of FIG. 1 and the example of FIG. 5.

However, if necessary, two valve bodies 13 may be used for the example of FIG.
It is also possible to prepare a single valve body that is integrally formed in advance.

The structures of the main bodies 1, 1' and the valve body 13 in the example shown in FIG. 5 are the same as those shown in FIGS. 1 to 4, and detailed explanations thereof will be omitted.

In FIG. 5, when fluid flows in from the fluid port 5 of the main body 1, that is, from the left side of the figure, the valve body 13 is pushed to the right by the fluid pressure, and the valve body 13' on the right side (and the valve body on the left side) is pressed to the right by the fluid pressure. The conical surface 12' of the valve seat 7' of the main body is in contact with the conical surface 12' of the valve seat 7', which is clearly distinguished by adding an "l" to the symbol, and is sealed by the second sealing member 14', so that the fluid chamber 6' and the fluid port 5' are in contact with each other. On the other hand, a gap is formed between the valve body 13 on the left side and the valve seat I of the main body 1.

Therefore, the fluid flowing in from the fluid port 5 is transferred to the conical surface 1 of the valve body.
2 and the valve seat 7 and the flow groove 20 of the valve body 13 to enter the intermediate fluid chamber 22 and enter the fluid port 23 of the intermediate body 21.
More leakage.

Conversely, when fluid is introduced from the fluid port 5', that is, from the right side in the figure, the valve bodies 13 and 13' are pushed to the left in the figure by the fluid pressure, and contrary to the above, the fluid port 5 and the fluid chamber 6 are The space between the fluid port 5' and the fluid chamber 6' is opened.

Therefore, the fluid flowing in from the right side passes through the gap between the conical surface 12' of the valve body 13' and the valve seat 7' and the flow groove 20' of the valve body 13', enters the intermediate fluid chamber 22, and enters the fluid port. It flows out from 23.

As described above, two main bodies 1, 1', two valve bodies 13,
13', two first seal members 9, and two second seal members 14, 14' constitute a shuttle valve.

A third sealing member 26 having a lip portion 25 formed in a substantially conical shape is attached to the second ring-shaped groove 16 of one valve body 13 of the shuttle valve shown in FIG.
When the third seal member 26 is attached as shown in FIG. 6 with the tip facing inward of the fluid chamber and in contact with the peripheral wall of the fluid chamber, the third seal member 26 is bent in one direction, for example, on the right side in FIG. Depending on the fluid pressure in the direction, the lip portion 25 is deflected and a gap is formed between the lip portion 25 and the peripheral wall of the fluid chamber 6 or 922, but in the opposite direction, it cannot be bent due to contact with the peripheral wall of the fluid chamber. figure,
Rather, the fluid pressure in the opposite direction increases the pressing force against the peripheral wall of the fluid chamber, thereby strengthening the seal.

That is, by the third seal member 26 of the embodiment shown in FIG. 6, adjacent fluid spaces with the third seal member 26 as a boundary are sealed off or opened depending on the flow direction of the fluid.

The control valve shown in FIG. 6 equipped with a third seal member having such an effect connects the fluid port 5 of the main body 1 to a fluid source, connects the fluid port 23 of the intermediate main body 21 to an actuator, a tank, etc. In use, a quick exhaust valve is formed in which the fluid port 5' of the main body 1' is connected to the piping so as to be opened.

That is, when fluid flows in from the fluid port 5, the fluid passes through the fluid port 23 of the intermediate body 21 and is supplied to the actuator, tank, etc., as explained in FIG. 5, and the fluid inflow speed is also connected to the actuator, etc. It is set depending on the diameter of the conduit, etc.

When the fluid, such as compressed air, supplied to the fluid port 5 is discharged from the fluid port 5 by operating a solenoid valve or the like (not shown), the pressure in the fluid port 5 gradually decreases, and the pressure in the fluid port 5 gradually decreases. The fluid pressure at the fluid port 5 becomes higher than the fluid pressure at the fluid port 5, and a leftward force is applied to the third seal member 26, causing the valve bodies 13 and 13' to move to the left in FIG.

