CN2466452Y - Seal structure of ball valve - Google Patents
Seal structure of ball valve Download PDFInfo
- Publication number
- CN2466452Y CN2466452Y CN 01210894 CN01210894U CN2466452Y CN 2466452 Y CN2466452 Y CN 2466452Y CN 01210894 CN01210894 CN 01210894 CN 01210894 U CN01210894 U CN 01210894U CN 2466452 Y CN2466452 Y CN 2466452Y
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- Prior art keywords
- valve seat
- valve
- utility
- model
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a sealing structure for a ball valve. The utility model comprises a valve body, a valve seat, and a valve core. The valve seat is arranged in a notch for the valve seat, which is preset on the inner wall of the valve body. The utility model is characterized in that the valve seat is a memory sealing valve seat; the valve core is pressed near the valve seat; the valve seat forms a stretching type; the abutted surface of the valve seat and one side of the notch for the valve seat is a conical surface. Compared with the existing sealing structure for a ball valve, the utility model overcomes the defects of small elastic range, sensitivity for cold flow, and easy leakage under low pressure states. The utility model has the advantages of simple structure, reliable seal, and long service life.
Description
The utility model relates to a kind of ball valve sealing structure.
Ball valve is to make open-shut device with the ball core of manhole, and the ball core rotates with valve rod, to realize the valve of switching motion.It is little that ball valve has fluid resistance, opens and closes rapidly, and the better simply advantage of structure is widely used in the control unit of making pipeline fluid in the various career fields.Traditional ball valve generally adopts the soft seal valve seat, and its sealing mechanism relies on external force to produce seal pressure on the ball core and the contact surface of valve seat and realizes.Existing ball seat structure is nonelastic valve seat and pressurized elastic seat, exists the numerous sense of cold flow, and elastic range is little, and the low pressure operating mode can be leaked, and valve seat easily packed tightly shortcomings such as ball core when temperature raise.
The purpose of this utility model is the above-mentioned defective that overcomes prior art, thereby a kind of simple in structure, good seal performance, the growth ball valve sealing structure in working life is provided.
The utility model comprises valve body, valve seat and spool, and valve seat is arranged in the valve seat groove that valve interior wall presets, and valve seat is the close seat of memory sealing, and spool presses valve seat, and valve seat forms the stretching shape, and a side faying surface of valve seat and valve seat groove is the conical surface.
Below in conjunction with drawings and Examples detailed content of the present utility model is described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the I portion enlarged view of Fig. 1.
As shown in the figure, the utility model comprises valve body 1, valve seat 2 and spool 3, and valve seat 2 is arranged in the valve seat groove 4 that valve body 1 inwall presets, valve seat is the memory seal valve seat, spool 3 is pressed against on the valve seat 2, makes valve seat 2 be in extended state, and valve seat 2 is the conical surface with a side faying surface of valve seat groove 4.Spool 3 flattens valve seat 2 when assembling, makes valve seat 2 produce the elasticity of recovering original shape, thereby realizes reliable sealing.
The utility model has the following advantages by above-mentioned concrete structure: 1, memory seal valve The seat elastic range is big, and the tension state intensity high life is long, and even absolute two way seal is true Also positiver sealing under the empty and low pressure, no cold flow phenomenon. But the wearing and tearing of 2 automatic compensation sealing faces The change in size that fluctuation causes with pressure and temp, thus the sealing of real Shen is reliable, switching torque is equal Even.
Claims (1)
1, a kind of ball valve sealing structure, comprise valve body, valve seat and spool, valve seat is arranged in the valve seat groove that valve interior wall presets, it is characterized in that valve seat (2) is the memory seal valve seat, spool (3) presses valve seat (2), valve seat (2) forms the stretching shape, and valve seat (2) is the conical surface with a side faying surface of valve seat groove (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210894 CN2466452Y (en) | 2001-02-26 | 2001-02-26 | Seal structure of ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210894 CN2466452Y (en) | 2001-02-26 | 2001-02-26 | Seal structure of ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2466452Y true CN2466452Y (en) | 2001-12-19 |
Family
ID=33630376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01210894 Expired - Fee Related CN2466452Y (en) | 2001-02-26 | 2001-02-26 | Seal structure of ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2466452Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518825A (en) * | 2011-11-27 | 2012-06-27 | 浙江欧斯特泵阀有限公司 | Hard sealing ball valve |
| CN105485367A (en) * | 2016-02-01 | 2016-04-13 | 无锡智能自控工程股份有限公司 | Memory alloy seal valve base structure of fixed ball valve |
-
2001
- 2001-02-26 CN CN 01210894 patent/CN2466452Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518825A (en) * | 2011-11-27 | 2012-06-27 | 浙江欧斯特泵阀有限公司 | Hard sealing ball valve |
| CN105485367A (en) * | 2016-02-01 | 2016-04-13 | 无锡智能自控工程股份有限公司 | Memory alloy seal valve base structure of fixed ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20011219 |