CN201763976U - Cut-off valve - Google Patents
Cut-off valve Download PDFInfo
- Publication number
- CN201763976U CN201763976U CN2010205166246U CN201020516624U CN201763976U CN 201763976 U CN201763976 U CN 201763976U CN 2010205166246 U CN2010205166246 U CN 2010205166246U CN 201020516624 U CN201020516624 U CN 201020516624U CN 201763976 U CN201763976 U CN 201763976U
- Authority
- CN
- China
- Prior art keywords
- valve
- annular region
- flap
- seal
- utility
- 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
Links
Abstract
The utility model discloses a cut-off valve, which comprises a hand wheel, a valve rod, a valve body and a valve flap, an annular region aligning to a seal surface of a valve base on the valve flap is arranged in the cambered surface shape, the annular region and the seal surface of the valve base are in the line contact. According to the structure of the utility model, compared to the traditional surface contact seal, the seal pressure can be decreased, under different pressure actions of mediums with different flow quantities flowing through the cavity of the valve body, the contact positions of the annular region and the seal surface of the valve base are different for every time when the valve is closed, accordingly, the fatigue damages of the seal surface caused by being repeatedly sealed every time can not be generated; the valve flap with the cambered surface annular region can be automatically aligned when the valve is closed, and the utility model solves the problem of valve internal leakage caused by the corrosion and abrasion of the seal surface.
Description
Technical field
The utility model relates to a kind of stop valve.
Background technique
Be generally face contact seal between the flap of traditional stop valve and the sealing surface of seat, sealing load is bigger, in the frequent process that opens and closes of stop valve, can take place between flap and the sealing surface of seat to wear and tear or be corroded, and then cause poorly sealed close.
Summary of the invention
Technical problem to be solved in the utility model provides the lasting more and better stop valve of protection of sealing of a kind of valve seat and sealing surface of seat.
For this reason, the stop valve that the utility model provides comprises handwheel, valve rod, valve body and flap, and the annular region of aiming at sealing surface of seat on the flap is the cambered surface setting, and annular region contacts with the valve base sealing upper thread.
Be the cambered surface setting owing to aim at the annular region of sealing surface of seat on the flap of the stop valve that the utility model provides, and this annular region is line with sealing surface of seat and contacts, therefore comparing traditional face contact seal can reduce sealing load, and under the pressure action of medium of the different flow that continued to flow in the body cavity, annular region is all different with the contact position of sealing surface of seat during each throttle down, thereby can not produce fatigue damage because the sealing surface that seals repeat repeatedly at every turn; The flap of band cambered surface annular region can also automatic centering when valve closing, has solved the valves leakage problem that sealing surface corrosion and scratch cause.
Description of drawings
The structure cross-sectional schematic of the stop valve that provides for the utility model among the figure.
Embodiment
As shown in the figure, the stop valve that the utility model provides comprises handwheel 1, valve rod 2, valve body 3 and flap 4, and the annular region 6 of aiming at sealing surface of seat 5 on the flap 4 is the cambered surface setting, and annular region 6 contacts with sealing surface of seat 5 lines.In order further to improve the effect of flap 4 automatic centerings and line contact sealing, the annular region 6 of flap 4 is spherical shape.
Claims (2)
1. a stop valve comprises handwheel (1), valve rod (2), valve body (3) and flap (4), it is characterized in that: described flap (4) is gone up the annular region (6) of aiming at sealing surface of seat (5) and is the cambered surface setting, and annular region (6) contacts with sealing surface of seat (5) line.
2. stop valve according to claim 1 is characterized in that: the annular region (6) of described flap (4) is spherical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205166246U CN201763976U (en) | 2010-08-28 | 2010-08-28 | Cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205166246U CN201763976U (en) | 2010-08-28 | 2010-08-28 | Cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201763976U true CN201763976U (en) | 2011-03-16 |
Family
ID=43716582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205166246U Expired - Fee Related CN201763976U (en) | 2010-08-28 | 2010-08-28 | Cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201763976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819314A (en) * | 2015-05-23 | 2015-08-05 | 江苏江华阀业有限公司 | Special-purpose valve for eakless taper arc surface sealed wet chlorine |
-
2010
- 2010-08-28 CN CN2010205166246U patent/CN201763976U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819314A (en) * | 2015-05-23 | 2015-08-05 | 江苏江华阀业有限公司 | Special-purpose valve for eakless taper arc surface sealed wet chlorine |
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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: 20110316 Termination date: 20130828 |