CN101055039A - Forced sealing control valve - Google Patents
Forced sealing control valve Download PDFInfo
- Publication number
- CN101055039A CN101055039A CN 200710022376 CN200710022376A CN101055039A CN 101055039 A CN101055039 A CN 101055039A CN 200710022376 CN200710022376 CN 200710022376 CN 200710022376 A CN200710022376 A CN 200710022376A CN 101055039 A CN101055039 A CN 101055039A
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- valve
- seal
- gasket
- sleeve
- spool
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Abstract
The present invention relates to a strong seal control valve, concretely adapting the rigor medium work condition with high pressure difference and strong friction. The control valve mainly includes a valve body, an upper valve cover, a valve seat, and an upper valve spindle, and is characterized in that a valve core sleeve member is composed of a valve sleeve, a sealing gasket and a valve core, the valve sleeve lies on the outer side of the valve core sleeve member, a disk spring is disposed on the upper side of the valve sleeve, the sealing gasket is fixed between the valve core and a lower valve spindle, the lower valve spindle and the valve core are coupled together and disposed in the valve seat, a winding gasket is disposed between the upper valve cover and a guide seat. The invention can form a first seal by the valve sleeve and the valve seat to prevent the big medium particle flowing in and protect the seal members in the valve from being abraded, and can ensure a second seal for the seal gasket and the valve seal for long time, if the above two seals are invalid, the valve core and the valve seat can still form a third seal only if the valve sleeve and the seal gasket provide a certain throttle effect, the third seal can ensure the medium to be cut off, and can greatly reduce the rate of the generation of jamming fault and diminish the maintain work.
Description
Technical field
The present invention relates to a kind of forced sealing control valve, specifically adapt to the harsh medium operating mode of High Pressure Difference, strong friction, as the gas delivery of particle or powder.
Background technique
Before the present invention made, in prior art, common control valve sealing configuration mainly was made up of valve body, spool, valve rod, valve seat etc.Its sealing can be a metal hard-sealing, also can be teflon and intermetallic soft seal, but its common feature is that a resealing is only arranged.The control valve of this kind structure only is applicable to the adjusting or the cut-out of general medium.In the gas delivery operating mode of particle or powder, this kind control valve is by improving hardness and wear resistance at sealing position pile-up welding hard alloy, but effect is undesirable, has only two to three months working life, and it is very uneconomical frequently to change control valve, also is unfavorable for continuous production.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency; thereby provide a kind of forced sealing control valve; can make valve pocket and valve seat form first resealing; avoid big media particle to flow into; the Protective valve inner seal liner can not be worn; second resealing of long-acting assurance sealing gasket and valve seat; if above two seals lost efficacy; as long as valve pocket and sealing gasket provide certain restriction effect; spool and valve seat still can form three seals; this triple seal can guarantee that medium is cut off, and can reduce the probability that stuck fault takes place greatly, reduces maintenance work.
Main solution of the present invention is achieved in that
The present invention mainly adopts valve body to be connected with bonnet, valve seat is connected with valve body, in bonnet, install valve rod, feature is formed the spool external member by valve pocket, sealing gasket, spool, valve pocket is positioned at the outside of spool external member, has arranged belleville spring at the valve pocket upside, and sealing gasket is fixed between spool and the lower valve rod, lower valve rod and spool are equipped with at the valve seat upside, are provided with spirotallic gasket between bonnet, valve body and the guide holder.
Be provided with liner and guiding filler between described valve pocket and the guide holder, the guiding filler adopts polytetrafluoroethylmaterial material to make.
Described sealing gasket is provided with the profile of tooth groove.
O shape circle is set between described lower valve rod and the valve pocket.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; Because the sealed end of valve pocket is risked by two sections inclined-planes that are 30 degree and 60 degree angles with the cross section respectively, and rounding, reduce the touch opportunity with particle to greatest extent, and the assurance runner is unimpeded, does not gather particle; Valve pocket seal section pile-up welding hard alloy can be guaranteed hardness and wear resistance; O shape circle is set between described lower valve rod and the valve pocket, can stops particle to enter fitting surface, guarantee the valve rod long-term action freely; Do not have large particle between sealing surface, then valve pocket and valve seat can form good sealing (first weight); Owing to be subjected to the protection of valve pocket, sealing gasket and valve seat form the sealing of second road rapidly, the destruction that is subjected to particle therebetween hardly, and the sealing of second road belongs to soft seal, can guarantee zero leakage, and flowing of medium is cut off fully; If in the long-time running process, sealing gasket is worn, then as long as valve pocket and sealing gasket can provide certain restriction effect, avoid larger particles to flow into, spool and valve seat still can form three seals, guarantee that medium is cut off, and can reduce the probability that stuck fault takes place greatly, reduce maintenance work; Above-mentioned triple seal structure can be tackled such harsh operating mode fully, can realize long-term (more than 3 years) fault-free use.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a spool external member sectional drawing of the present invention.
Fig. 3 is a sealing configuration enlarged view of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention mainly is made up of valve body 1, bonnet 2, valve seat 3, spool 4, valve pocket 5, upper valve rod 6, sealing gasket 7, lower valve rod 8, liner 9, guiding filler 10, guide sleeve 11, guide holder 12, belleville spring 13, pre-load nut 14, pin 15, spirotallic gasket 31, matrix liner 32, filler 33,34, filler spacer 35, filler gland 36, Gland 37, stud 51,55, nut 52,56, O shape circle 53,54,57 etc.
As shown in Figure 1 and Figure 2: the key of triple seal of the present invention is the spool external member, and the spool external member is divided into valve pocket 5, sealing gasket 7,4 three parts of spool, and the sealing surface of valve seat 3 is widened, and adapts to new seal spool structure.
The sealed end of valve pocket 5 is risked by two sections inclined-planes that are 30 degree and 60 degree angles with the cross section respectively, and falls the fillet of R2, reduces the touch opportunity with particle to greatest extent, and guarantees that runner is unimpeded, does not gather particle.Valve pocket 5 whole 316 (the concrete materials) that adopt are made, and the seal section pile-up welding hard alloy is guaranteed hardness and wear resistance.
One end of spool 4 of the present invention is identical with the spool of general control valve, can be designed to the curve of equal percentage, linear or switching mode according to working condition requirement, in order to various control performance to be provided.The other end is a bolt structure, and guaranteeing to cooperate with lower valve rod 8 provides sealing gasket enough impacting forces after tightening.Simultaneously, under the ruined situation of sealing gasket, spool 4 still can form sealing with valve seat 3 during the valve complete shut-down.In addition, spool 4 is that 316 stainless steel materials are made, the sealing surface weld deposit cemented carbide.Valve seat 3 sealing surface weld deposit cemented carbide, the different pairings of the trade mark are used, and can improve working life.
Because the particle that medium carries is often not of uniform size, enter kinematic pair for stoping fines, adopted anti-jamming countermeasure, be separately positioned between the kinematic pair that reaches guide holder 12 and valve pocket 5 between the spool external member kinematic pair.In the spool external member, lower valve rod 8 is provided with O shape circle 57 between valve pocket 5, can stop particle to enter fitting surface, guarantees upper valve rod 6 long-term action freely.
Be provided with the guiding filler 10 and the liner 9 of two teflon between valve pocket 5 and guide holder 12, make valve pocket 5 when moving up and down, the particle that sticks to outer surface is blocked in outside the guiding filler 10, prevents that valve pocket 5 and guide sleeve 11 are stuck.Effect is remarkable in actual application, can reduce the probability that stuck fault takes place greatly, reduces maintenance work.
Valve body 1 and bonnet 2 employing flange Connecting format, the impacting force that stud 51 and nut 52 are tightened the back generation directly acts on two spirotallic gaskets 31 that are installed between valve body 1, guide holder 12 and the bonnet 2, guarantees that the sealing nothing leaks outside.
