CN2298380Y - Wash resistance emptying valve - Google Patents
Wash resistance emptying valve Download PDFInfo
- Publication number
- CN2298380Y CN2298380Y CN 97207486 CN97207486U CN2298380Y CN 2298380 Y CN2298380 Y CN 2298380Y CN 97207486 CN97207486 CN 97207486 CN 97207486 U CN97207486 U CN 97207486U CN 2298380 Y CN2298380 Y CN 2298380Y
- Authority
- CN
- China
- Prior art keywords
- valve
- ceramic
- spool
- seat
- valve seat
- 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)
- Lift Valve (AREA)
Abstract
The utility model provides a flushing-resistant atmospheric valve, which comprises a valve body, a valve sleeve and a valve seat arranged in the valve body, a valve core matched with the valve sleeve, and a lifting mechanism connected with the valve core. The utility model is characterized in that the valve seat is a ceramic valve seat; a sealing pad is arranged between the valve body and the ceramic valve seat; a soft sealing ring is embedded between the outer wall of the upper end of the ceramic valve seat and the valve body; the valve core is composed of a valve core seat, a valve core head which is connected with the valve core seat by threads, and a valve core ceramic ring. The utility model which has the advantages of high flushing property, high sealing reliability, and long service life can be used as an atmospheric and blow-off valve for the delivery pipelines or delivery devices of oil, gas, and water.
Description
The utility model relates to a kind of valve, particularly relates to a kind of anti-atmospheric valve that washes away.
At present, the atmospheric valve that is adopted in oil, the natural gas line gathering system mostly is the disclosed atmospheric valve of Chinese patent CN2129848Y, it is made up of valve body, valve rod, spool, cage type valve seat etc., throttling position when it is characterized in that valve emptying is the fluting place of cage type valve seat, and cage type valve seat and seal spool have been paid soft seal and hard sealing.There are two shortcomings in this kind atmospheric valve, and the first is inlaid in the soft O-ring seals in the inner cylindrical surface of valve seat bottom, is cut bad the inefficacy by spool end socket cap easily in closing closed procedure, when pressure reduction is excessive, also seal ring can be gone out.It two is that cage type valve seat and spool all adopt metallic material, and the high-velocity fluid during easily by throttling emptying washes away bad.
The purpose of this utility model is to provide a kind of separate throttling position and sealing position, the employing ceramic valve seat, and on ceramic valve seat the anti-atmospheric valve that washes away of the soft seal ring of setting-in.
The anti-atmospheric valve that washes away of the utility model is to realize like this, it comprises valve body, be positioned at the valve pocket and the valve seat of valve body, the spool that cooperates with valve pocket, and the lifting gear that is connected with spool, valve seat is a ceramic valve seat, between valve body and ceramic valve seat, be provided with sealing gasket, be embedded with soft seal ring between ceramic valve seat upper end outer wall and valve pocket, soft seal ring can be an O-ring seals, trapezoidal seal ring and X-shaped seal ring, spool is by valve core case, the hard sealing pair that valve core head that is threaded with valve core case and spool porcelain ring are formed the valve core head end face can be the plane, also can be conical surface.For improving its abrasion resistance energy, terminal inner lining has valve pocket wear-resistant ceramic ring under the valve pocket, and adopts soft gasket seal sealing between spool porcelain ring and valve core case surface of contact.Can adopt the ceramic valve seat of integral form for little valve, big valve then can adopt the combined type ceramic valve seat of setting-in ceramic ring form.Lifting gear is by the valve gap that is installed on the valve body, the support that is connected with valve gap, and the valve rod that is connected with support by Stem Mut, and the handwheel that cooperates with valve rod forms, and filler and Gland are arranged between valve rod and the valve gap.This atmospheric valve has double seal, closely contact the hard sealing pair of back generation between first spool porcelain ring lower end surface and the ceramic valve seat upper-end surface, and it two is soft sealing pairs between spool porcelain ring lower end surface and the soft seal ring.Moreover the throttling position of this atmospheric valve also is divided into two-part, and the gap is joined between spool porcelain ring and the valve pocket wear-resistant ceramic ring by first portion, and second portion is the fluting place of valve pocket.
