JP5925665B2 - On-off valve - Google Patents

Description

  The present invention relates to an on-off valve in which a rotation operation of an operation handle with respect to a valve body is converted into a linear motion, and a valve body is operated by this linear motion to open and close the valve.

  An operation handle for opening and closing a so-called ball valve is directly connected to the valve body, and the opening and closing operation of the valve is performed by rotating the operation handle by 90 degrees. A technique has been developed in which a stopper mechanism is provided on the operation handle to prevent the valve from being opened and closed beyond the region between the maximum opening position and the closing completion position of the valve (see Patent Document 1 below). .

No. 4-1416

However, the stopper mechanism can be applied to the ball valve as described above. However, the stopper mechanism is applied to a valve of a type in which the rotation of the operation handle is converted into a linear motion by a screw and the valve is opened and closed by this linear motion. I can't. This is because the stopper mechanism prevents the operation handle from rotating beyond a rotation range of 90 degrees, and cannot be applied to a structure in which the operation handle is rotated 360 degrees or more.
In view of such problems, an object of the present invention is to provide an opening / closing completion position of a valve in which the operation handle is rotated 360 degrees or more by giving a sense of moderation to the operation of the operation handle at the end position of the linear motion corresponding to the opening / closing of the valve. To prevent the operator from performing any further operations.

According to a first aspect of the present invention, the operation of rotating the operation handle with respect to the valve main body is converted into a linear motion, and the operation is carried out relative to each other in an on-off valve in which the valve body is operated and the valve is opened and closed by the linear motion. A moderation mechanism is provided between the handle or the operation body interlocked therewith and the valve body or a fixed body integrated with the valve body, and the moderation mechanism is one of the operation handle or the operation body and the valve body or the fixed body. A convex portion is formed on the other side, and a concave portion is formed on the other side, and the convex portion is fitted to the concave portion corresponding to at least one of a maximum opening position and a closing completion position of the valve body.
According to the first invention, since the convex portion is fitted to the concave portion, a feeling of moderation is generated in the operation of the operation handle. Therefore, the operator can set the valve body to the maximum open position, or the closing completion position, that is, open / close It can be recognized that the completion position has been reached, and no further operations can be performed.

According to a second aspect of the present invention, in the first aspect, the valve body communicates with the valve body, includes a full opening range of a flow path opened and closed by the valve body, and has a flow path wider than that. Is formed with a surface that is inclined with respect to the direction of the linear motion, and the inclined surface is formed with a convex surface that swells toward the flow channel side before the flow channel is closed, and the inclined surface The surface is formed of an elastic body.
According to the second invention, the opening and closing of the valve is performed by opening and closing the opening of the flow path by the inclined surface of the valve body including the entire opening range of the flow path and having an area larger than that. Since it is formed with a convex surface swelled on the flow path side, even if there is a manufacturing dimensional error, the adhesion between the inclined surface and the flow path opening is increased, and the valve closing performance can be enhanced.

According to a third aspect of the present invention, there is provided the on-off valve according to the first or second aspect, wherein a closed space is formed between the valve body and the valve body when the valve body is in a closed completion position. The valve body is provided with a through hole that communicates with the sealed space. When the valve body is opened from the closed completion position in the valve body, the fluid in the sealed space flows through the through hole. It is characterized by that.
In the case of an on-off valve in which a sealed space is formed between the valve body and the valve main body when the valve body is in the closed completion position, the valve body enters the sealed space when the valve body is opened from the closed completion position. Since the fluid is full, the valve body becomes difficult to move due to the fluid pressure. According to the third invention, since the through hole is formed in the valve body, when the valve body is opened from the closed position, the fluid in the sealed space is passed through the through hole and obstructs the operation of the valve body. There is no need to do it. Therefore, the opening operation from the valve closing completion position can be performed smoothly.