Working principle of the present invention:
Valve is the running from standard-sized sheet to complete shut-down, and valve pocket at first contacts valve seat, because sealing surface is very narrow, is similar to linear sealing, and particle or powder carry motion down at pressurized gas, and the probability that larger particles is clamped between sealing surface is minimum.As there not being large particle between sealing surface, then valve pocket and valve seat can form good sealing (first weight); There is smaller particles to be clamped between sealing surface as supposition; this moment is along with media flow; form previously described abrasion of grinding wheel effect; but because the existence of dish spring; valve rod still can be with other valve hole parts to move downward; owing to be subjected to the protection of valve pocket, sealing gasket and valve seat form the sealing of second road, the destruction that is subjected to particle therebetween hardly rapidly.The sealing of second road belongs to soft seal, can guarantee zero leakage, and flowing of medium being cut off fully at this moment; If in the long-time running process, sealing gasket is worn, then as long as valve pocket and sealing gasket can provide certain restriction effect, avoid larger particles to flow into, spool and valve seat still can form three seals, guarantee that medium is cut off; Above-mentioned triple seal structure can be tackled such harsh operating mode fully, can realize long-term (more than 3 years) fault-free use.
Claims (5)
1, a kind of forced sealing control valve, the main valve body (1) that adopts is connected with bonnet (2), valve seat (3) is connected with valve body (1), in bonnet (2), install valve rod (6), it is characterized in that by valve pocket (5), sealing gasket (7), spool (4) is formed the spool external member, valve pocket (5) is positioned at the outside of spool external member, arrange belleville spring (13) at valve pocket (5) upside, sealing gasket (7) is fixed between spool (4) and the lower valve rod (8), lower valve rod (8) is equipped with in valve seat (3) with spool (4), is provided with spirotallic gasket (31) between bonnet (2) and the guide holder (12).
2, forced sealing control valve according to claim 1 is characterized in that being provided with between described valve pocket (5) and the guide holder (12) liner 9 and guiding filler (10).
3, forced sealing control valve according to claim 2 is characterized in that described guiding filler (10) adopts polytetrafluoroethylmaterial material to make.
4, forced sealing control valve according to claim 1 is characterized in that described sealing gasket (7) is provided with the profile of tooth groove.
5, forced sealing control valve according to claim 1 is characterized in that being provided with between described lower valve rod (8) and the valve pocket (5) O shape circle (57).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100223762A CN100470103C (en) | 2007-05-16 | 2007-05-16 | Forced sealing control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100223762A CN100470103C (en) | 2007-05-16 | 2007-05-16 | Forced sealing control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101055039A true CN101055039A (en) | 2007-10-17 |
| CN100470103C CN100470103C (en) | 2009-03-18 |
Family
ID=38795022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100223762A Expired - Fee Related CN100470103C (en) | 2007-05-16 | 2007-05-16 | Forced sealing control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100470103C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748484A (en) * | 2012-07-23 | 2012-10-24 | 岳阳筑盛阀门管道有限责任公司 | Angle type drain valve |
| CN103032580A (en) * | 2012-12-27 | 2013-04-10 | 吴忠中创自控阀有限公司 | Multi-stage throttling regulation valve |
| CN106352102A (en) * | 2016-10-24 | 2017-01-25 | 周末 | Valve for engineering |
| CN110630759A (en) * | 2019-10-15 | 2019-12-31 | 永嘉企达知识产权咨询有限公司 | Prevent blockking up governing valve |
-
2007
- 2007-05-16 CN CNB2007100223762A patent/CN100470103C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748484A (en) * | 2012-07-23 | 2012-10-24 | 岳阳筑盛阀门管道有限责任公司 | Angle type drain valve |
| CN103032580A (en) * | 2012-12-27 | 2013-04-10 | 吴忠中创自控阀有限公司 | Multi-stage throttling regulation valve |
| CN103032580B (en) * | 2012-12-27 | 2014-11-05 | 吴忠中创自控阀有限公司 | Multi-stage throttling regulation valve |
| CN106352102A (en) * | 2016-10-24 | 2017-01-25 | 周末 | Valve for engineering |
| CN110630759A (en) * | 2019-10-15 | 2019-12-31 | 永嘉企达知识产权咨询有限公司 | Prevent blockking up governing valve |
| CN110630759B (en) * | 2019-10-15 | 2020-11-20 | 永嘉企达知识产权咨询有限公司 | Prevent blockking up governing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100470103C (en) | 2009-03-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20160516 |