CN2154935Y - Double sealed ball valve - Google Patents
Double sealed ball valve Download PDFInfo
- Publication number
- CN2154935Y CN2154935Y CN 92216672 CN92216672U CN2154935Y CN 2154935 Y CN2154935 Y CN 2154935Y CN 92216672 CN92216672 CN 92216672 CN 92216672 U CN92216672 U CN 92216672U CN 2154935 Y CN2154935 Y CN 2154935Y
- Authority
- CN
- China
- Prior art keywords
- valve
- seal ring
- seal
- valve body
- 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
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- Sliding Valves (AREA)
- Multiple-Way Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model belongs to a cut-off valve used in transmission pipelines for deslagging and ash discharge. A Y-shaped pressure maintaining seal ring is arranged at t he lateral part of a groove, which is concentric with a rectangular seal ring and is embedded in the groove arranged on an annular sealed seat in the valve body, and the lateral part of the groove is embeddable in the rectangular support seal ring. A shaft seal drainage hole is arranged under one side of the valve body. When the utility model works, the wear of the wear parts is reduced by adding shaft seal water through the shaft seal drainage hole. The utility model has the advantages that double-seal effect is formed by adding a seal ring on the basis of the support seal ring, the valve core performs a protective function to the seal parts when the valve core is opened or closed, and the service life is extended.
Description
The utility model belongs to the shutoff valve that deslagging, ash discharge conveyance conduit are used.
Be used for the shutoff valve of industry deslaggings such as thermal power plant, ash discharge conveyance conduit, normally constitute by valve body, valve rod and spool.Its valve body and spherical valve core are to adopt single support seal ring sealing and play support and pressurize effect, and seal ring is a rectangle, and outer power is pressed on the spool spherome surface, realizes the sealing of valve body and spool surface of contact.In the pure medium of no granule foreign, the seal ring of this valve is feasible, in being in hydraulic fill pipeline during as shutoff valve, the valve of this sealing configuration just exists, because the granule foreign in the mud causes heavy wear to directly washing away between spool and valve body, reduce the working life of valve, influenced sealing effect.
The purpose of this utility model is the shortcoming at above-mentioned existence, provides a kind of and prevents that the granule foreign in the mud from causing wearing and tearing to directly washing away between spool and valve body, improves valve working life, the valve of good sealing effect.
Technological points of the present utility model is:
Can embed rectangle on the interior ring sealing base of valve body (4) (5) and support the groove sidepiece of seal ring (6), be provided with the groove embedding Y shape pressurize seal ring (10) concentric, be provided with a water shutoff hole (2) at a side lower part of valve body (4) with rectangular seal (6).When work, be to add the abrasion that the axle water shutoff alleviates wear-out part by axle water shutoff hole (2).
The utility model has the advantages that: owing on the basis of supporting seal ring, increased the pressurize seal ring again one, not only the sealing force to spool is big, and pressure maintaining performance is good, has formed the double seal effect.Increase the axle water shutoff, made spool when open and close, Sealing has been played the effect of protecting, prolonged working life.It is simple in structure, is easy to processing, long service life, and stable performance, easy to utilize.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the cross-section profile of the pressurize seal ring of Fig. 1.
Said pressurize seal ring (10) also can be selected V-arrangement or O type circle for use in the utility model, adopts teflon to make.The two ends of valve body (4) are to join or fix by flange and pipeline.Among the figure 1 is tailing axle, and 3 is axle water shutoff stopple, and 7 is the O RunddichtringO, and 8 is lining, and 9 is spring, and 12 is needle bearing, and 13 is support.
Its working principle is:
When closing, be to drive spheroid spool (15) by drive unit (14) by valve rod (11) to rotate 90 degree.Close; open simultaneously and connect the little valve of axle water shutoff; a water shutoff is entered between the valve body (4) and spheroid (15) of valve pocket; when spheroid spool (15) rotated, when port hole one forwarded to and supports seal ring (6) and be exposed in the slurry flows, the axle water shutoff was at this moment by the slit between valve pocket and the spheroid spool (15); inject in the slurry flows; formed a clear water fluid layer supporting between seal ring (6) and the slurry flows, circle has been protected, until to the slurry channel Close All is shut.Rotate 90 degree by drive unit (14) assurance, dead buting iron dieback puts in place, and close valve and finish, then, and the little valve of closing axle water shutoff, the valve body (14) of valve pocket and the slit between the spheroid spool (15) all are full of by clear water at this moment.Guaranteed that first wearing and tearing when drive valve next time are very little and opened the reliability of valve.
When driving valve, pass through valve rod (11) by drive unit (14), drive spheroid spool (15) rotation 90 degree and drive valve, open simultaneously and connect the little valve of a water shutoff, a water shutoff is entered between valve pocket and the spheroid (15), when spheroid spool (15) goes to one connection of valve body (4) port hole, slurry flows is flowed to low voltage terminal by pressure chamber at once, because firm connection, passage is very little, mud speed rate is very high, it is very fast to wear and tear, but this moment is because injecting by the valve pocket slit of water shutoff of axle poured slurry flows at a high speed, between slurry flows and valve body (4) and sealing seat (5), form a clear water layer, reduced support seal ring (6), the wearing and tearing of pressurize seal ring (10) are until the port hole complete matching of port hole that forwards spheroid spool (15) to and valve body (4), be the dead buting iron of drive unit (14) dieback that puts in place, open valve events and promptly finish.Gap between this moment valve pocket and the spheroid spool (15) is full of by clear water, the reliability of the very little and unlatching of the running-in wear when having guaranteed to close valve events.
Claims (2)
1, a kind of double-seal ball valve, have valve body, valve rod and spool, it is characterized in that to embed on the interior ring sealing base of valve body (4) (5) the groove sidepiece that rectangle supports seal ring (6), be provided with the concentric groove of rectangular seal (6) and embed Y shape pressurize seal ring (10), be provided with a water shutoff hole (2) at a side lower part of valve body (4).
2,, it is characterized in that said pressurize seal ring (10) also can select V-arrangement or O type circle for use according to the described ball valve of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92216672 CN2154935Y (en) | 1992-08-05 | 1992-08-05 | Double sealed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92216672 CN2154935Y (en) | 1992-08-05 | 1992-08-05 | Double sealed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2154935Y true CN2154935Y (en) | 1994-02-02 |
Family
ID=33764753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92216672 Expired - Fee Related CN2154935Y (en) | 1992-08-05 | 1992-08-05 | Double sealed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2154935Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052479A (en) * | 2010-12-23 | 2011-05-11 | 曾品其 | Composite sealing bidirectional straightway ball valve with four seats |
| CN103742664A (en) * | 2013-11-28 | 2014-04-23 | 成都欧浦特控制阀门有限公司 | Ball valve with sealing performance improving function |
| CN104265944A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Low-torque flexible sealing plug valve |
-
1992
- 1992-08-05 CN CN 92216672 patent/CN2154935Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052479A (en) * | 2010-12-23 | 2011-05-11 | 曾品其 | Composite sealing bidirectional straightway ball valve with four seats |
| CN102052479B (en) * | 2010-12-23 | 2014-04-09 | 曾品其 | Composite sealing bidirectional straightway ball valve with four seats |
| CN103742664A (en) * | 2013-11-28 | 2014-04-23 | 成都欧浦特控制阀门有限公司 | Ball valve with sealing performance improving function |
| CN104265944A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Low-torque flexible sealing 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 |