In this way, the fluid port 5 and the fluid chamber 6 are cut off, and the fluid chamber 6' and the fluid port 5' are opened.

In this state, fluid can be rapidly discharged through the fluid port 51.

That is, the fluid supplied to the actuator etc. is rapidly exhausted.

In the example shown in FIG. 6, the third seal member acts as a check valve and at the same time acts as a pressure receiving surface for moving the valve body toward the left in the figure by fluid pressure. The function of a quick exhaust valve, which cannot be obtained in the example shown in FIG. 5, can be achieved only by the presence or absence of one sealing member.

Thus, as shown in FIG. 6, there are two bodies 1, 1', one intermediate body 21, two discriminations 13, 13, two first seal members 9, two second seal members 14. 14' and one third sealing member 26 are shown to constitute a quick exhaust valve.

In the examples shown in FIGS. 5 and 6, it is possible to use one valve body formed in advance by integrally forming two valve bodies 13 and 13'.

According to the present invention, a main body, an intermediate main body, one or two types of valve bodies, and three
By changing the combination of a few common components such as different types of seal members, it is possible to easily construct multiple types of control valves, such as check valves, shuttle valves, and rapid exhaust valves.

As long as the diameter of the connecting conduit is the same, the main body, intermediate body, valve body, and sealing member of at least three types of control valves can be shared, making it easier to plan the production of parts and mass production. This made it possible to reduce the price.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the check valve according to the present invention, Fig. 2 is a left side view of Fig. 1, Fig. 3 is an external view of Fig. 1, and Fig. 4 is a sectional view taken along the line ■-■ of Fig. 1. , FIG. 5 is a longitudinal sectional view of the shuttle valve,
FIG. 6 is a longitudinal sectional view of the quick exhaust valve. 1.1'...Body, 5,5'...Fluid port, 6,6'
... Fluid chamber, 7, 7'... Valve seat, 9... First seal member, 13°13'... Valve body, 14... Second seal member, 18... Spring receiver, 19... spring, 21...
- Intermediate body, 22... intermediate fluid chamber, 23... fluid port,

Claims (1)

[Claims] 1 Two bodies of the same shape, one intermediate body, two valve bodies, one spring, one spring receiver, and three types of sealing members constitute one set of components. , the main body has fluid chambers that communicate with each other and are open to the outside, a fluid port, and a valve seat formed in a portion of the fluid chamber that communicates with the fluid port;
The intermediate body has an intermediate fluid chamber formed in a penetrating shape and a fluid port extending in a direction perpendicular to the penetrating direction of the intermediate fluid chamber and communicating with the intermediate fluid chamber. It is designed to be able to be assembled on the opening end of the fluid chamber.
The outer peripheral surface of the valve body is formed to be slidable within the intermediate fluid chambers of the main body and the intermediate body, and one end face is formed so as to be joinable to the valve seat of the main body, thereby closing between the fluid chamber and the fluid port when joined. and the spring receiver is formed to be able to be installed in the fluid chamber of the main body, and the spring is disposed between the spring receiver installed in the main body and the valve body in the main body to press the valve body against the valve seat. Among the seal members, the first seal member is a seal member that seals the joint surfaces between the main bodies or the main body and the intermediate main body, and the second seal member is attached to the valve body and seals the joint surface between the main bodies or the main body and the intermediate main body. The third seal member can be attached to the outer periphery of the valve body, and contacts the inner circumferential surface of the fluid chamber of the main body while being inclined in one direction and vice versa. It is formed as a sealing member that has the function of a stop valve, and the combination of the above components functions as a check valve.
A fluid control valve characterized in that one of three types of control valves, a shuttle valve and a rapid exhaust valve, can be configured as desired.