CN203857078U - Binary-regulation ball valve sealing structure - Google Patents
Binary-regulation ball valve sealing structure Download PDFInfo
- Publication number
- CN203857078U CN203857078U CN201420225002.6U CN201420225002U CN203857078U CN 203857078 U CN203857078 U CN 203857078U CN 201420225002 U CN201420225002 U CN 201420225002U CN 203857078 U CN203857078 U CN 203857078U
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- valve
- seal
- seat
- valve gap
- groove
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Abstract
A binary-regulation ball valve sealing structure mainly comprises a valve deck, a seat cover and a valve block. The valve block and the seat cover are installed inside the valve deck to form a sealed cavity. An inlet is formed in the upper end of the valve deck. An outlet is formed in the lower end of the valve deck. Pressure regulating valves are installed at the inlet and the outlet respectively and connected with a pressure source which is a gas pressure source or a liquid pressure source. Sealing and reversing of a valve can be realized by regulating pressure entering the cavity of the valve. The binary-regulation ball valve sealing structure has the advantages that the structure is simple, operation is convenient, sealing performance is good, abrasion of sealing elements is small, the service life of the valve is long, and energy conservation and environmental friendliness are realized.
Description
Affiliated technical field
The utility model relates to a kind of ball valve of valve field, particularly relates to a kind of Ball valve of pipeline, belongs to valve technology field.
Background technique
In existing ball valve patented technology, the O-ring seal that the sealing of ball valve adopts polytetrafluoroethylmaterial material to make is conventionally embedded in valve piece one end, the thrust squeeze valve piece producing by valve gap or coil spring, makes O-ring seal and ball body of valve close contact realize sealing.This type of valve is owing to existing parts machining and assembly error in valve is produced, thereby adjustment is more difficult in the time that product carries out leakage test; In addition, valve because the reason sealing loads such as ring wear, spring fatigue reduce, causes valve leak after running after a while.Simultaneously in the time that valve commutate, have driving force large, seal ring damage easy to wear, have working life short with maintaining high in cost of production deficiency.
Summary of the invention
For overcoming the deficiencies in the prior art, the utility model provides a kind of novel ball valve sealing structure, by the pressure in regulating valve cavity, realizes sealing and the commutation of valve.Have simple in structure, easy to operate, good seal performance, sealing part abrasion is little, the feature of valve long service life and energy-conserving and environment-protective.
The technical solution of the utility model is:
The ball valve sealing structure that a kind of binary regulates, comprise valve gap, cover for seat and valve piece, described valve gap has import in its valve gap upper end, there is outlet valve gap lower end, import and export is all equipped with pressure regulator valve, pressure regulator valve is connected with pressure source, pressure source can adopt gas or liquid, on the interior edge face of valve gap, there is seal groove, in groove, place O RunddichtringO, valve piece and cover for seat are contained in valve gap, composition seal chamber, described cover for seat is T-shaped flange body, on its cylinder, have seal groove, O RunddichtringO is housed in groove, cover for seat is fixed on valve gap interior edge face, described valve piece is a cylindrical body, at front-end face, ring-like seal ring is housed, O-ring seal contacts with ball body of valve, on its external cylindrical surface, have seal groove and circular groove, seal groove is built-in with O RunddichtringO, be equipped with multiple Φ 8.5 holes at ear end face, in hole, place coil spring, and communicate with circular groove, valve packaged enter composition seal chamber in valve gap and cover for seat.
Using method of the present utility model:
Other component of the utility model and ball body of valve and valve carry out leakage test after having assembled, in the time of leakage test, the import of the upper end of valve gap is connected pressure regulator valve with the outlet of lower end, pressure regulator valve and pressure source are connected, now pressurized gas or liquid enter in the cavity of valve gap, valve piece and cover for seat composition, valve piece moves under the double action of pressure source and spring force, the sealing of combining closely of the O-ring seal of valve build portion and ball body of valve, regulate inlet and outlet pressure, change the pressure of O-ring seal to ball body of valve, realize sealing and the commutation of valve.
