CN202371240U - Soft seal safety valve - Google Patents
Soft seal safety valve Download PDFInfo
- Publication number
- CN202371240U CN202371240U CN2011205728981U CN201120572898U CN202371240U CN 202371240 U CN202371240 U CN 202371240U CN 2011205728981 U CN2011205728981 U CN 2011205728981U CN 201120572898 U CN201120572898 U CN 201120572898U CN 202371240 U CN202371240 U CN 202371240U
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- CN
- China
- Prior art keywords
- valve
- flap
- sealing surface
- valve seat
- 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 - Lifetime
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Abstract
The utility model relates to a soft seal safety valve. The valve comprises a valve body, a valve seat, a valve flap, a recoil disc, a guide sleeve, a valve cover, a spring, a valve rod and a valve cap, wherein the valve seat is made of a metal material and fixed in an inner cavity of the valve body; the valve flap is made of a rubber material and fixed on the recoil disc through a screw; the sealing surface of the valve seat has a plane structure; and a small arc boss is formed on the flat-plate sealing surface of the valve flap. When the valve is open, acting force applied to the small arc boss of the valve flap due to medium discharge is small; when the valve is closed, the small arc boss of the valve flap is in linear seal with the sealing surface of the valve seat, so that medium impurities are difficultly detained between the sealing surfaces of the valve flap and the valve seat; and the valve has the advantages of high sealing performance, long service life and the like, and is suitable for an overpressure protection device of a high-pressure pipeline container.
Description
Technical field
The utility model relates to a kind of valve, especially a kind of soft sealing structure safety valve.The utility model is applicable to the overpressure protector of high pressure pipe line container.
Background technique
The safety valve of present soft sealing structure, its sealing surface of seat is that metallic material is processed, and the flap sealing surface is that rubber or fluoroplastic material are processed, and its structural type mainly contains two kinds.A kind of is plane and plane sealing structure: sealing surface of seat is a plane form, and flap has the plane sealing face of a boss shape; Another kind is circular arc and plane sealing structure: sealing surface of seat is an arc form, and flap is the plane sealing face.Its major defect is: because the flap sealing surface is to adopt rubber or fluoroplastic material to process; Safety valve for plane and plane sealing structure; Male seal face at high pressure operating mode lower Disc is prone to be destroyed; Working life is short, and medium impurity is prone to be trapped between the two plane sealing faces, makes to occur when being sealed and matched leaking; For circular arc and plane sealing structure, on the plate shaped sealing surface of flap, form groove easily, produce and leak poor sealing performance.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, and the soft seal safety valve of a kind of sealability, long service life is provided.
The technological scheme of the utility model comprises valve body, valve seat, flap, Disc holder, guide sleeve, valve gap, spring, valve rod, bonnet; Valve seat adopts metallic material; Be fixed on body cavity, flap adopts rubber material, through screw on Disc holder; Sealing surface of seat is a plane structure, mainly is that the flap sealing surface is for being provided with the small boss of circular arc on plate shaped sealing surface.
The utility model has the advantages that the flap sealing surface adopts circular arc small boss and valve seat planes sealing surface fitted seal; Valve is when opening state; Media discharge is little to the active force that flap circular arc small boss produces, and valve is in off position the time, flap circular arc small boss and sealing surface of seat formation linear sealing state; Medium impurity is not easy to be trapped between flap and the sealing surface of seat, has characteristics such as good seal performance, long service life.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the partial structurtes enlarged view at I place among the utility model Fig. 1.
Embodiment
Soft seal safety valve as shown in Figure 1 comprises valve body 1, valve seat 2, flap 3, Disc holder 5, guide sleeve 6, valve gap 7, spring 9, valve rod 8, bonnet 10, and valve seat 2 adopts metallic material; Be fixed on valve body 1 inner chamber; Flap 3 adopts rubber material, also can adopt plastics, is fixed on the Disc holder 5 through screw 4; Valve seat 2 sealing surfaces are plane structure, and flap 3 sealing surfaces are for being provided with circular arc small boss 11 on plate shaped sealing surface.Valve is when opening state, and media discharge is little to the active force that flap 3 circular arc small boss 11 produce, and reduces medium washing away flap 3 sealing surfaces.Valve is in off position the time; Flap 3 circular arc small boss and valve seat 2 sealing surfaces form the linear sealing state; Medium impurity is not easy to be trapped between flap 3 and valve seat 2 sealing surfaces; Flap 3 circular arc small boss 11 are compressed into one a little more than flap 3 plane sealing faces and the high seal ring 12 of surface roughness precision under spring 9 compression force, as shown in Figure 2.
Claims (1)
1. soft seal safety valve; Comprise valve body (1), valve seat (2), flap (3), Disc holder (5), guide sleeve (6), valve gap (7), spring (9), valve rod (8), bonnet (10), valve seat (2) adopts metallic material, is fixed on valve body (1) inner chamber; Flap (3) adopts rubber material; Be fixed on the Disc holder (5) through screw (4), valve seat (2) sealing surface is a plane structure, it is characterized in that flap (3) sealing surface is for being provided with circular arc small boss (11) on plate shaped sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205728981U CN202371240U (en) | 2011-12-19 | 2011-12-19 | Soft seal safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205728981U CN202371240U (en) | 2011-12-19 | 2011-12-19 | Soft seal safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371240U true CN202371240U (en) | 2012-08-08 |
Family
ID=46594944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205728981U Expired - Lifetime CN202371240U (en) | 2011-12-19 | 2011-12-19 | Soft seal safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371240U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276249A (en) * | 2014-07-24 | 2016-01-27 | 周平 | Spring-type natural gas safety valve |
| CN109163126A (en) * | 2018-11-01 | 2019-01-08 | 恒华阀门有限公司 | High-performance high temperature and pressure safety valve |
| CN109163126B (en) * | 2018-11-01 | 2024-06-28 | 恒华阀门有限公司 | High-performance high-temperature high-pressure safety valve |
-
2011
- 2011-12-19 CN CN2011205728981U patent/CN202371240U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276249A (en) * | 2014-07-24 | 2016-01-27 | 周平 | Spring-type natural gas safety valve |
| CN109163126A (en) * | 2018-11-01 | 2019-01-08 | 恒华阀门有限公司 | High-performance high temperature and pressure safety valve |
| CN109163126B (en) * | 2018-11-01 | 2024-06-28 | 恒华阀门有限公司 | High-performance high-temperature high-pressure safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |