CN2066093U - Non-leakage valve - Google Patents
Non-leakage valve Download PDFInfo
- Publication number
- CN2066093U CN2066093U CN 90212463 CN90212463U CN2066093U CN 2066093 U CN2066093 U CN 2066093U CN 90212463 CN90212463 CN 90212463 CN 90212463 U CN90212463 U CN 90212463U CN 2066093 U CN2066093 U CN 2066093U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- valve rod
- rod
- valve body
- 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.)
- Withdrawn
Links
- 239000012528 membrane Substances 0.000 claims description 8
- 239000003566 sealing material Substances 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 8
- 239000010425 asbestos Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model discloses a non-leakage valve. A joint between a valve body and a valve cover is sealed by a rubber diaphragm; a valve core corresponds to a valve rod, and the rubber diaphragm is arranged between the valve core and the valve rod; the valve core and a valve seat are sealed by a flexible seal material which is inlaid in the concave part of the lower part of the valve core; internal and external leakages can be avoided effectively under a higher pressure; the service life of a seal component can be improved even fluid contains impurity.
Description
The utility model is relevant with engineering element, and is especially relevant with the barrier film stop valve.
General traditional stop valve mostly adopts needle type valve, stopcock etc., and these valves can produce leakage phenomenon after using certain hour.As needle type valve valve seat and spool place, adopt the hard sealing of taper, be easy to occur taper valve core during use and on valve seat, grind groove, the damage sealing surfaces causes leakage (interior leakage), and the oil-containing of valve rod place employing simultaneously asbestos rope compresses and seals.Time is long slightly, and oil is dry, and asbestos rope shrinks, and leakage (leaking outside) will occur.Dielectric leakage both wasted energy, again befouling environment.
Existing Leakless valve is opened valve rod and media isolated with rubber membrane, and rubber membrane is contemporary to seal for spool.Though can avoid leaking, but because the deformability of rubber is big, under the high slightly situation of pressure, interior leakage is just inevitable.Therefore only be applicable to the occasion that pressure is very low.Because the direct seal valve seat of rubber membrane when containing mechanical admixture in the flowing medium, easily washes away the infringement rubber membrane.Therefore fluid medium requires very clean.
The purpose of this utility model provides a kind ofly can be avoided leaking effectively, again can be higher at pressure, and fluid contains under the situation of mechanical admixture and prevents internal leakage effectively, and sealing is reliable, durable valve.
The utility model is achieved in that
The rubber membrane periphery is fixed on valve body and valve cover chamber, and valve rod and spool are separated.The valve rod lower end is corresponding across rubber membrane with the spool upper end.Spool is by valve body inner convex platform and return spring supporting.The sealed end of spool and valve seat is fixed with flexible sealing material.
Valve gap has gland nut and valve body screw-thread fit.The locking stop nut is arranged on the valve rod, and flexible sealing material is embedded in spool lower end recess, and fastening screw trip bolt is arranged.
Rubber membrane of the present utility model itself is not used for direct seal valve seat, just avoids external leakage.Hard-the soft sealing structure of recessive type is adopted in the sealing of spool and valve seat, makes sealing reliable.Flexible sealing material be positioned at fluid scouring less than " extremely " angular region, thereby improved working life of sealing greatly.Flexible sealing material is embedded in the recess of spool bottom, and is fastening with sunk screw.The voltage endurance capability of sealing material improves, and can use under higher pressure.
Following is accompanying drawing of the present utility model:
Fig. 1 is a structural drawing of the present utility model.
Following is embodiment of the present utility model:
On the valve seat in the valve body 1 of the present utility model spool 9 is arranged, spool 9 is by spring 10, and packing ring 11 is bearing on the valve seat boss.Circular depressions is arranged at the bottom of spool 9, and soft seal mouth 12 is embedded in wherein, and is fastening with sunk screw.The top of spool 9 is corresponding with valve rod 4 across diaphragm of rubber 8.Diaphragm of rubber 8 compresses sealing by gland nut 2 between valve seat top and valve gap 3.Locking stop nut 5 is arranged on the pressure cap, prevent that excessive screwing handle artificially from causing the damage of valve.Sunk screw 7 is fixed on handle 6 on the valve rod.
Claims (2)
1, Leakless valve, by valve body, spring, rubber membrane, valve gap, valve rod are formed, and it is characterized in that the valve rod lower end is corresponding with the spool upper end, therebetween across rubber pattern, spool is by boss and return spring supporting, and the sealed end of spool and valve seat is fixed with flexible sealing material, and the rubber pattern periphery is fixed on valve body and valve cover chamber.
2, Leakless valve according to claim 1 is characterized in that valve gap has gland nut and valve body screw-thread fit, and the locking stop nut is arranged on the valve rod, and said soft seal mouth is embedded in spool lower end recess, and fastening screw trip bolt is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212463 CN2066093U (en) | 1990-03-27 | 1990-03-27 | Non-leakage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212463 CN2066093U (en) | 1990-03-27 | 1990-03-27 | Non-leakage valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2066093U true CN2066093U (en) | 1990-11-21 |
Family
ID=4892014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90212463 Withdrawn CN2066093U (en) | 1990-03-27 | 1990-03-27 | Non-leakage valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2066093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102985730A (en) * | 2010-05-24 | 2013-03-20 | 艾默生过程管理调节技术公司 | Valve stem and valve plug apparatus for use with fluid regulators |
-
1990
- 1990-03-27 CN CN 90212463 patent/CN2066093U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102985730A (en) * | 2010-05-24 | 2013-03-20 | 艾默生过程管理调节技术公司 | Valve stem and valve plug apparatus for use with fluid regulators |
| CN102985730B (en) * | 2010-05-24 | 2016-01-06 | 艾默生过程管理调节技术公司 | For valve rod and the valve plug apparatus of fluid conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |