CN2687446Y - Dual-sealed stop cock - Google Patents
Dual-sealed stop cock Download PDFInfo
- Publication number
- CN2687446Y CN2687446Y CN 200420025920 CN200420025920U CN2687446Y CN 2687446 Y CN2687446 Y CN 2687446Y CN 200420025920 CN200420025920 CN 200420025920 CN 200420025920 U CN200420025920 U CN 200420025920U CN 2687446 Y CN2687446 Y CN 2687446Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- spool
- valve body
- clack
- 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
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- Valve Housings (AREA)
Abstract
The utility model relates to a double-sealing plug valve, which is provided with a valve body. A sealing plug valve is arranged in the valve body. A transmission mechanism is installed on a valve rod of the sealing plug valve, and the sealing plug valve is cylindrical. The sealing plug valve is provided with a valve core with a flow channel through hole. The both sides of the valve core through hole is provided with a wedge binding surface which is connected with a sealing valve clack by a structure of a dovetail groove. The sealing valve clack is provided with an annular sealing ring. A circle of sealing ring is embedded or pressed on the periphery of the flow channel opening of the valve core. When the valve is in the state of conducting, the valve body and the valve core realize sealing through the sealing ring on the valve core. Online maintenance can be realized. When the valve is in the state of conducting, the periphery of the flow channel opening of the valve core achieves the sealing effect whose precision is above B stage. So the chassis can be disassembled without stopping the circulation of media in pipelines, when the main sealing valve clack of the valve is damaged and needs changing or the inner wall of the valve body scales and needs cleaning. The phenomenon of leakage of the media almost can not occur in the integral course of the renew of the valve clack or the cleanness of the inner chamber.
Description
Technical field
The utility model relates to a kind of valve of using in the liquid medium conveying, particularly a kind of double-sealing stopcock.
Background technique
Double-sealing stopcock of the prior art is provided with valve body, the sealing cock is housed in the valve body, on the valve rod of sealing cock driving mechanism is housed, its sealing cock is cylindrical shape, the sealing cock is provided with the spool of a band through hole, the both sides of valve core through hole are provided with the wedge shape junction plane, are connected with the sealing flap with oat tail groove structure on the wedge shape junction plane, and the sealing flap is provided with O-ring seal.Its deficiency is: when the valve seal flap damage to need is changed or valve interior wall fouling need clear up the time, then must stop the circulation of medium in the pipeline, to can keep in repair behind the mediator depletion in the pipeline, and have the remaining medium outflow of part inevitably.
Summary of the invention
The technical problems to be solved in the utility model is at the deficiencies in the prior art, proposed to realize a kind of double-sealing stopcock of on-line maintenance, under valve is on state, with regard to removable low bottom-disc, upgrade flap or cleaning inner chamber, whole process produces the medium seepage hardly.
The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of double-sealing stopcock, be provided with valve body, the sealing cock is housed in the valve body, on the valve rod of sealing cock driving mechanism is housed, its sealing cock is cylindrical shape, the sealing cock is provided with the spool of a band runner through hole, the both sides of valve core through hole are provided with the wedge shape junction plane, be connected with the sealing flap with oat tail groove structure on the wedge shape junction plane, the sealing flap is provided with O-ring seal, is characterized in: inlay around spool runner mouth or be suppressed with one and enclose seal ring.When valve is on state, realize sealing by the seal ring on the spool between valve body and the spool.
The technical problems to be solved in the utility model can also come further to realize by the following technical programs, the material of the seal ring at spool runner mouth place is self lubricity polytetrafluoroethylene (PTFE) or a perfluoroethylene-propylene (F46) preferably, both guaranteed sealing, the resistance of reducing friction again.
Compared with prior art, the utility model is inlayed around spool runner mouth or is suppressed with one and encloses seal ring.Can realize on-line maintenance, when valve is on state, reach the above sealing effect of B class precision around making spool runner mouth, like this when valve primary seal flap damage to need is changed or valve interior wall fouling need clear up the time, do not need to stop the circulation of medium in the pipeline, with regard to removable low bottom-disc, upgrade flap or cleaning inner chamber, whole process produces the medium seepage hardly.The utility model is applicable between petroleum metering, the conveying of refinery or the conveying of reservoir area light oil and other nontoxic medium.
Description of drawings
Fig. 1 is a structural front view of the present utility model.
Fig. 2 is the structural drawing of spool.
Embodiment
A kind of double-sealing stopcock, be provided with valve body 1, the sealing cock is housed in the valve body 1, on the valve rod 4 of sealing cock driving mechanism 3 is housed, its sealing cock is cylindrical shape, and the sealing cock is provided with the spool 6 of a band runner through hole 2, the both sides of spool 6 through holes are provided with the wedge shape junction plane, be connected with sealing flap 7 with oat tail groove structure on the wedge shape junction plane, sealing flap 7 is provided with O-ring seal 8, inlays around spool 6 runner mouths or is suppressed with one and enclose seal ring 5.The material of seal ring 5 is self lubricity polytetrafluoroethylene (PTFE) or a perfluoroethylene-propylene (F46) preferably.When valve is on state, realize sealing by the seal ring on the spool 65 between valve body 1 and the spool 6.
Claims (2)
1. double-sealing stopcock, be provided with valve body (1), valve body is equipped with the sealing cock in (1), on the valve rod (4) of sealing cock driving mechanism (3) is housed, its sealing cock is cylindrical shape, the sealing cock is provided with the spool (6) of a band runner through hole (2), the both sides of spool (6) through hole are provided with the wedge shape junction plane, be connected with sealing flap (7) with oat tail groove structure on the wedge shape junction plane, sealing flap (7) is provided with O-ring seal (8), it is characterized in that: inlay around spool (6) runner mouth or be suppressed with one and enclose seal ring (5).
2. double-sealing stopcock according to claim 1 is characterized in that: the material of the seal ring (5) at spool (6) runner mouth place is teflon or perfluoroethylene-propylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025920 CN2687446Y (en) | 2004-03-30 | 2004-03-30 | Dual-sealed stop cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025920 CN2687446Y (en) | 2004-03-30 | 2004-03-30 | Dual-sealed stop cock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687446Y true CN2687446Y (en) | 2005-03-23 |
Family
ID=34670031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420025920 Expired - Fee Related CN2687446Y (en) | 2004-03-30 | 2004-03-30 | Dual-sealed stop cock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687446Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154313A (en) * | 2014-08-19 | 2014-11-19 | 郑子叶 | Gate type device with online maintenance function |
| CN111765264A (en) * | 2020-07-04 | 2020-10-13 | 邵立坤 | Plug valve |
| CN114427606A (en) * | 2022-03-04 | 2022-05-03 | 浙江东信阀门有限公司 | Plug valve |
-
2004
- 2004-03-30 CN CN 200420025920 patent/CN2687446Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154313A (en) * | 2014-08-19 | 2014-11-19 | 郑子叶 | Gate type device with online maintenance function |
| CN111765264A (en) * | 2020-07-04 | 2020-10-13 | 邵立坤 | Plug valve |
| CN114427606A (en) * | 2022-03-04 | 2022-05-03 | 浙江东信阀门有限公司 | Plug valve |
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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 |