It is front sectional drawing of 1st Embodiment of this invention. It is side surface sectional drawing of the said 1st Embodiment. It is an expanded side view of the closing part in the valve body of the said 1st Embodiment. It is a longitudinal cross-sectional perspective view of 2nd Embodiment of this invention. It is a perspective view from the upper part of the valve body of the said 2nd Embodiment. It is a perspective view from the lower part of the valve body of the said 2nd Embodiment, and a valve main body cap. It is a perspective view from the upper part of the valve body of 3rd Embodiment of this invention. It is front sectional drawing of 4th Embodiment of this invention. It is side surface sectional drawing of the said 4th Embodiment.

<First embodiment>
1 to 3 show a first embodiment of the present invention. In this case, the on-off valve moves an inflow port (flow path) 11 and an outflow port (flow path) 12 arranged in opposition to each other in the vertical direction. It opens and closes by the valve body 31 comprised in this way, It is comprised so that the gas passed through the inflow port 11 and the outflow port 12 may be opened and closed. The open / close valve, except for some parts, is composed of a resin molded product.
The inflow port 11 and the outflow port 12 are formed by integral molding of resin on the side portion of the valve body 10, the valve body 31 is inserted into the valve body 10, and the upper portion of the valve body 10 is the valve body cap 20. Closed by A valve body rod 33 is integrally provided on the upper portion of the valve body 31, and the upper portion of the valve body rod 33 penetrates the valve body cap 20 and protrudes to the upper portion thereof, and is coupled to the operation handle 40 by a screw 41. Yes.
A screw is engraved between the valve body cap 20 and the valve body rod 33, and the male screw of the valve body rod 33 is engaged with the female thread of the valve body cap 20, and the operation handle 40 is rotated to operate the valve. When the valve body rod 33 of the body 31 is rotated, the valve body 31 is moved up and down with respect to the valve body cap 20, and the valve body 31 closes the inflow port 11 and the outflow port 12 as shown in FIG. As shown in FIG. 2, the valve element 31 is moved between the position where the valve element 31 contacts the lower surface of the valve body cap 20.

A truncated cone-shaped closing portion 32 is fixed to the lower end of the valve body 31, and at the position where the valve body 31 closes the inflow port 11 and the outflow port 12, the inclined surface of the closing portion 32 is the inclined surface. Are in contact with the valve seat portions 11B and 12B of the inflow port 11 and the outflow port 12 formed so as to be inclined. Here, the closing portion 32 is made of rubber which is an elastic body, and is fixed to the lower end of the valve body 31 with a screw 34.
The inclined surface of the closing portion 32 includes the entire opening range of the valve seat portions 11B and 12B of the inflow port 11 and the outflow port 12, and is formed in a wider area. Further, as shown in an enlarged view in FIG. 3, the closing portion 32 is formed such that the inclined surface of the side portion bulges outward in the free state, and the valve body 31 closes the inflow port 11 and the outflow port 12. The inclined surface of the closing portion 32 is in close contact with the valve seat portions 11B and 12B of the inflow port 11 and the outflow port 12, and the gas flow in the inflow port 11 and the outflow port 12 is securely stopped so that no gas leakage occurs there. I have to.

  In FIGS. 1 and 2, 11A and 12A are connecting portions for connecting a joint (not shown) that relays the connection with an external flow channel pipe (not shown), and are small enough to prevent the joint from coming off annularly. A flange is formed. Reference numerals 13 and 14 denote sealed spaces formed between the valve body 10 and the valve body 31, between the opposing wall surfaces of the valve body 10 and the valve body 31, and between the valve body 10 and the valve body cap 20. A seal ring is provided between the opposing wall surfaces to prevent gas leakage between the wall surfaces. Further, reference numerals 21 and 22 in FIG. 2 denote bolts and nuts, and the valve body 10 and the valve body cap 20 are fixed by fastening the bolts 21 and the nut 22 with the valve body 10 and the valve body cap 20 interposed therebetween. doing.