The anti-working principle of washing away atmospheric valve of the utility model is, during valve opening, spool moves up under lifting gear drives, soft sealing pair surface of contact between hard sealing pair between spool porcelain ring lower end surface and the ceramic valve seat upper-end surface and spool porcelain ring lower end surface and the soft seal ring is thrown off, micro fluid is discharged by valve pocket wear-resistant ceramic ring and spool porcelain czermak space, because this gap is less, fluid produces the high pressure throttling in the runner that this section is made up of the gap, the fluid flow that pass through this moment is little, flow velocity is low, does not wash away so can not produce sealing surface.When moving to the lower end surface above the valve pocket slotting position on the spool, fluid is in the place's throttling of valve pocket fluting, and along with moving on the spool, valve opening is enlarged to complete opening; During valve closing, spool moves down under lifting gear drives, valve opening reduces thereupon, after the spool lower end surface moves past the valve pocket slotting position, micro fluid is extruded from valve pocket wear-resistant ceramic ring and spool porcelain czermak space, fluid pressure energy consumes in valve pocket wear-resistant ceramic ring and spool porcelain czermak space, realizes the high pressure throttling.When the spool lower end surface with after the valve seat upper-end surface contacts, the hard sealing pair works.Valve closing, soft sealing pair are further blocked the micro gap of hard sealing pair surface because of processing or installation formation, make valve reach sealing nothing fully and leak.
The anti-advantage of washing away atmospheric valve of the utility model is anti-washing away, and sealing is reliable, and long service life can be used in oil, gas, water conveyance conduit and the device, does emptying, sewage draining valve use.
Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
Fig. 1: the utility model structural representation
Fig. 2: the utility model standard-sized sheet, throttling and close working state schematic representation
The anti-atmospheric valve that washes away of the utility model comprises valve body 1, be positioned at the valve pocket 5 and the ceramic valve seat 2 of valve body 1, the spool that cooperates with valve pocket 5, and the lifting gear that is connected with spool, be provided with sealing gasket 3 at valve body 1 and 2 of ceramic valve seats, ceramic valve seat 2 upper end outer walls and 5 of valve pockets are embedded with soft seal ring 4, spool is by valve core case 7, valve core head 8 that is threaded with valve core case 7 and spool porcelain ring 9 are formed, 5 times terminal inner linings of valve pocket have valve pocket wear-resistant ceramic ring 6, and between spool porcelain ring 9 and valve core case 7 surface of contact, adopt soft gasket seal 17 to seal, lifting gear is by the valve gap 10 that is installed on the valve body 1, the support 11 that is connected with valve gap 10, the valve rod 12 that is connected with support 11 by Stem Mut 14, and the handwheel 13 that cooperates with valve rod 12 forms, and filler 16 and Gland 15 are arranged between valve rod 12 and the valve gap 10.
Valve element position is A during the anti-full-gear of washing away atmospheric valve (as shown in Figure 2) of the utility model, is B during throttle, is C during closed condition.
Claims (2)
1, a kind of anti-atmospheric valve that washes away, comprise valve body, be arranged on valve pocket and valve seat in the valve body, the spool that cooperates with valve pocket, and the lifting gear that is connected with spool, it is characterized in that valve seat is a ceramic valve seat, is provided with sealing gasket between valve body and ceramic valve seat, be embedded with soft seal ring between ceramic valve seat upper end outer wall and valve pocket, spool is made up of valve core case, the valve core head that is threaded with valve core case and spool porcelain ring.
2, the anti-atmospheric valve that washes away as claimed in claim 1 is characterized in that terminal inner lining has valve pocket wear-resistant ceramic ring under the valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207486 CN2298380Y (en) | 1997-01-20 | 1997-01-20 | Wash resistance emptying valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207486 CN2298380Y (en) | 1997-01-20 | 1997-01-20 | Wash resistance emptying valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2298380Y true CN2298380Y (en) | 1998-11-25 |
Family
ID=33927237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97207486 Expired - Fee Related CN2298380Y (en) | 1997-01-20 | 1997-01-20 | Wash resistance emptying valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2298380Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378381C (en) * | 2003-04-18 | 2008-04-02 | 维兰公司 | Fluid flow control valve device |
| CN102913632A (en) * | 2012-10-16 | 2013-02-06 | 承德高中压阀门管件集团有限公司 | Balance valve with separated valve body and valve seat |
-
1997
- 1997-01-20 CN CN 97207486 patent/CN2298380Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378381C (en) * | 2003-04-18 | 2008-04-02 | 维兰公司 | Fluid flow control valve device |
| CN102913632A (en) * | 2012-10-16 | 2013-02-06 | 承德高中压阀门管件集团有限公司 | Balance valve with separated valve body and valve seat |
| CN102913632B (en) * | 2012-10-16 | 2016-08-24 | 承德高中压阀门管件集团有限公司 | A kind of valve body and valve seat double-body bike balanced 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 |