CN212564494U - Elastic pre-tightening valve seat for ultralow-temperature or normal-temperature ball valve - Google Patents
Elastic pre-tightening valve seat for ultralow-temperature or normal-temperature ball valve Download PDFInfo
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- CN212564494U CN212564494U CN202021257279.9U CN202021257279U CN212564494U CN 212564494 U CN212564494 U CN 212564494U CN 202021257279 U CN202021257279 U CN 202021257279U CN 212564494 U CN212564494 U CN 212564494U
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- spheroid
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Abstract
The utility model discloses an elasticity pretension disk seat for ultra-low temperature or normal atmospheric temperature ball valve, including the valve body, be equipped with the spheroid in the intracavity of valve body, the spheroid is connected through the floating valve pedestal with one side that the valve body is located the horizontal direction, the below of floating valve pedestal is equipped with the disk seat, be equipped with the back seal pretension piece between valve body and the floating valve pedestal, be equipped with the disk seat back seal between back seal pretension piece and the valve body, be equipped with the baffle between spheroid and the valve body, be equipped with the disk seat clamp plate between floating valve pedestal and the spheroid, be equipped with spring, main seal and main seal pretension briquetting in the intracavity of floating; the spring and the medium pressure of this structure can compress tightly the floating valve pedestal on the spheroid, realize the hard seal protection of a qualitative performance, still have fine sealed effect after valve seat and spheroid use wearing and tearing or thermal energy, reach the fire prevention purpose, but every spring independent work produces the pretightning force between valve seat and the spheroid, can compensate valve seat and spheroid because of the not enough influence to sealing performance of machining precision to increase of service life.
Description
Technical Field
The utility model relates to a ball valve disk seat, in particular to elasticity pretension disk seat for ultra-low temperature or normal atmospheric temperature ball valve.
Background
The ultralow temperature ball valve is manufactured at normal temperature, and a valve used in an ultralow temperature environment is formed by deforming all materials at low temperature due to temperature, and completely losing and damaging part of the materials at low temperature, so that the problems of leakage, damage and the like easily occur to the valve manufactured and tested at normal temperature in the ultralow temperature environment.
The current technology is that 1 main seal and 1 ~ 2 back seals are generally set up respectively on every disk seat, and the main seal is used for realizing the ball seal with the spheroid contact, and the back seal is used for the sealed between disk seat and the valve body, and the main and auxiliary seal mostly is the general stopper type of built-in spring, and this kind of sealing washer not only requires high to the use material, and life is low, the price is expensive moreover, and the manufacturing degree of difficulty is high, generally only can produce by the professional sealing member manufacturer of entrusting.
SUMMERY OF THE UTILITY MODEL
The utility model provides an elasticity pretension disk seat for ultra-low temperature or normal atmospheric temperature ball valve is used for overcoming among the prior art among the ultra-low temperature ball valve sealing washer life low, the price is expensive, makes the defect that the degree of difficulty is high.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model discloses an elastic pre-tightening valve seat for an ultra-low temperature or normal temperature ball valve, which comprises a valve body, wherein a ball body is arranged in the cavity of the valve body, the ball body is connected with one side of the valve body in the horizontal direction through a floating valve seat body, and a valve seat is arranged below the floating valve seat body;
a rear sealing pre-tightening block is arranged between the valve body and the floating valve seat body, the rear sealing pre-tightening block is connected to the valve body through a fastening piece, and a valve seat rear seal is arranged between the rear sealing pre-tightening block and the valve body;
a baffle is arranged between the ball body and the valve body and fixedly connected to the valve body through bolts;
a valve seat pressing plate is arranged between the floating valve seat body and the ball body and is connected with the floating valve seat body through a fastener;
the intracavity of the floating valve seat body is provided with a spring, the main seal is positioned on one side close to the ball body on the same horizontal line, and the main seal pre-tightening pressing block is close to one side of the spring.
Furthermore, the main seal pre-tightening pressing block is in inclined plane contact with the main seal, so that an inner hole of the main seal is tightly pressed with the valve seat, and a sealing effect is generated.
Furthermore, the back seal of the valve seat and the back seal pre-tightening block are in inclined plane contact, so that the back seal pre-tightening block and the floating valve seat body are effectively sealed.
Furthermore, the springs are uniformly distributed at the rear end of the valve seat, and each spring can independently generate pretightening force acting between the valve seat and the ball body.
The utility model discloses the beneficial effect who reaches is: the spring and medium pressure of the structure can continuously press the floating valve seat body on the ball body, so that hard sealing protection with a certain performance is realized, and the aim of fire prevention is fulfilled; when the valve seat and the ball body are worn or thermally expanded, a good sealing effect can still be achieved; the springs are uniformly distributed at the rear end of the valve seat, each spring can independently generate pretightening force between the valve seat and the ball body, the influence of insufficient machining precision on the sealing performance of the valve seat and the ball body can be compensated, and the service life is prolonged.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an enlarged schematic view of the present invention at a in fig. 1.
In the figure: 1. a valve body; 2. a sphere; 3. a floating valve seat body; 4. a spring; 5. sealing the valve seat; 6. then sealing the pre-tightening block; 7. a main sealing pre-tightening pressing block; 8. primary sealing; 9. a baffle plate; 10. a bolt; 11. a valve seat pressing plate; 12. a valve seat.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1
As shown in fig. 1-2, an elastic pre-tightening valve seat for an ultra-low temperature or normal temperature ball valve comprises a valve body 1, wherein a ball body 2 is arranged in a cavity of the valve body 1, the ball body 2 is connected with one side of the valve body 1 in the horizontal direction through a floating valve seat body 3, and a valve seat 12 is arranged below the floating valve seat body 3;
a rear sealing pre-tightening block 6 is arranged between the valve body 1 and the floating valve seat body 3, the rear sealing pre-tightening block 6 is connected to the valve body 1 through a fastener, and a valve seat rear seal 5 is arranged between the rear sealing pre-tightening block 6 and the valve body 1;
a baffle 9 is arranged between the ball body 2 and the valve body 1, and the baffle 9 is fixedly connected to the valve body 1 through a bolt 10;
a valve seat pressing plate 11 is arranged between the floating valve seat body 3 and the ball body 2, and the valve seat pressing plate 11 is connected with the floating valve seat body 3 through a fastener;
a spring 4 is arranged in a cavity of the floating valve seat body 3, a main seal 8 is positioned on one side close to the ball body 2 on the same horizontal line, and a main seal pre-tightening pressing block 7 is positioned on one side close to the spring 4.
One end of the spring 4 is pressed on the main seal pre-tightening pressing block 7, and the acting force of the spring is transmitted to the main seal 8, so that pre-tightening force is generated between the main seal 8 and the ball body 2 to achieve the initial sealing effect; the main seal pre-tightening pressing block 7 is in inclined contact with the main seal 8, the pre-tightening force of the spring 4 is transmitted on the main seal pre-tightening pressing block 7, and an axial centripetal force is generated on the main seal 8, so that an inner hole of the main seal 8 and the valve seat 12 are tightly pressed together, a sealing effect is generated, and leakage between the inner hole of the main seal and the valve seat is prevented; the other end of the spring 4 is contacted with the rear sealing pre-tightening block 6 to transmit the pre-tightening force of the spring to the valve seat rear seal 5, the valve seat rear seal 5 is also contacted with the rear sealing pre-tightening block 6 by adopting an inclined plane, and the rear sealing pre-tightening block 6 generates axial centripetal force to effectively seal the rear sealing pre-tightening block 6 and the floating valve seat body 3.
When fire occurs, the plastic valve seat 12 and the rear valve seat seal 5 are burnt, the spring 4 and the medium pressure can continuously press the floating valve seat body 3 on the ball body 2, and hard seal protection with certain performance is realized, so that the aim of fire prevention is fulfilled; when the valve seat 12 and the ball 2 are worn or thermally expanded, a good sealing effect can still be achieved; the springs 4 are uniformly distributed at the rear end of the valve seat 12, each spring 4 can independently generate pretightening force acting between the valve seat 12 and the ball body 2, and the influence of insufficient machining precision on the sealing performance of the valve seat 12 and the ball body 2 can be compensated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An elastic pre-tightening valve seat for an ultralow-temperature or normal-temperature ball valve is characterized by comprising a valve body, wherein a ball body is arranged in a cavity of the valve body, the ball body is connected with one side of the valve body in the horizontal direction through a floating valve seat body, and a valve seat is arranged below the floating valve seat body;
a rear sealing pre-tightening block is arranged between the valve body and the floating valve seat body, the rear sealing pre-tightening block is connected to the valve body through a fastening piece, and a valve seat rear seal is arranged between the rear sealing pre-tightening block and the valve body;
a baffle is arranged between the ball body and the valve body and fixedly connected to the valve body through bolts;
a valve seat pressing plate is arranged between the floating valve seat body and the ball body and is connected with the floating valve seat body through a fastener;
the intracavity of the floating valve seat body is provided with a spring, the main seal is positioned on one side close to the ball body on the same horizontal line, and the main seal pre-tightening pressing block is close to one side of the spring.
2. An elastically pre-tensioned valve seat for an ultra-low temperature or normal temperature ball valve as claimed in claim 1, wherein the springs are uniformly distributed at the rear end of the valve seat, and each spring can independently generate a pre-tensioning force acting between the valve seat and the ball body.
3. The elastic pre-tightening valve seat for the ultra-low temperature or normal temperature ball valve as claimed in claim 1, wherein the main seal pre-tightening pressing block is in inclined contact with the main seal, so that an inner hole of the main seal is tightly pressed against the valve seat to generate a sealing effect.
4. An elastically pre-tensioned valve seat for an ultra-low temperature or normal temperature ball valve as claimed in claim 1, wherein the back seal of the valve seat and the back seal pre-tensioning block are in inclined contact with each other to effectively seal the back seal pre-tensioning block and the floating valve seat body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021257279.9U CN212564494U (en) | 2020-07-01 | 2020-07-01 | Elastic pre-tightening valve seat for ultralow-temperature or normal-temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021257279.9U CN212564494U (en) | 2020-07-01 | 2020-07-01 | Elastic pre-tightening valve seat for ultralow-temperature or normal-temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212564494U true CN212564494U (en) | 2021-02-19 |
Family
ID=74614252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021257279.9U Active CN212564494U (en) | 2020-07-01 | 2020-07-01 | Elastic pre-tightening valve seat for ultralow-temperature or normal-temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212564494U (en) |
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2020
- 2020-07-01 CN CN202021257279.9U patent/CN212564494U/en active Active
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