  A moderation mechanism 51 is provided between the opposed surfaces of the upper end surface of the valve body 31 (corresponding to the operating body in the present invention) and the lower surface of the valve body cap 20 (corresponding to the fixed body in the present invention). The moderation mechanism 51 includes a convex portion 51 </ b> A formed on the upper end surface of the valve body 31 and a concave portion 51 </ b> B formed on the lower surface of the valve body cap 20. The convex portion 51A is formed by protruding one portion of the upper end surface of the valve body 31, and the concave portion 51B is formed on the lower surface of the valve body cap 20 so as to correspond to the locus circle drawn by the convex portion 51A of the rotating valve body 31. A plurality are formed on the circumference. Specifically, the lower surface of the valve body cap 20 is recessed along the circumference, and a plurality of recesses 51B are formed by projecting a number of protrusions along the circumference from the recessed surface. Yes. And between the protrusions which adjoin each other is made into the one recessed part 51B, and the one recessed part 51B is made into the magnitude | size in which the one convex part 51A fits.

As shown in FIG. 1, the convex portion 51 </ b> A and the concave portion 51 </ b> B constituting the moderation mechanism 51 are opposed to each other but separated from each other when the valve body 31 is in a position to close the inflow port 11 and the outflow port 12. . On the other hand, as shown in FIG. 2, when the valve body 31 is in a position where the inflow port 11 and the outflow port 12 are opened and in contact with the lower surface of the valve body cap 20, the convex portion 51A becomes one of the concave portions 51B. Will be inserted.
Therefore, when the valve body 31 is rotated by operating the operation handle 40 and the valve body 31 is moved from the position of FIG. 1 to the position of FIG. 2, the operation is performed at the moment when the convex portion 51A is fitted into the concave portion 51B. A feeling of moderation due to the fitting to the handle 40 is transmitted, and the operator can recognize that the valve body 31 has reached the maximum open position. Accordingly, it is possible to suppress the problem that the operator forcibly operates the operation handle 40 without noticing that the valve body 31 has reached the maximum open position, and damages the resin on-off valve.

<Second Embodiment>
FIGS. 4 to 6 show a second embodiment of the present invention. The second embodiment is characterized by a moderation mechanism 51 provided with only one in the first embodiment. In the second embodiment, the moderation mechanisms 52 and 53 are two points. Although the other configurations are different in detail, the portions related to the essence of the invention are the same. Therefore, the portions that are essentially the same between the two are assigned the same reference numerals and the description thereof is omitted.
As shown in FIG. 4, the moderation mechanism 52 is provided between the upper surface of the valve main body cap 20 and the lower surface of the operation handle 40, and the upper surface of the valve main body cap 20 has the convex portion 51 </ b> A of the first embodiment. A similar convex portion 52A is formed, and a concave portion 52B similar to the concave portion 51B of the first embodiment is formed on the lower surface of the operation handle 40.
4-6, the moderation mechanism 53 is provided between the upper surface of the valve body 31 and the lower surface of the valve body cap 20, and the upper surface of the valve body 31 is well illustrated in FIG. Thus, a convex portion 53A similar to the convex portion 51A of the first embodiment is formed, and a concave portion similar to the concave portion 51B of the first embodiment is formed on the lower surface of the valve body cap 20 as shown in FIG. 53B is formed.

