CN2101800U - Composite force type stop valve - Google Patents
Composite force type stop valve Download PDFInfo
- Publication number
- CN2101800U CN2101800U CN 91219400 CN91219400U CN2101800U CN 2101800 U CN2101800 U CN 2101800U CN 91219400 CN91219400 CN 91219400 CN 91219400 U CN91219400 U CN 91219400U CN 2101800 U CN2101800 U CN 2101800U
- Authority
- CN
- China
- Prior art keywords
- valve
- screw rod
- pipeline
- stop valve
- screw mandrel
- 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- Withdrawn
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- Details Of Valves (AREA)
Abstract
The utility model discloses a composite force type stop valve, and the utility model is the opening or closing valve of the pipeline, comprising a valve body, a screw rod in the valve body, a screw rod sleeve, a big pressing cap, a small pressing cap, a corrugated pipe, a top rod, a valve core, a valve sheet, springs, etc. Through operating the screw rod which can not be lifted can only be rotated. The screw rod sleeve is obtained to move up and down. The corrugated pipe is driven to press towards the top rod. The valve sheet is prompted to depart from the valve core, whereas the pipeline is opened. On the contrary, under the composite force functions of the spring force and the pipeline inner pressure the pipeline is automatically closed. The valve has good sealing performance. Whether the valve is positioned in the open state or the close state, the valve has no leakage evenly. The valve has cushy opening, and vulnerable parts are converted conveniently.
Description
The utility model relates to the opening/shutting valve of fluid line.
Stop valve is the requisite annex of fluid line, no matter be gaseous state or liquid state, it is all undertaking the task of opening and closing.The applied stop valve of China all is made up of valve body, screw mandrel, spool, pressure cap at present, rely on screw mandrel to drive the spool opening/shutting valve, be anti-leak, adopt the asbestos graphite packing to seal, the shortcoming of this structure is with how long just not producing the slit in screw mandrel and the filler, thereby the gas when causing being cut off and opening (liquid) therefrom overflows, and has not only wasted raw material, causes environmental pollution simultaneously; In addition,, increased frictional force, required great effort very much when therefore opening owing to make sealing material with asbestos packing in a large number.
The purpose of this utility model is to overcome the defective on the existing stop valve structure, provides a kind of nothing to leak, open the novel easily formula stop valve of making a concerted effort.
Accompanying drawing provides structural representation of the present utility model.
The accompanying drawing that following basis provides is described in detail the utility model.
The embodiment of the novel formula stop valve of making a concerted effort is as shown in drawings: be provided with opening/closing mechanism in valve body (1) valve opening that vertical gas (liquid) flows to, comprise the screw mandrel (4) of handling Open valve, it is because of being subjected to big or small pressure cap (5), (3) influence can only be rotated can not lifting, screw mandrel (4) and screw mandrel cover (6) screw thread combination, being contained in two ends is welded with in the metal corrugated stainless steel tubing (2) of pad, the wall thickness of the bellows (2) of replacement stuffing box packing effect is 0.12～0.18mm only, high resilience, the Upper gasket of bellows (2) presses the sealing surface of valve body (1), pressing by big pressure cap (5), even the pipeline opening state can not leak from top yet.Push rod (7) passes the spool (13) that screws on valve body (1) and is threaded with polyvinylfluoride pad (12), valve block (11), the sealing surface of spool (13) needs precision machining, its endoporus can be hexagon or octagon, both has been convenient to screw in the valve body screw, and favourable again gas (liquid) is unimpeded.Polyvinylfluoride pad (12) insertion is compressed by compressing tablet (8), or is screwed in valve block (11), and spring (9) is contained in valve block (11) and silently between (10).
When needing Open valve, rotary screw (4) descends screw mandrel cover (6), drives bellows (2) and presses to push rod (7), opens the sealing surface Open valve of pad (12) and spool (13).The interior omoplate sealing surface of valve body (1) is close to because of the Upper gasket of bellows (2) in top, has stoped gas (liquid) excessive, can not cause leakage.Unscrew screw mandrel (4) during throttle down, screw mandrel cover (6) is risen, bellows (2) resets, originally compressed spring (9) makes valve block (11) upwards press to spool (13) sealing surface and close automatically, simultaneously because ducted existing pressure also impels the pad (12) on the valve block (11) tightly to press to spool (13), form and make a concerted effort, make sealing reach the optimum state.During as needs transposings easily damaged parts bellowss (2), needn't pull down whole valve, as long as treat can tear trade-in open behind the valve closing, tightening nuts can continue to use then, unlikelyly causes that whole valve scraps.
By the design's stop valve, replace stuffing box packing with bellows, spool, valve block are because of spring force and the manifold pressure double-sealing of making a concerted effort, no matter opening state still is that closed condition can both obtain good sealing, the energy has been saved in essentially no leakage.It is closed automatically rapidly, opens easily, solved former stop valve and opened difficulty, and the transposing easily damaged parts is convenient.
Claims (2)
1, a kind of novel formula stop valve of making a concerted effort that opens and closes fluid line, screw mandrel (4), spool (13) and the large and small pressure cap (5), (3) that open and close passage are housed in the valve body (1), it is characterized in that described screw mandrel (4) combines with screw mandrel cover (6) screw thread, they are contained in two ends and are welded with in the metal bellows (2) of pad, push rod (7) under the bellows (2) passes the spool (13) and polyvinylfluoride pad (12) that screws on valve body (1), valve block (11) connects, and acts on that spring (9) on the valve block (11) is contained in valve block (11) and silently between (10).
2, stop valve as claimed in claim 1 is characterized in that polyvinylfluoride pad (12) is inlaid in to compress or be screwed with compressing tablet (8) in the valve block (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91219400 CN2101800U (en) | 1991-07-30 | 1991-07-30 | Composite force type stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91219400 CN2101800U (en) | 1991-07-30 | 1991-07-30 | Composite force type stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2101800U true CN2101800U (en) | 1992-04-15 |
Family
ID=4926674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91219400 Withdrawn CN2101800U (en) | 1991-07-30 | 1991-07-30 | Composite force type stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2101800U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003046418A1 (en) * | 2001-11-26 | 2003-06-05 | Hongfu Wang | A reverse cut-off valve |
| CN100375856C (en) * | 2004-12-28 | 2008-03-19 | 何永水 | Balance type valve of electric valve |
| CN107355571A (en) * | 2017-08-18 | 2017-11-17 | 四川固特阀门制造有限公司 | One kind, which automatically resets, closes block valve |
-
1991
- 1991-07-30 CN CN 91219400 patent/CN2101800U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003046418A1 (en) * | 2001-11-26 | 2003-06-05 | Hongfu Wang | A reverse cut-off valve |
| CN100375856C (en) * | 2004-12-28 | 2008-03-19 | 何永水 | Balance type valve of electric valve |
| CN107355571A (en) * | 2017-08-18 | 2017-11-17 | 四川固特阀门制造有限公司 | One kind, which automatically resets, closes block valve |
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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 |