When after valve long-term work because of ring wear, when spring force the reason such as reduces and causes sealing load not enough, strengthen inlet pressure by pressure regulator valve, make up the deficiency of spring force, make valve once in optimal seal, strengthened the reliability of valve working.
In the time that valve commutates, reduce the pressure in valve cavity by outlet port pressure regulator valve, O-ring seal reduces the pressure of ball body of valve, and the reversing force of valve is refused to reduce, and the wearing and tearing of seal ring reduce, and have extended valve working life.
The beneficial effects of the utility model are: the required sealing load of this valve seal is to produce under the elastic force of coil spring and the double action of gas or fluid pressure.Owing to having error in product manufacture, after each individual valve is produced and assembled, need different sealing loads just can guarantee the sealing of valve.The utility model is by regulating the pressure in seal chamber, change the sealing load of valve, thereby more effectively guarantee the sealing of valve, reduce valve reversing force and reduced ring wear, having the utlity model has simple in structure, reliable operation, production and maintenance cost is low and the advantage of long service life.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further described.
This figure is the utility model structural drawing.
In the drawings, 1, ball body of valve, 2, O-ring seal, 3. valve gap, 4.O RunddichtringO, 5. valve piece, 6 coil springs, 7.O RunddichtringO, 8. cover for seat, 9.O RunddichtringO.
Embodiment
In the seal groove of valve gap 3, put into O RunddichtringO 9, put into O RunddichtringO 7 in the seal groove of cover for seat 8, cover for seat 8 is fixedly connected on the inner side surface of valve gap 3.O-ring seal 2 is loaded on the front end of valve piece 5, O RunddichtringO 4 packs in the seal groove of valve piece, in the spring eye of valve piece rear end, pack coil spring 6 into, then together pack valve gap and cavity that cover for seat forms into, ball body of valve 1 and a complete valve of other component assembling composition.The import of valve gap upper end, the outlet of valve gap lower end connects pressure regulator valve, and pressure regulator valve cut-in pressure source, in the time that valve enters leakage test and operation.Adopt manual tune or automatic control system, regulate the inlet and outlet pressure of pressure regulator valve, realize valve optimal seal and commutation effect.
Claims (3)
1. the ball valve sealing structure that binary regulates, comprise valve gap, cover for seat and valve piece, described valve gap has import in its valve gap upper end, and there is outlet valve gap lower end, and import and export is all equipped with pressure regulator valve, pressure regulator valve is connected with pressure source, pressure source can adopt gas or liquid, on the interior edge face of valve gap, has seal groove, places O RunddichtringO in groove, valve piece and cover for seat are contained in valve gap, composition seal chamber.
2. the ball valve sealing structure that a kind of binary according to claim 1 regulates, is characterized in that; Described cover for seat is T-shaped flange body, on its cylinder, has seal groove, and O RunddichtringO is housed in groove, and cover for seat is fixed on valve gap interior edge face.
3. the ball valve sealing structure that a kind of binary according to claim 1 regulates, it is characterized in that: described valve piece is a cylindrical body, at front-end face, ring-like seal ring is housed, O-ring seal contacts with ball body of valve, has seal groove and circular groove on its external cylindrical surface, and seal groove is built-in with O RunddichtringO, be equipped with multiple Φ 8.5 holes at ear end face, in hole, place coil spring, and communicate with circular groove, valve packaged enter composition seal chamber in valve gap and cover for seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225002.6U CN203857078U (en) | 2014-04-27 | 2014-04-27 | Binary-regulation ball valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225002.6U CN203857078U (en) | 2014-04-27 | 2014-04-27 | Binary-regulation ball valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203857078U true CN203857078U (en) | 2014-10-01 |
Family
ID=51606928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225002.6U Expired - Fee Related CN203857078U (en) | 2014-04-27 | 2014-04-27 | Binary-regulation ball valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203857078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455522A (en) * | 2014-12-30 | 2015-03-25 | 苏州福润机械有限公司 | Cock valve |
-
2014
- 2014-04-27 CN CN201420225002.6U patent/CN203857078U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455522A (en) * | 2014-12-30 | 2015-03-25 | 苏州福润机械有限公司 | Cock valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20180427 |