CN219606164U - Valve cover double-sealing structure - Google Patents
Valve cover double-sealing structure Download PDFInfo
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- CN219606164U CN219606164U CN202320416066.3U CN202320416066U CN219606164U CN 219606164 U CN219606164 U CN 219606164U CN 202320416066 U CN202320416066 U CN 202320416066U CN 219606164 U CN219606164 U CN 219606164U
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- sealing
- valve cover
- valve body
- valve
- annular boss
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Abstract
The utility model relates to a valve cover double-sealing structure which comprises a valve body, a valve cover, a fixing piece, a sealing gasket and a sealing ring, wherein the valve cover is arranged on the valve body; the valve is characterized in that a fixing piece is arranged in the valve body, a first annular clamping groove is formed in the upper end of the fixing piece, a sealing ring is arranged at the junction of the first annular clamping groove, the valve body and the valve cover, metal sealing edges are respectively arranged at the inner edge, the outer edge and the outer edge of the lower end face of the sealing ring, and convex strips are respectively arranged on the metal sealing edges. The sealing ring made of graphite has better sealing performance, good rebound resilience, certain compensation performance and oxidation resistance and long service life; the sealing ring is provided with a metal sealing edge, so that the deformation resistance of the sealing ring is improved while the metal sealing is formed; the utility model has simple structure, convenient installation and strong practicability.
Description
Technical Field
The utility model belongs to the technical field of valve sealing, and relates to a valve cover double-sealing structure.
Background
The valve cover and the valve body are sealed by adopting a graphite winding gasket, so that the valve cover is applicable to most occasions, however, the graphite winding gasket has a certain loss on ignition at high temperature, and the winding gasket is woven by utilizing a stainless steel wire belt and a flexible graphite wire belt, so that the deformation resistance and the rollback are insufficient, the loss on ignition at high temperature cannot be compensated, if the valve body works at high temperature for a long time, the valve body and the valve cover can be sealed loose, and the conditions of loose sealing and medium leakage are caused.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, solve the problems of loose sealing and poor sealing of a valve cover under the high-temperature sealing working condition, and provide a double-sealing structure of the valve cover.
In order to achieve the above purpose, the following technical scheme is adopted:
the valve cover double-sealing structure comprises a valve body, a valve cover, a fixing piece, a sealing gasket and a sealing ring, wherein the valve cover is arranged on the valve body, a first annular boss is arranged below the valve cover, and the sealing gasket is arranged between the first annular boss and the valve body; the valve body is internally provided with a fixing piece, the upper end of the fixing piece is provided with a first annular clamping groove, a sealing ring is arranged in the first annular clamping groove, the inner edge, the outer edge and the outer edge of the lower end face of the sealing ring are respectively provided with a metal sealing edge, and the metal sealing edges are respectively provided with a convex strip.
Preferably, the fixing piece is provided with a second annular boss, and the second annular boss can be matched with the first annular boss.
Preferably, the valve body, the valve cover and the fixing piece are respectively provided with a first cavity, a second cavity and a third cavity at the intersection of every two, and the convex strips are respectively clamped among the first cavity, the second cavity and the third cavity.
Preferably, the first annular boss is provided with a second annular clamping groove, and the sealing gasket is sleeved in the second annular clamping groove.
Preferably, a third annular boss is arranged on the valve body, and the third annular boss can be matched with the first annular boss.
Preferably, the sealing ring is made of graphite, and the metal edge sealing is made of stainless steel.
Compared with the prior art, the utility model has the following advantages:
the sealing between the valve cover and the valve body is realized by utilizing the double sealing mode of the sealing ring and the sealing gasket, so that the sealing valve has better sealing performance, and the sealing ring made of graphite has good rebound resilience, certain compensation performance and oxidation resistance and long service life; the sealing ring is provided with a metal sealing edge, so that the deformation resistance of the sealing ring is improved while the metal sealing is formed; the utility model has simple structure, convenient installation and strong practicability.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged view at a in fig. 1.
FIG. 3 is a schematic view of the valve body, valve cover and fixture portion of the present utility model.
In the figure: 1. a valve body; 2. a valve cover; 3. a fixing member; 4. a sealing gasket; 5. a seal ring; 6. a first annular boss; 7. the first annular clamping groove; 8. metal edge sealing; 9. a convex strip; 10. a second annular boss; 11. a first cavity; 12. a second cavity; 13. a third cavity; 14. the second annular clamping groove; 15. and a third annular boss.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in fig. 1-3, the double-sealing structure of the valve cover comprises a valve body 1, a valve cover 2, a fixing piece 3, a sealing gasket 4 and a sealing ring 5, wherein the valve cover 2 is arranged on the valve body 1, a first annular boss 6 is arranged below the valve cover 2, the sealing gasket 4 is arranged between the first annular boss 6 and the valve body 1, and the sealing gasket 4 plays a sealing role on the valve cover 2 and the valve body 1;
a fixing piece 3 is arranged in the valve body 1, a first annular clamping groove 7 is formed in the upper end of the fixing piece 3, a sealing ring 5 is arranged in the first annular clamping groove 7, and the sealing ring 5 plays a role in sealing among the valve body 1, the valve cover 2 and the fixing piece 3;
the inner edge, the outer edge and the outer edge of the upper end face of the sealing ring 5 are respectively provided with a metal sealing edge 8, and the metal sealing edge 8 enables the sealing ring 8 to have better sealing performance and wear resistance; and convex strips 9 are respectively arranged on the metal edge sealing 8, and the convex strips 9 play a role in auxiliary sealing.
Further, the second annular boss 10 is arranged on the fixing piece 3, the second annular boss 10 can be matched with the first annular boss 6, and the second annular boss 10 is matched with the first annular boss 6, so that dislocation between the fixing piece 3 and the valve cover 2 is avoided, and assembly is facilitated.
Further, the valve body 1, the valve cover 2 and the fixing piece 3 are respectively provided with a first cavity 11, a second cavity 12 and a third cavity 13 at two-by-two intersections, the convex strips 9 are respectively clamped between the first cavity 11, the second cavity 12 and the third cavity 13, the convex strips 9 are matched with the cavities to form a seal, and the convex strips 9 made of metal have certain compensation performance, so that the valve body 1, the valve cover 2 and the fixing piece 3 are better in sealing performance under a high-temperature working condition.
Further, a second annular clamping groove 14 is formed in the first annular boss 6, and the sealing gasket 4 is sleeved in the second annular clamping groove 14.
Further, a third annular boss 15 is arranged on the valve body 1, the third annular boss 15 can be matched with the first annular boss 6, and the third annular boss 15 is matched with the first annular boss 6, so that the relative position between the valve body 1 and the valve cover 2 is fixed, and the valve body is free from shaking and is assembled.
Further, the sealing ring 5 is made of graphite, and the metal sealing edge 8 is made of stainless steel.
Working principle: according to the utility model, the sealing ring 5 is used as the first seal among the valve body 1, the valve cover 2 and the fixing piece 3, the sealing ring 5 is made of graphite, has good oxidation resistance and rebound compensation shape energy at high temperature, can meet the sealing requirement even if the sealing ring has a certain loss on ignition at high temperature, and adopts stainless steel for edge sealing, so that metal seal is formed and the deformation resistance is increased; and then the valve body and the valve cover are sealed by using a sealing gasket in an auxiliary way, so that the overall sealing performance is better.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.
Claims (6)
1. The utility model provides a valve gap double containment structure, includes valve body (1), valve gap (2), mounting (3), sealing gasket (4) and sealing ring (5), characterized by: a valve cover (2) is arranged on the valve body (1), a first annular boss (6) is arranged below the valve cover (2), and a sealing gasket (4) is arranged between the first annular boss (6) and the valve body (1); be provided with mounting (3) in valve body (1), first annular draw-in groove (7) have been seted up to mounting (3) upper end, are provided with sealing ring (5) in first annular draw-in groove (7), up end inner edge, outer fringe and the lower terminal surface outer fringe department of sealing ring (5) are provided with metal banding (8) respectively, be provided with sand grip (9) on metal banding (8) respectively.
2. The double-sealing structure of a valve cover according to claim 1, wherein: the fixing piece (3) is provided with a second annular boss (10), and the second annular boss (10) can be matched with the first annular boss (6).
3. The double-sealing structure of a valve cover according to claim 1, wherein: the valve body (1), the valve cover (2) and the fixing piece (3) are respectively provided with a first cavity (11), a second cavity (12) and a third cavity (13) at the intersection of every two, and the convex strips (9) are respectively clamped between the first cavity (11), the second cavity (12) and the third cavity (13).
4. The double-sealing structure of a valve cover according to claim 1, wherein: the first annular boss (6) is provided with a second annular clamping groove (14), and the sealing gasket (4) is sleeved in the second annular clamping groove (14).
5. The double-sealing structure of a valve cover according to claim 1, wherein: the valve body (1) is provided with a third annular boss (15), and the third annular boss (15) can be matched with the first annular boss (6).
6. The double-sealing structure of a valve cover according to claim 1, wherein: the sealing ring (5) is made of graphite, and the metal sealing edge (8) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320416066.3U CN219606164U (en) | 2023-03-07 | 2023-03-07 | Valve cover double-sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320416066.3U CN219606164U (en) | 2023-03-07 | 2023-03-07 | Valve cover double-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219606164U true CN219606164U (en) | 2023-08-29 |
Family
ID=87744773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320416066.3U Active CN219606164U (en) | 2023-03-07 | 2023-03-07 | Valve cover double-sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219606164U (en) |
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2023
- 2023-03-07 CN CN202320416066.3U patent/CN219606164U/en active Active
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