When the valve body 31 is rotated by operating the operation handle 40 and the valve body 31 is moved upward as shown in FIG. 4 and the upper surface of the valve body 31 reaches a position where it contacts the lower surface of the valve body cap 20. Similarly to the moderation mechanism 51 in the first embodiment, the convex portion 53A (see FIG. 5) of the moderation mechanism 53 is fitted into one of the concave portions 53B (see FIG. 6) to make the operator feel a sense of moderation. At this time, the valve body 31 is at the maximum open position away from the valve seat portions 11B and 12B of the inflow port 11 and the outflow port 12.
On the other hand, when the operation handle 40 is operated to rotate the valve body 31 and move the valve body 31 downward, and when the lower surface of the operation handle 40 reaches a position where it contacts the upper surface of the valve body cap 20, the first embodiment Similar to the moderation mechanism 51 in the embodiment, the convex portion 52A of the moderation mechanism 52 fits into one of the concave portions 52B, and makes the operator feel a sense of moderation. At this time, the valve body 31 is in a closed completion position where the inflow port 11 and the outflow port 12 are closed.
Therefore, according to the second embodiment, when the valve body 31 is set to the maximum open position and when the valve body 31 is set to the closed completion position by the operation of the operation handle 40, the operator feels moderation respectively. Can make you feel.

<Third embodiment>
FIG. 7 shows a third embodiment of the present invention. The feature of the third embodiment with respect to the first embodiment is that a notch (penetration) is formed in a part of the outer periphery of the closing portion 32 of the valve body 31. Hole) 32B is formed. When the notch 32B is inserted into the valve body 10 as in the first embodiment, as shown in FIG. 1, the notch 32B communicates between the sealed spaces 13 and 14 when the valve body 31 is in the closed completion position. It is a through hole. Although the other configurations are different in detail, the portions related to the essence of the invention are the same. Therefore, the portions that are essentially the same between the two are assigned the same reference numerals and the description thereof is omitted.
According to the third embodiment, since the through hole 32B is formed as described above, when the fluid flowing through the valve body 10 (see FIG. 1) is incompressible, for example, oil, 1, when the valve body 31 is at the closing completion position, the valve body 31 can be smoothly moved by the communication between the sealed spaces 13 and 14 through the through-hole 32 </ b> B. If the through hole 32B is not formed, the valve body 31 cannot move due to the pressure of the incompressible fluid filled in each of the sealed spaces 13 and 14, but in this embodiment, The problem can be suppressed.

<Fourth embodiment>
8 and 9 show a fourth embodiment of the present invention. The fourth embodiment is characterized by the fact that the moderation mechanism 52 in the second embodiment has a moderation to the operation handle 40. Whereas the moderation mechanism 54 in the fourth embodiment not only gives a feeling of moderation, it also adds a function of stopping the operation of the operation handle 40 as well as giving the operation handle 40 a sense of moderation. Although the other configurations are different in detail, the portions related to the essence of the invention are the same. Therefore, the portions that are essentially the same between the two are assigned the same reference numerals and the description thereof is omitted.
For this reason, only one convex portion 52A of the moderation mechanism 52 in the second embodiment is formed on the upper end surface of the valve body cap 20, but the convex portion 54A of the moderation mechanism 54 in the fourth embodiment is formed on the valve body cap 20. On the upper end surface, a plurality of (for example, 15) rings are formed corresponding to the plurality of recesses 54B formed on the lower surface of the operation handle 40. Here, the recess 54B has the same structure as the recess 51B in the first embodiment.
When the convex portion 54A is fitted into the concave portion 54B, the feeling of moderation is transmitted to the operation handle 40 as in the case of the moderation mechanisms 51 to 53 described above, and at the same time, the plurality of convex portions 54A are fitted into the plurality of concave portions 54B. Therefore, it is difficult to operate the operation handle 40 any more, and the operation of the operation handle 40 is stopped at that position.

