CN202418611U - Air-release valve - Google Patents
Air-release valve Download PDFInfo
- Publication number
- CN202418611U CN202418611U CN2011205715873U CN201120571587U CN202418611U CN 202418611 U CN202418611 U CN 202418611U CN 2011205715873 U CN2011205715873 U CN 2011205715873U CN 201120571587 U CN201120571587 U CN 201120571587U CN 202418611 U CN202418611 U CN 202418611U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- air
- taper hole
- soft metal
- 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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- Safety Valves (AREA)
Abstract
The utility model discloses an air-release valve. The air-release valve comprises a valve seat, a valve stem, a valve core, an air-release hole and a connecting nut, wherein the valve stem is arranged on the valve seat; the valve core is arranged on the valve seat and is connected with the valve stem; the air-release hole is connected to the valve seat and is provided with the connecting nut. As improvement, the air-release valve is characterized in that: a taper hole is formed in the valve seat; the surface layer of the taper hole is covered with soft metal; a taper surface is arranged on a matching point of the valve core and the valve seat and is matched with the soft metal on the surface layer of the taper hole of the valve seat in a sealing manner; and the rear side of the taper surface of the valve core is provided with a step baffle convex edge According to the air-release valve, the soft metal is composited on the surface layer of the taper hole and is matched with the taper surface of the valve core, and the taper surface of the valve core is matched with the soft metal on the surface layer of the valve hole to compress the soft metal after the air-release valve is used and rubbed, so that the gas tightness is not influenced after the air-release valve is used for a long time, and the aim of double-layer gas leakage-proofing protection is further fulfilled by means of the sealing ring.
Description
Technical field
The utility model relates to a kind of bleed valve, and especially a kind of tightness is bleed valve preferably.
Background technique
The bleed valve that uses at present mainly relies on seal ring to guarantee tightness.Under the environment of HTHP, seal ring easy ageing after use a period of time causes bleed valve gas leakage; And mainly rely on the bleed valve of metal hard-sealing, and using along with the friction between spool and the valve seat, the gap increases between spool and the valve seat, also can cause gas leakage.
Summary of the invention
The utility model provides the bleed valve of the good long service life of a kind of tightness for solving the problem that existing technology in use exists.
The technological scheme that the utility model solves existing issue is: a kind of bleed valve, comprise valve seat, and be arranged at the valve rod on the valve seat; Be arranged at the spool that is connected with valve rod on the valve seat; Be connected in the vent hole on the valve seat, vent hole is provided with the attaching nut, as improvement; Be provided with a taper hole in the described valve seat; Described taper hole top layer is coated with soft metal, and spool and valve seat cooperation place are provided with the conical surface and valve seat taper hole top layer soft metal is sealed and matched, and described spool conical surface rear side is provided with a ladder backstop convex edge.The set conical surface length of above-mentioned spool is greater than taper hole length.Be beneficial to improve valve body working life.
As further improvement, described ladder backstop is provided with elastic washer with the taper hole homonymy on the convex edge, and the taper hole on described elastic washer and the valve seat is sealed and matched.
The utility model compared with prior art; Its beneficial effect is through compound soft metal matches with the spool conical surface on the taper hole top layer; After using friction; The spool conical surface and valve opening top layer soft metal are complementary and compress soft metal, and long-term use does not influence tightness, further reach double-deck anti-gas-leak protection through seal ring.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Referring to Fig. 1, this case study on implementation comprises valve seat 1, is arranged at the valve rod 2 on the valve seat 1; Be arranged at the spool 3 that is connected with valve rod 2 on the valve seat 1, be connected in the vent hole 4 on the valve seat 1, vent hole 4 is provided with attaching nut 41; Be provided with a taper hole 11 in the valve seat 1; Taper hole 11 top layers are coated with soft metal, and spool 3 is provided with the conical surface 31 with valve seat 1 cooperation place and is sealed and matched with valve seat taper hole top layer soft metal, and spool 3 conical surfaces 31 rear sides are provided with a ladder backstop convex edge 32; Backstop convex edge 32 can prevent that spool from too cooperating premature damage taper hole 11 with taper hole 11.Be provided with elastic washer 33 with taper hole 11 homonymies on the ladder backstop convex edge 32; Taper hole 11 on elastic washer 33 and the valve seat 1 is sealed and matched; Sealing time available buffer offset valve rod 2 apply with spool 3 on power, can prevent further that spool from too cooperating premature damage taper hole 11 with taper hole 11.
Claims (2)
1. a bleed valve comprises valve seat, is arranged at the valve rod on the valve seat; Be arranged at the spool that is connected with valve rod on the valve seat, be connected in the vent hole on the valve seat, vent hole is provided with the attaching nut; It is characterized in that: be provided with a taper hole in the described valve seat; Described taper hole top layer is coated with soft metal, and spool and valve seat cooperation place are provided with the conical surface and valve seat taper hole top layer soft metal is sealed and matched, and described spool conical surface rear side is provided with a ladder backstop convex edge.
2. bleed valve as claimed in claim 1 is characterized in that: described ladder backstop is provided with elastic washer with the taper hole homonymy on the convex edge, and the taper hole on described elastic washer and the valve seat is sealed and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205715873U CN202418611U (en) | 2011-12-31 | 2011-12-31 | Air-release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205715873U CN202418611U (en) | 2011-12-31 | 2011-12-31 | Air-release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418611U true CN202418611U (en) | 2012-09-05 |
Family
ID=46743381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205715873U Expired - Fee Related CN202418611U (en) | 2011-12-31 | 2011-12-31 | Air-release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145716A (en) * | 2020-09-04 | 2020-12-29 | 黄爱义 | Valve sealing structure |
-
2011
- 2011-12-31 CN CN2011205715873U patent/CN202418611U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145716A (en) * | 2020-09-04 | 2020-12-29 | 黄爱义 | Valve sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |