CN213451823U - Lip-shaped sealing double-piston valve seat structure - Google Patents
Lip-shaped sealing double-piston valve seat structure Download PDFInfo
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- CN213451823U CN213451823U CN202021501192.1U CN202021501192U CN213451823U CN 213451823 U CN213451823 U CN 213451823U CN 202021501192 U CN202021501192 U CN 202021501192U CN 213451823 U CN213451823 U CN 213451823U
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- lip
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- sealing
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Abstract
The utility model relates to a lip-shaped sealing double-piston valve seat structure, which comprises a valve body and a ball body, wherein a valve seat is slidably installed in a cavity of the valve body, a sealing ring is arranged on the abutting end of the valve seat, a first assembling surface and a second assembling surface are arranged in the axial direction of the valve seat, a lip-shaped sealing assembly which is in sliding sealing with the valve body is arranged on the first assembling surface, and a graphite packing which is in sliding sealing with the valve body is arranged on the second assembling surface; the lip-shaped sealing assembly comprises a support ring sleeved on the first assembly surface, an inner O-shaped ring and an outer O-shaped ring are sleeved on the inner side and the outer side of the support ring respectively, and a left lip-shaped sealing press ring and a right lip-shaped sealing press ring are arranged at the left end and the right end of the support ring respectively. The lip-shaped sealing double-piston valve seat is reasonable and simple in structural design, the valve seat can flexibly float in the valve body and realize bidirectional reliable sealing, the defects of other sealing modes are overcome, and the lip-shaped sealing double-piston valve seat is high in practicability.
Description
Technical Field
The utility model relates to a ball valve technical field, in particular to lip seal double piston disk seat structure.
Background
The ball valve structure usually comprises parts such as valve body, spheroid and disk seat, and the performance of ball valve is influenced to the sealed effect of disk seat and valve body, how in the limited lumen space of valve body, both must guarantee that disk seat and valve body are effectively sealed, can make the disk seat nimble float reach effective sealing with between the spheroid, be a problem that remains to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: in order to overcome the defects of the prior art, a lip-shaped sealing double-piston valve seat structure is provided.
In order to achieve the above technical effect, the utility model discloses a technical scheme is: a lip-shaped sealing double-piston valve seat structure comprises a valve body and a ball body, wherein a valve seat is slidably mounted in a cavity of the valve body, a sealing ring is arranged at the abutting end of the valve seat, a first assembling surface and a second assembling surface are arranged in the axial direction of the valve seat, a lip-shaped sealing assembly in sliding sealing with the valve body is arranged on the first assembling surface, and a graphite packing in sliding sealing with the valve body is arranged on the second assembling surface;
lip seal assembly establishes the lock ring on first assembly face including the cover, the inside and outside both sides of lock ring are overlapped respectively and are equipped with inside and outside O shape circle, and both ends are provided with left and right lip seal clamping ring respectively about it, the distribution of staggering in position of inside and outside O shape circle, left and right lip seal clamping ring is with the mode suit of back to back on first assembly face.
Further, the first assembling surface and the second assembling surface form a step structure at the joint, and the step structure and the valve seat form an oil cavity.
Furthermore, an oil filling hole and an oil guide hole which are communicated with the oil cavity are respectively arranged on the valve body and the valve seat.
Furthermore, an annular graphite groove is formed in the second assembling surface, and the graphite packing is arranged in the graphite groove.
Further, a spring is arranged between the abutting end and the valve body, and the stretching direction of the spring is consistent with the axial direction of the valve seat.
Furthermore, a spring groove is formed in the valve body, the spring is arranged in the spring groove, and the spring partially extends out of the spring groove and pushes the abutting end against the ball body.
Further, the sealing ring is made of PEEK materials.
Compared with the prior art, the beneficial effects of the utility model are that: the valve seat can flexibly float in the valve body and realize bidirectional reliable sealing, overcomes the defects of other sealing modes, and has strong practicability.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.
Drawings
Fig. 1 is a schematic structural view of a lip seal double-piston valve seat structure of the present invention;
fig. 2 is a schematic structural diagram of the valve seat of the present invention.
The reference numbers and corresponding designations in the drawings are: 1. the oil-gas valve comprises a valve body, a ball body, a valve seat, a sealing ring, a graphite packing, a support ring, an inner O-shaped ring, an outer O-shaped ring, a left lip-shaped sealing press ring, a right lip-shaped sealing press ring, a support ring, an oil cavity, a spring, an oil filler hole, an oil groove, a spring groove, a supporting end, a.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1-2, the present embodiment provides a lip-seal double-piston valve seat structure, which includes a valve body 1 and a ball body 2, a valve seat 3 is slidably mounted in a cavity of the valve body 1, a sealing ring 4 is disposed on an abutting end 301 of the valve seat 3, a first assembling surface 302 and a second assembling surface 303 are disposed in an axial direction of the valve seat 3, a lip-seal assembly slidably sealed with the valve body 1 is disposed on the first assembling surface 302, and a graphite packing 5 slidably sealed with the valve body 1 is disposed on the second assembling surface 303;
the lip-shaped sealing assembly comprises a supporting ring 6 sleeved on the first assembling surface 302, inner and outer O- shaped rings 7 and 8 are sleeved on the inner side and the outer side of the supporting ring 6 respectively, left and right lip-shaped sealing press rings 9 and 10 are arranged at the left end and the right end of the supporting ring respectively, the positions of the inner and outer O- shaped rings 7 and 8 are distributed in a staggered mode, and the left and right lip-shaped sealing press rings 9 and 10 are sleeved on the first assembling surface 302 in a back-to-back mode.
