CN218992532U - Self-sealing exhaust valve - Google Patents
Self-sealing exhaust valve Download PDFInfo
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- CN218992532U CN218992532U CN202223555187.0U CN202223555187U CN218992532U CN 218992532 U CN218992532 U CN 218992532U CN 202223555187 U CN202223555187 U CN 202223555187U CN 218992532 U CN218992532 U CN 218992532U
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Abstract
The utility model discloses a self-sealing exhaust valve, which comprises a valve body and a valve cover connected to the valve body, wherein a valve cover plate capable of jacking the upper top surface of the valve body is connected to the valve cover, a through hole penetrating up and down is formed in the valve cover plate, a floating ball capable of blocking the through hole is arranged on the valve body, a sealing gasket is arranged on the valve cover plate, a stepped sealing hole which is enlarged from top to bottom is formed in the inner ring surface of the sealing gasket, a sealing ring lip which is integrally formed with the sealing gasket and takes a horn shape is arranged at the lower part of the sealing gasket, and the bottom diameter of the sealing ring lip is larger than the upper diameter. The utility model can adapt to fluids with different pressures and has the advantages of simple structure and good sealing effect.
Description
Technical Field
The utility model belongs to the technical field of self-sealing structures of exhaust valves, and particularly relates to a self-sealing exhaust valve.
Background
At present, the known exhaust valve consists of a valve body, a floating ball, a sealing gasket, a valve cover and other main parts, wherein the surface of an inner ring of the sealing gasket is horn-shaped, and the sealing principle is that the floating ball is pressed upwards by water pressure, so that the floating ball and the sealing gasket generate elastic force to realize sealing by rubber compression deformation. The valve has the defect that when the fluid pressure is smaller, the degree of fit between the floating ball and the sealing gasket is insufficient, so that the sealing performance of the valve is poor.
Disclosure of Invention
The utility model aims to provide a self-sealing exhaust valve which can be automatically applied to various pressures and can ensure tight sealing effect under different pressures.
In order to solve the technical problems, the self-sealing exhaust valve provided by the utility model comprises a valve body and a valve cover connected to the valve body, wherein a valve cover plate capable of jacking on the upper top surface of the valve body is connected to the valve cover, a through hole penetrating up and down is arranged on the valve cover plate, and a floating ball capable of plugging the through hole is arranged on the valve body, and the self-sealing exhaust valve is structurally characterized in that: the sealing gasket is arranged on the valve cover plate, a stepped sealing hole which is enlarged from top to bottom is formed in the inner annular surface of the sealing gasket, a sealing ring lip which is integrally formed with the sealing gasket and takes a horn shape is arranged at the lower part of the sealing gasket, and the bottom diameter of the sealing ring lip is larger than the diameter of the upper part of the sealing ring lip.
After adopting above-mentioned structure, owing to set up the ladder seal hole of above-mentioned structure on the sealing washer to set up the sealing ring lip of above-mentioned structure, when fluid pressure is less, the ball float can contact the sealing ring lip earlier, and sealing is realized to sealing ring lip and floater close fit, and when fluid pressure is great, the ball float can compress this sealing washer, and the surface of ball float can contact the ladder seal hole in proper order, realizes sealed tight effect. From the above description, it can be seen that the present utility model can automatically adapt to various pressure fluids, and has the advantage of good sealing effect.
As a specific structural form of the stepped sealing hole, the stepped sealing hole is an upper cylindrical hole, a conical hole with a smaller upper part and a larger lower part and a lower cylindrical hole which are distributed from top to bottom.
As a specific structural form of the sealing ring lip, the thickness of the sealing ring lip is gradually thinned from top to bottom, and an inner hole of the sealing ring lip is a taper hole with a small upper part and a large lower part.
As an improvement of the utility model, the central part of the sealing gasket is provided with an intermediate skeleton. The structure can ensure the installation strength of the sealing gasket, thereby ensuring the sealing effect.
As an improvement of the utility model, the overhanging end of the valve cover plate is provided with a ring edge for the outer circumferential surface of the sealing gasket to lean against, the bottom of the through hole and the bottom surface of the valve cover plate are arc-shaped chamfer angles, and the top of the inner ring of the sealing gasket is provided with an arc-shaped leaning part matched with the arc-shaped chamfer angles in shape. The structure can ensure the installation position of the sealing gasket and the sealing effect.
In conclusion, the utility model can adapt to fluids with different pressures and has the advantages of simple structure and good sealing effect.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is an enlarged view of region A of FIG. 1;
FIG. 3 is a schematic view of the valve cover plate of the embodiment of FIG. 1;
FIG. 4 is a schematic view of the sealing gasket of the embodiment of FIG. 1;
fig. 5 is a schematic diagram of a prior art exhaust valve when sealing between a sealing rubber ring and a floating ball.
Detailed Description
Referring to fig. 5, in the prior art, the exhaust valve also has a valve body, a valve cover, and a valve cover plate, wherein a seal hole penetrating up and down is provided on the valve cover plate, a floating ball 20 capable of sealing the seal hole is provided on the valve body, a seal ring 21 is connected on the valve cover plate, the inner ring surface of the seal ring 21 is a conical surface, and after the floating ball 20 is lifted by fluid and is propped against the seal ring 21, the surface of the floating ball 20 is attached to the conical surface, thereby realizing sealing. When the buoyancy of the fluid is insufficient or smaller, the degree of fit between the conical surface and the floating ball is insufficient, so that the problem of poor sealing performance of the valve is caused, namely that the exhaust valve in the prior art cannot adapt to sealing of different pressures.
