CN202992213U - Double sealing subsidiary stop valve - Google Patents
Double sealing subsidiary stop valve Download PDFInfo
- Publication number
- CN202992213U CN202992213U CN 201220554169 CN201220554169U CN202992213U CN 202992213 U CN202992213 U CN 202992213U CN 201220554169 CN201220554169 CN 201220554169 CN 201220554169 U CN201220554169 U CN 201220554169U CN 202992213 U CN202992213 U CN 202992213U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- sealing
- 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 - Fee Related
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Abstract
The utility model relates to a double sealing subsidiary stop valve which comprises a valve seat, a valve body, a valve rod and a valve flap, wherein the valve rod extends into the valve body, the valve flap is connected with the lower end of the valve rod and closely matched with the valve seat, and the valve flap is in a stepped shape. The double sealing subsidiary stop valve is characterized in that an annular layer auxiliary sealing pair is added to one side, closely attache to the valve flap, when the annular layer auxiliary sealing pair is closed, the outer surface of the bottom of the valve flap is closely attache to the inner wall of the auxiliary sealing pair, and the auxiliary sealing pair is arranged on the upper surface of the sealing surface of the valve seat. The double sealing subsidiary stop valve can reduce washing force of a medium on the sealing surface of the valve seat and abrasion of the sealing surface of the valve seat.
Description
Technical field
The utility model relates to a kind of double seal assistant stop valve.
Background technique
The stop valve that uses at present, the sealing surface of valve seat only has one sealing, and when valve closing, the pressure reduction circle of medium concentrates on sealing surface, so medium is larger to the scouring force of sealing surface of seat, thereby accelerates the wearing and tearing of sealing surface of seat, reduces its working life.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of medium that can reduce to the stop valve of sealing surface of seat scouring force when valve rod is closed.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of double seal assistant stop valve, comprise valve seat, valve body, valve rod and flap, valve rod stretches in valve body and the lower end is connected with flap, and flap and valve seat match closely, and flap is stepped, it is characterized in that: the side near flap is added with an annulate lamella auxiliary seal pair, when closing, the bottom outer surface of flap is close to the inwall of auxiliary seal pair, and the auxiliary seal pair is on the sealing surface of valve seat.
Use said apparatus, when valve rod is closed, first contact the auxiliary seal pair, and the pipeline of auxiliary seal pair is narrower than body cavity pipeline, therefore the flow of medium will diminish, corresponding pressure has also just diminished, thereby medium has also reduced the scouring force of sealing surface of seat, and the wearing and tearing of sealing surface of seat have also been reduced.
Description of drawings
Fig. 1 is the structural drawing of stop valve of the present utility model.
Embodiment
By structural drawing shown in Figure 1 as can be known, valve rod 1 stretches in valve body 4, the lower end of valve rod 1 has one section narrower than top, flap 2 is concavo-convex, the upper end of flap 2 is that the U-shaped shape makes flap 2 can just be enclosed within lower end narrow one section of valve rod 1, flap 2 matches closely with valve seat 5, the lower end of flap 2 is convex, periphery at the sealing surface of valve seat 5 is added with one deck auxiliary seal pair 3, the outer wall of auxiliary seal pair 3 is close on valve body 1, the inwall of auxiliary seal pair 3 just closely matches with the outer wall of flap 2 lower end convexs, and auxiliary seal pair 3 is positioned at above the sealing surface of valve seat 2.
Claims (1)
1. double seal assistant stop valve, comprise valve seat (5), valve body (4), valve rod (1) and flap (2), valve rod (1) stretches in valve body (4) and the lower end is connected with flap (2), flap (2) matches closely with valve seat (5), flap (2) is stepped, it is characterized in that: the side near flap (2) is added with an annulate lamella auxiliary seal secondary (3), when closing, the bottom outer surface of flap (2) is close to the inwall of auxiliary seal pair (3), and auxiliary seal secondary (3) is on the sealing surface of valve seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220554169 CN202992213U (en) | 2012-10-26 | 2012-10-26 | Double sealing subsidiary stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220554169 CN202992213U (en) | 2012-10-26 | 2012-10-26 | Double sealing subsidiary stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992213U true CN202992213U (en) | 2013-06-12 |
Family
ID=48563394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220554169 Expired - Fee Related CN202992213U (en) | 2012-10-26 | 2012-10-26 | Double sealing subsidiary stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900854A (en) * | 2012-10-26 | 2013-01-30 | 南通龙源电站阀门有限公司 | Dual seal secondary cut-off valve |
-
2012
- 2012-10-26 CN CN 201220554169 patent/CN202992213U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900854A (en) * | 2012-10-26 | 2013-01-30 | 南通龙源电站阀门有限公司 | Dual seal secondary cut-off 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 |
Granted publication date: 20130612 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |