CN2616774Y - Self-sealed gas check valve - Google Patents
Self-sealed gas check valve Download PDFInfo
- Publication number
- CN2616774Y CN2616774Y CN 03218768 CN03218768U CN2616774Y CN 2616774 Y CN2616774 Y CN 2616774Y CN 03218768 CN03218768 CN 03218768 CN 03218768 U CN03218768 U CN 03218768U CN 2616774 Y CN2616774 Y CN 2616774Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- model
- utility
- valve
- head
- 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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- Check Valves (AREA)
Abstract
The utility model relates to a self-hermetic gas check valve, which comprises a valve body, a shell; the utility model is characterized in that the head of the valve body is a cylinder or a cone, an air inlet channel is positioned in the valve body; one to twenty air inlets are positioned in the cylinder or cone of the head of the valve body, the air inlets are communicated with the air inlet channel in the valve body; an elastic rubber sealing ring the air inlet of the head of the valve body is sleeved with an elastic rubber sealing ring. Compared with prior art, the valve has advantages of simplicity, practicality, reliable sealing and long service life. The utility model has little wear and tear of the assistant blowing pipeline and is the original model in the field of the thermal power plant ash disposal concomitant blowing system. The utility model has overriding advantages in the field of small-bore pipelines. The utility model is applicable not only to the gas system, but also to the liquid and other fluid system.
Description
Technical field
The utility model relates to the fluid check valve, the self-sealed gas check valve in particularly a kind of air-transport system.
Background technique
A kind of external check valve that uses in the air-transport system is made up of valve seat, sealing rubber ring and spring etc. at present.Be in the interior rubber ring of valve seat annular recess under gas pressure, alternately open and close the air-flow path in the valve seat.Spring promotion rubber ring falls in the groove of valve seat when closing, and air flue is sealed.This check valve complex structure, easy appearance in service is leaked, and sealing is poor, and makes the road heavy wear of companion's blowpipe, causes reliability and durability all relatively poor.
Summary of the invention
The purpose of this utility model is the above-mentioned difficulties that will overcome prior art, provides a kind of simple in structure, the gas check valve of sealing and better reliability.
Solution of the present utility model comprises valve body and housing, it is characterized in that the head of said valve body is cylinder or cone, and intake duct is arranged in the valve body; In the cylinder of valve head or cone, have 1-20 exhaust port, communicate with intake duct in the valve body; The flexible rubber seal of valve head inlet hole overcoat.
This check valve compared with prior art has following advantage:
1, simple and practical, sealing is reliable, long service life.
2, little to mixing the wearing and tearing of blowpipe road, belong to initiative in the thermal power plant ash disposal companion system of blowing.
3, in small-bore pipeline, has outstanding advantage.Not only be applicable to gas system, also be applicable to other fluid systems such as liquid.
Description of drawings
Accompanying drawing is the sectional arrangement drawing of the utility model gas check valve.
Embodiment
Referring to accompanying drawing, this valve only is made up of valve body 1, housing 2 and rubber seal 3 etc.Valve body 1 afterbody and housing 2 are sealed and matched.Between housing 2 and the valve body 1 inner chamber 4 is arranged.Valve head 5 is a taper type.Have a plurality of exhaust ports 6 in the frustum, communicate with the intake duct 7 of valve body.Outside valve head exhaust port 6, be with rubber seal 3.Sealing circle and valve head 5 closely cooperate.When the valve internal pressure surpassed the pretightening force of seal ring 3, seal ring swelled, and gas is discharged between seal ring and valve body.When the valve body internal pressure reduces, seal ring 3 is sealed relief opening 6 under self elastic force effect, along with pressure continues to raise, and seal ring and the increase of valve body pressure, the better tightness of valve.Valve opening pressure can be adjusted by the elastic force of adjusting seal ring.The elastic force of seal ring and material, shape, size all have relation.Once determining that cracking pressure just no longer changes.
Claims (1)
1, self-sealed gas check valve comprises valve body (1) and housing (2), it is characterized in that the head of said valve body (1) is cylinder or cone, and intake duct (7) is arranged in the valve body; In the cylinder of valve head or cone, have 1-20 inlet hole (6), communicate with intake duct (7) in the valve body; The flexible rubber seal of valve head inlet hole (6) overcoat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218768 CN2616774Y (en) | 2003-04-18 | 2003-04-18 | Self-sealed gas check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218768 CN2616774Y (en) | 2003-04-18 | 2003-04-18 | Self-sealed gas check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2616774Y true CN2616774Y (en) | 2004-05-19 |
Family
ID=34244008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03218768 Expired - Fee Related CN2616774Y (en) | 2003-04-18 | 2003-04-18 | Self-sealed gas check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2616774Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2312141A1 (en) * | 2009-10-19 | 2011-04-20 | Honda Motor Co., Ltd. | Gas fuel supply apparatus |
| CN102417071A (en) * | 2010-09-28 | 2012-04-18 | 具定奥 | Vacuum pump for vacuum container |
-
2003
- 2003-04-18 CN CN 03218768 patent/CN2616774Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2312141A1 (en) * | 2009-10-19 | 2011-04-20 | Honda Motor Co., Ltd. | Gas fuel supply apparatus |
| US8851053B2 (en) | 2009-10-19 | 2014-10-07 | Honda Motor Co., Ltd. | Gas fuel supply apparatus |
| CN102417071A (en) * | 2010-09-28 | 2012-04-18 | 具定奥 | Vacuum pump for vacuum container |
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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: 20040519 Termination date: 20110418 |