Referring to fig. 1 to 4, the present utility model provides a self-sealing vent valve, which is described for convenience of description, and in this embodiment refers to the up-down direction of the paper surface in fig. 1, and the connection and installation described below may be understood as direct connection, or indirect connection, which means connection or installation between two members through an intermediate member.
Referring to fig. 1 to 4, the embodiment of the self-sealing exhaust valve provided by the utility model comprises a valve body 1 and a valve cover 2 connected to the valve body 1, wherein a valve cover plate 3 capable of jacking the upper top surface of the valve body 1 is connected to the valve cover 2, a through hole 4 penetrating up and down is formed in the valve cover plate 3, a floating ball 5 capable of plugging the through hole 4 is arranged on the valve body 1, a sealing gasket 6 is arranged on the valve cover plate 3, the specific installation structure is that the overhanging end of the valve cover plate 3 is provided with a ring edge 31 for the outer circumferential surface of the sealing gasket 6 to abut against, the bottom of the through hole 4 and the bottom surface of the valve cover plate 3 are arc-shaped chamfers, and the top of an inner ring of the sealing gasket 6 is provided with an arc-shaped abutting part 63 matched with the arc-shaped chamfers. In this embodiment, the inner ring surface of the sealing gasket 6 is provided with a stepped sealing hole 61 that is enlarged from top to bottom, the stepped sealing hole 61 is an upper cylindrical hole, a tapered hole with a smaller upper part and a larger lower part, and a lower cylindrical hole that are arranged from top to bottom, that is, when the fluid pressures are different, the surfaces of the floating ball respectively prop against the lower cylindrical hole, the tapered hole and the upper cylindrical hole, for example, when the fluid pressure reaches a certain value, the floating ball props against the lower cylindrical hole to deform the whole sealing gasket until the surface of the floating ball is attached to the tapered hole, so that a better sealing effect is achieved, and other pressure conditions are not described one by one. The center portion of the sealing gasket 6 has an intermediate skeleton.
Referring to fig. 1 to 4, the lower portion of the sealing gasket 6 is provided with a sealing ring lip 62 integrally formed with the sealing ring lip 62 and having a horn shape, the diameter of the bottom of the sealing ring lip 62 is larger than that of the upper portion, the thickness of the sealing ring lip 62 is gradually thinned from top to bottom, the inner hole of the sealing ring lip 62 is a taper hole with a small upper portion and a large lower portion, when the fluid pressure is relatively small, the surface of the floating ball can be abutted against the inner hole surface of the sealing ring lip, and the deformation of the sealing ring lip is relatively large due to the fact that the sealing ring lip is relatively thin, so that the sealing effect when the fluid pressure is small is ensured.
Referring to fig. 1 to 4, the structures in the drawings are schematic diagrams when the floating ball is jacked by the fluid, and in the structure of this embodiment, the surface of the floating ball 5 is easy to form a fit with the sealing ring lip, so that the processing precision of the floating ball is greatly reduced and the sealing performance under the condition of low pressure is improved.
The present utility model is not limited to the above-described embodiments, and it is within the scope of the present utility model to provide equivalent variations on the specific structures of the present utility model and to replace the components in the present utility model, as will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a self sealss discharge valve, includes valve body (1) and connects valve gap (2) on valve body (1), is connected with on valve gap (2) and can push up valve gap board (3) on the top surface on valve body (1), is equipped with through hole (4) that link up from top to bottom on valve gap board (3), be equipped with on valve body (1) and can shutoff floater (5) through hole (4), characterized by: the sealing device is characterized in that the valve cover plate (3) is provided with a sealing gasket (6), the inner ring surface of the sealing gasket (6) is provided with a stepped sealing hole (61) which is enlarged from top to bottom, the lower part of the sealing gasket (6) is provided with a sealing ring lip (62) which is integrally formed with the sealing ring lip and takes a horn shape, and the bottom diameter of the sealing ring lip (62) is larger than the upper diameter.
2. The self-sealing vent valve of claim 1 wherein: the stepped seal holes (61) are upper cylindrical holes, tapered holes with smaller upper parts and larger lower parts and lower cylindrical holes which are distributed from top to bottom.
3. The self-sealing vent valve of claim 1 wherein: the thickness of the sealing ring lip (62) is gradually thinned from top to bottom, and an inner hole of the sealing ring lip (62) is a taper hole with a small upper part and a large lower part.
4. The self-sealing vent valve of claim 1 wherein: the central part of the sealing gasket (6) is provided with an intermediate framework.
5. The self-sealing vent valve of any of claims 1-4 wherein: the outer extending end of the valve cover plate (3) is provided with a ring edge (31) for supporting the outer circumferential surface of the sealing gasket (6), the bottom of the through hole (4) and the bottom surface of the valve cover plate (3) are arc-shaped chamfer angles, and the top of the inner ring of the sealing gasket (6) is provided with an arc-shaped leaning part (63) matched with the arc-shaped chamfer angles in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223555187.0U CN218992532U (en) | 2022-12-30 | 2022-12-30 | Self-sealing exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223555187.0U CN218992532U (en) | 2022-12-30 | 2022-12-30 | Self-sealing exhaust valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218992532U true CN218992532U (en) | 2023-05-09 |
Family
ID=86195393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223555187.0U Active CN218992532U (en) | 2022-12-30 | 2022-12-30 | Self-sealing exhaust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218992532U (en) |
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2022
- 2022-12-30 CN CN202223555187.0U patent/CN218992532U/en active Active
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