CN102384309A - Sealing mechanism of valve rod and valve body - Google Patents
Sealing mechanism of valve rod and valve body Download PDFInfo
- Publication number
- CN102384309A CN102384309A CN2011102791263A CN201110279126A CN102384309A CN 102384309 A CN102384309 A CN 102384309A CN 2011102791263 A CN2011102791263 A CN 2011102791263A CN 201110279126 A CN201110279126 A CN 201110279126A CN 102384309 A CN102384309 A CN 102384309A
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- CN
- China
- Prior art keywords
- valve
- rod
- valve rod
- valve body
- sealing
- 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.)
- Pending
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- Lift Valve (AREA)
Abstract
The invention discloses a sealing mechanism of a valve rod and a valve body, which comprises a valve body, a valve rod, a valve seat and a valve cavity. A valve cover is arranged at the upper end of the valve body, the valve rod is downwards to penetrate through the valve cover and extend to the inside of the valve cavity, the valve rod and the valve body are sealed through a seal ring or packing, a valve clack is fixedly installed at the lower end of the valve rod, an end face of the valve seat is a sealing face, the valve clack and the end of the valve seat are in flexible contact-type sealing, and a sealing pair is formed. The invention is reasonable in structure, the valve rod and the valve body are sealed through the seal ring or the packing, and the valve clack and the valve seat are in flexible contact-type sealing, thereby being good in sealing performance, free of water leakage, and greatly improving quality of the valve and prolonging service life of the valve.
Description
Technical field
The present invention relates to the stop valve field, be specifically related to a kind of valve rod of stop valve and the sealing mechanism of valve body.
Background technique
Stop valve belongs to forced seal formula valve, so when valve closing, must exert pressure to flap, does not leak with forced seal face.When medium gets into valve by the flap below; The required resistance that overcomes of steering force is the frictional force of valve rod and filler with by the thrust that pressure produced of medium, the power that the force rate of closing valve is opened valve is big; So it is big that the diameter of valve rod is wanted, otherwise the fault of valve rod bending can take place.In recent years, after occurring from self-packing valve, the MEDIA FLOW of stop valve gets into valve pocket to just changing by the flap top, and at this moment under the pressure medium effect, the power of closing valve is little, and it is big to open the power of valve, and the diameter of valve rod can correspondingly reduce.Simultaneously, under the medium effect, the valve of this form is also tighter.
Summary of the invention
The sealing mechanism that the purpose of this invention is to provide a kind of valve rod and valve body solves the bad problem of sealability between valve rod and the valve body of existing stop valve.
Technological scheme of the present invention is following:
The sealing mechanism of a kind of valve rod and valve body includes valve body, valve rod, valve seat and valve pocket, and the upper end of valve body is equipped with valve gap; It is characterized in that: described valve rod is passed down through valve gap and extends in the valve pocket; Through seal ring or packing seal, the lower end of valve rod is installed with flap between valve rod and the valve body, and the end face of said valve seat is a sealing surface; The end of described flap and valve seat is flexible contact seal, and forms sealing pair.
The sealing mechanism of described valve rod and valve body is characterized in that: the end of said valve rod is equipped with handwheel.
Beneficial effect of the present invention:
The present invention is rational in infrastructure, adopts seal ring or packing seal between valve rod and the valve body, and adopts flexible contact seal, good seal performance, the problem that can not occur leaking, the quality and the working life of having improved valve greatly between flap and the valve seat.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Referring to Fig. 1, the sealing mechanism of a kind of valve rod and valve body includes valve body 1, valve rod 2, valve seat 3 and valve pocket 4; The upper end of valve body 1 is equipped with valve gap 5, and valve rod 2 is passed down through valve gap 5 and extends in the valve pocket 4, seals through seal ring or filler 6 between valve rod 2 and the valve body 1; The lower end of valve rod 2 is installed with flap 7; The end face of valve seat 3 is a sealing surface, and flap 7 is flexible contact seal with the end of valve seat 3, and forms sealing pair.
Further, the end of valve rod 2 is equipped with handwheel 8.
Claims (2)
1. the sealing mechanism of valve rod and valve body includes valve body, valve rod, valve seat and valve pocket, and the upper end of valve body is equipped with valve gap; It is characterized in that: described valve rod is passed down through valve gap and extends in the valve pocket; Through seal ring or packing seal, the lower end of valve rod is installed with flap between valve rod and the valve body, and the end face of said valve seat is a sealing surface; The end of described flap and valve seat is flexible contact seal, and forms sealing pair.
2. the sealing mechanism of valve rod according to claim 1 and valve body is characterized in that: the end of said valve rod is equipped with handwheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102791263A CN102384309A (en) | 2011-09-20 | 2011-09-20 | Sealing mechanism of valve rod and valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102791263A CN102384309A (en) | 2011-09-20 | 2011-09-20 | Sealing mechanism of valve rod and valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102384309A true CN102384309A (en) | 2012-03-21 |
Family
ID=45823993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102791263A Pending CN102384309A (en) | 2011-09-20 | 2011-09-20 | Sealing mechanism of valve rod and valve body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102384309A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658871A (en) * | 2022-02-18 | 2022-06-24 | 何婧 | Multistage sealing refrigeration valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259543Y (en) * | 1996-06-28 | 1997-08-13 | 北京市建筑五金科研实验厂 | Threaded valve stem stop valve with improved sealing structure |
| CN201386797Y (en) * | 2009-04-14 | 2010-01-20 | 贺锐 | Explosion-proof two-position two-way fluid pneumatic control angle seat valve |
| CN202302274U (en) * | 2011-09-20 | 2012-07-04 | 铜陵祥云消防科技有限责任公司 | Sealing mechanism of valve rod and valve body |
-
2011
- 2011-09-20 CN CN2011102791263A patent/CN102384309A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259543Y (en) * | 1996-06-28 | 1997-08-13 | 北京市建筑五金科研实验厂 | Threaded valve stem stop valve with improved sealing structure |
| CN201386797Y (en) * | 2009-04-14 | 2010-01-20 | 贺锐 | Explosion-proof two-position two-way fluid pneumatic control angle seat valve |
| CN202302274U (en) * | 2011-09-20 | 2012-07-04 | 铜陵祥云消防科技有限责任公司 | Sealing mechanism of valve rod and valve body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658871A (en) * | 2022-02-18 | 2022-06-24 | 何婧 | Multistage sealing refrigeration valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120321 |