In this embodiment, the sealing ring 4 is sealed with the ball 2, the support ring 6 and the inner and outer O- rings 7 and 8 are combined to form a piston ring of the valve seat 3, so that the valve seat 3 can flexibly float, the left and right lip-shaped sealing press rings 9 and 10 can perform bidirectional sealing between the valve seat 3 and the valve body 1, and the graphite packing 5 can perform fireproof sealing.
Compared with the existing valve seat structure, the structure can not generate the phenomenon that the valve seat 3 is inflexible and easy to clamp due to overlarge pre-tightening specific pressure caused by graphite sealing; and the whole applicable temperature and the applicable medium of the valve are not completely limited by the O-shaped ring.
Further, the first assembling surface 302 and the second assembling surface 303 form a stepped structure at the junction, and the stepped structure forms an oil chamber 11 with the valve seat 3; wherein, the valve body 1 and the valve seat 3 are respectively provided with an oil filling hole 101 and an oil guiding hole 304 which are communicated with the oil chamber 11. Through the oil injection hole 101 on the valve body 1, grease can be injected into the oil cavity 11 in time and flows to the sealing ring 4 along the oil guide hole 304, so that the sealing ring 4 is prevented from being dry and astringent, and the sealing performance of the sealing ring is ensured.
Further, the second mounting surface 303 is provided with an annular graphite groove 305, and the graphite packing 5 is disposed in the graphite groove 305. In order to facilitate the installation of the graphite packing 5.
Further, a spring 12 is arranged between the abutting end 301 and the valve body 1, and the expansion direction of the spring 12 is consistent with the axial direction of the valve seat 3; wherein, the valve body 1 is provided with a spring groove 102, the spring 12 is arranged in the spring groove 102, and the spring 12 partially extends out of the spring groove 102 and presses the abutting end 301 against the ball 2.
Further, the seal ring 4 is made of PEEK material. The sealing ring 4 made of PEEK material has excellent mechanical property, and has the advantages of high temperature resistance, corrosion resistance, high stability and the like.
In conclusion, the sealing structure has reasonable and simple design and good sealing performance and flexibility, can overcome the defects existing in other sealing modes, and realizes effective sealing of the valve.
The present invention is not limited to the above specific embodiments, and for those skilled in the art, the above conception can be used without any creative work, and all the changes made fall within the protection scope of the present invention.
Claims (7)
1. The lip-shaped sealing double-piston valve seat structure comprises a valve body (1) and a ball body (2), and is characterized in that a valve seat (3) is slidably mounted in a cavity of the valve body (1), a sealing ring (4) is arranged on an abutting end (301) of the valve seat (3), a first assembling surface (302) and a second assembling surface (303) are arranged in the axial direction of the valve seat (3), a lip-shaped sealing assembly in sliding sealing with the valve body (1) is arranged on the first assembling surface (302), and a graphite packing (5) in sliding sealing with the valve body (1) is arranged on the second assembling surface (303);
lip seal assembly establishes lock ring (6) on first assembly face (302) including the cover, the inside and outside both sides of lock ring (6) are overlapped respectively and are equipped with inside and outside O shape circle (7, 8), and both ends are provided with left and right lip seal clamping ring (9, 10) respectively about it, the distribution of staggering in the position of inside and outside O shape circle (7, 8), left and right lip seal clamping ring (9, 10) are in order to back the mode suit on first assembly face (302).
2. The lip seal dual piston valve seat structure according to claim 1, characterized in that the first mounting surface (302) and the second mounting surface (303) form a stepped structure at the junction, which forms an oil chamber (11) with the valve seat (3).
3. The lip seal double piston valve seat structure according to claim 2, wherein the valve body (1) and the valve seat (3) are provided with an oil filler hole (101) and an oil guide hole (304) communicating with the oil chamber (11), respectively.
4. The lip seal dual piston valve seat structure of claim 3, wherein the second mounting surface (303) is provided with an annular graphite groove (305), and the graphite packing (5) is disposed within the graphite groove (305).
5. The lip seal double piston valve seat structure according to claim 1, characterized in that a spring (12) is provided between the abutment end (301) and the valve body (1), the spring (12) extending and retracting in the same direction as the axial direction of the valve seat (3).
6. The lip seal double piston valve seat structure according to claim 5, characterized in that the valve body (1) is provided with a spring groove (102), the spring (12) being arranged in the spring groove (102), the spring (12) partly extending out of the spring groove (102) and pressing the abutment end (301) against the ball (2).
7. The lip seal dual piston valve seat structure of claim 1, wherein the seal ring (4) is made of PEEK material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021501192.1U CN213451823U (en) | 2020-07-27 | 2020-07-27 | Lip-shaped sealing double-piston valve seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021501192.1U CN213451823U (en) | 2020-07-27 | 2020-07-27 | Lip-shaped sealing double-piston valve seat structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213451823U true CN213451823U (en) | 2021-06-15 |
Family
ID=76306868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021501192.1U Active CN213451823U (en) | 2020-07-27 | 2020-07-27 | Lip-shaped sealing double-piston valve seat structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213451823U (en) |
-
2020
- 2020-07-27 CN CN202021501192.1U patent/CN213451823U/en active Active
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