In the state of FIG. 8, the closing portion 32 of the valve body 31 is in contact with the valve seat portions 11B and 12B of the inflow port 11 and the outflow port 12 to block communication between the inflow port 11 and the outflow port 12. At this time, the convex portion 54A of the moderation mechanism 54 is not yet fitted in the concave portion 54B. If the operation handle 40 is further operated from this state to move the valve body 31 downward, the closing portion 32 will be strongly abutted against the valve seat portions 11B and 12B while being deformed, and eventually the convex portion 54A of the moderation mechanism 54 will be brought about. Fits into the recess 54B. In this state, the operation of the operation handle 40 is stopped. Therefore, in the fourth embodiment, the operation of the operation handle 40 is stopped by setting the position where the valve body 31 is further in contact with the valve seat portions 11B and 12B as the closing completion position.
In FIG. 8, the line indicated by “L” indicates the position of the fastening surface (see FIG. 9) between the valve body cap 20 and the valve body 10 by the bolt 21 and the nut 22. In FIG. 8, the boundary line between the valve body cap 20 and the valve body 10 appears to be below the line L. This shows that the convex part and the recessed part are formed in the fastening surface of the valve main body cap 20 and the valve main body 10 of the cross-sectional position of FIG. That is, the fastening surface between the valve body cap 20 and the valve body 10 in the fourth embodiment is formed as a flat surface as a whole, but a convex portion is formed on the lower surface of the valve body cap 20 at the cross-sectional position in FIG. A recess is formed on the upper surface of the main body 10. Thus, the convex part is fitted in the concave part, thereby preventing the valve body cap 20 from rotating relative to the valve body 10.

As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. For example,
1. The on-off valve of the present invention may be a three-way valve instead of the two-way valve as in each embodiment.
2. The arrangement of the convex portions and the concave portions constituting the moderation mechanism can be interchanged with each other.
3. The number of recesses constituting the moderation mechanism may not be provided as in each embodiment, but only one.
4). Even if each fluid port is not arranged opposite to each other as in each embodiment, the other fluid port may be arranged in a horizontal plane or in a direction outside the horizontal plane with respect to one fluid port.
5. Various fluids such as gas, air, water, and oil can be applied as the fluid controlled by the on / off valve.
6). The valve body and the valve body constituting the on-off valve are not formed of resin as in each embodiment, but may be formed of metal such as iron or aluminum.

10 Valve body 11 Inflow port (flow path)
11A Connection part 11B Valve seat part 12 Outflow port (flow path)
12A Connection part 12B Valve seat part 13 Sealed space 14 Sealed space 20 Valve body cap (fixed body)
21 Bolt 22 Nut 31 Valve body (operating body)
32 Closure part 32A Convex surface 32B Through hole (notch)
33 Valve body rod 34 Screw 40 Operation handle 41 Screw 51 Moderation mechanism 51A Convex portion 51B Concavity 52 Moderation mechanism 52A Convex portion 52B Concavity 53 Moderation mechanism 53A Convex portion 53B Concavity 54 Moderation mechanism 54A Convex portion 54B Concavity

Claims (2)

In an on-off valve in which a rotation operation of 360 degrees or more of the operation handle with respect to the valve body is converted into a linear motion, and the valve body is operated by the linear motion to open and close the valve,
Are relatively rotated with each other, and the operating tool interlocking the operating handle or to, detent mechanism is provided between the fixed body integrated with the valve Body, nodal degree mechanism, said operating handle or operating body while the convex portion of the fixed body, the other recess is formed in, so as to correspond to at least the closing completion position location of said valve body, said convex portion is fitted against the concave portion,
The valve body communicates with the valve body, includes the entire opening range of the flow path opened and closed by the valve body, and opens and closes the flow path on a wider surface with respect to the direction of the linear motion. It is formed by an inclined surface, and the inclined surface is formed by an elastic body,
Further, the inclined surface is formed as a convex surface that swells toward the flow channel before the flow channel is closed, and the convex portion of the moderation mechanism is fitted into the concave portion at the position where the valve body is closed. In this state, the on-off valve is characterized in that the convex surface is deformed and abuts the opening of the flow path to close the flow path . In claim 1 ,
An open / close valve in which a sealed space is formed between the valve body and the valve body when the valve body is in a closed position;
In the valve body, a through hole leading to the sealed space is opened by forming a notch in a part of the outer periphery of the valve body, and the valve body is opened from the closed completion position in the valve body. The on-off valve is configured to allow fluid in the sealed space to flow through the through hole.

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