CN2861644Y - Tri-eccentric leakless butterfly valve - Google Patents
Tri-eccentric leakless butterfly valve Download PDFInfo
- Publication number
- CN2861644Y CN2861644Y CN 200520036992 CN200520036992U CN2861644Y CN 2861644 Y CN2861644 Y CN 2861644Y CN 200520036992 CN200520036992 CN 200520036992 CN 200520036992 U CN200520036992 U CN 200520036992U CN 2861644 Y CN2861644 Y CN 2861644Y
- Authority
- CN
- China
- Prior art keywords
- butterfly
- valve
- plate
- butterfly plate
- valve 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 triple eccentric non-leakage butterfly valve, which is aimed at resolving the problem of bad sealing effect of the current butterfly valves, a combining surface of a valve seat (3) and a butterfly plate (4) is a conical surface, the section place of the sealing surface of the valve seat (3) deviates from the central position of the butterfly plate (4) on which fixed with multi-layers of a sealing rings (5). The utility model uses a triple eccentric structure with the advantages of good sealing effect and long service life.
Description
Technical field:
The utility model relates to a kind of valve, especially three eccentric no leakage butterfly valves.
Background technique:
Butterfly valve is a kind of valve commonly used on the fluid-carrying lines, and the butterfly valve that uses generally is two eccentric structures at present, and promptly valve rod misalignment pipe center and valve rod misalignment butterfly plate center do not have angle between butterfly plate and the sealing surface of seat, and butterfly plate can pass valve seat.When carrying high-temp liquid in the pipeline, valve seat and butterfly plate all are heated and produce distortion, and the amount of deformation of valve seat easily produces between butterfly plate and the valve seat and leaks during greater than the amount of deformation of butterfly plate, sealing effect is poor, even can make valve plate pass valve seat when the switch valve plate and can't normally use.
The model utility content:
In order to overcome the deficiency of existing reed valve sealing effect difference, the utility model provides a kind of three eccentric no leakage butterfly valves, and this three eccentric no leakage butterfly valve adopts three eccentric structures, has the characteristics of good sealing effect and long service life.
The technical solution of the utility model is: this three eccentric no leakage butterfly valve comprises valve body and valve rod, have valve seat in the valve body, be connected with butterfly plate on the valve rod, the center of valve body and butterfly plate is departed from the center of valve rod respectively, the mating face of valve seat and butterfly plate is a conical surface, the central position of butterfly plate is departed from the sectional position of the sealing surface on the valve seat, is fixed with multi-layer sealing ring on the butterfly plate.
Above-mentioned multi-layer sealing ring is superposeed at interval by multilayer corrosion resistant plate and flexible graphite plate and forms, and multi-layer sealing ring is compressed by pressing plate and by being bolted on the butterfly plate.
The utlity model has following beneficial effect: owing to take such scheme, the mating face of valve seat and butterfly plate is a conical surface, the central position of butterfly plate is departed from the sectional position of the sealing surface on the valve seat, three eccentric structures have been formed, eliminated valve plate friction between multi-layer sealing ring and the valve seat in stroke, prolonged the working life of valve, multi-layer sealing ring fixing on the butterfly plate has certain elasticity and toughness, have compensating action, good sealing effect simultaneously to expanding with heat and contract with cold.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is partial enlarged drawings of A portion among Fig. 1.
1-valve body among the figure, 2-valve rod, 3-valve seat, 4-butterfly plate, 5-multi-layer sealing ring, 6-corrosion resistant plate, 7-flexible graphite plate, 8-pressing plate, 9-bolt.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, this three eccentric no leakage butterfly valve comprises valve body 1 and valve rod 2, have valve seat 3 in the valve body 1, be connected with butterfly plate 4 on the valve rod 2, the center of valve body 1 and butterfly plate 4 is departed from the center of valve rod 2 respectively, valve seat 3 is a conical surface with the mating face of butterfly plate 4, the central position of butterfly plate 4 is departed from the sectional position of the sealing surface on the valve seat 3, be fixed with multi-layer sealing ring 5 on the butterfly plate 4, multi-layer sealing ring 5 is superposeed at interval by multilayer corrosion resistant plate 6 and flexible graphite plate 7 and forms, and multi-layer sealing ring 5 is compressed by pressing plate 8 and is fixed on the butterfly plate 4 by bolt 9.
During actual the use, valve seat 3 is a conical surface with the mating face of butterfly plate 4, the central position of butterfly plate 4 is departed from the sectional position of the sealing surface on the valve seat 3, three eccentric structures have been formed, eliminated valve plate 4 friction between multi-layer sealing ring 5 and the valve seat 3 in stroke, prolonged the working life of valve, multi-layer sealing ring 5 fixing on the butterfly plate 4 has certain elasticity and toughness, have compensating action, good sealing effect simultaneously to expanding with heat and contract with cold.
Claims (2)
1, a kind of three eccentric no leakage butterfly valves, comprise valve body (1) and valve rod (2), have valve seat (3) in the valve body (1), be connected with butterfly plate (4) on the valve rod (2), the center of valve body (1) and butterfly plate (4) is departed from the center of valve rod (2) respectively, it is characterized in that: valve seat (3) is a conical surface with the mating face of butterfly plate (4), and the central position of butterfly plate (4) is departed from the sectional position of the sealing surface on the valve seat (3), is fixed with multi-layer sealing ring (5) on the butterfly plate (4).
2, according to claim 1 three eccentric no leakage butterfly valves, it is characterized in that: multi-layer sealing ring (5) is superposeed at interval by multilayer corrosion resistant plate (6) and flexible graphite plate (7) and forms, and multi-layer sealing ring (5) is compressed by pressing plate (8) and is fixed on the butterfly plate (4) by bolt (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036992 CN2861644Y (en) | 2005-12-29 | 2005-12-29 | Tri-eccentric leakless butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520036992 CN2861644Y (en) | 2005-12-29 | 2005-12-29 | Tri-eccentric leakless butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2861644Y true CN2861644Y (en) | 2007-01-24 |
Family
ID=37659273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520036992 Expired - Fee Related CN2861644Y (en) | 2005-12-29 | 2005-12-29 | Tri-eccentric leakless butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2861644Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564965C (en) * | 2007-06-04 | 2009-12-02 | 占春龙 | Guiding high pressure butterfly valve |
| WO2021077710A1 (en) * | 2019-10-23 | 2021-04-29 | 江苏神通阀门股份有限公司 | Triple eccentric metal sealing butterfly valve structure capable of replacing sealing pair on line |
-
2005
- 2005-12-29 CN CN 200520036992 patent/CN2861644Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100564965C (en) * | 2007-06-04 | 2009-12-02 | 占春龙 | Guiding high pressure butterfly valve |
| WO2021077710A1 (en) * | 2019-10-23 | 2021-04-29 | 江苏神通阀门股份有限公司 | Triple eccentric metal sealing butterfly valve structure capable of replacing sealing pair on line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |