CN104265944A - Low-torque flexible sealing plug valve - Google Patents
Low-torque flexible sealing plug valve Download PDFInfo
- Publication number
- CN104265944A CN104265944A CN201410564586.4A CN201410564586A CN104265944A CN 104265944 A CN104265944 A CN 104265944A CN 201410564586 A CN201410564586 A CN 201410564586A CN 104265944 A CN104265944 A CN 104265944A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- valve seat
- low
- flexible sealing
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a low-torque flexible sealing plug valve and belongs to the field of valves. The low-torque flexible sealing plug valve comprises a valve body and a plug body, where a valve rod is connected onto the plug body, the upper portion of the valve rod is in threaded connection with the valve body, and a rolling bearing is further arranged between the valve rod and the valve body, close to the plug body. A stopping block is arranged at the upper portion of the rolling bearing and is larger than the bearing in width. A lifting step matched with the stopping block is arranged on the valve body. The plug body further tightly adheres to a valve seat. The valve seat is made from a polytetrafluoroethylene material and adopts a flexible sealing mode, and a sealing compensation mechanism is further arranged between the valve seat and the valve body. By means of the low-torque flexible sealing plug valve, the problem that the plug valve can be only applicable to a low-pressure environment can be effectively solved.
Description
Technical field
The present invention relates to valve field, specifically a kind of low torque soft sealing stopcock.
Background technique
Stopcock is mainly used in cutting off, connecting and throttle medium, is widely used in oilfield exploitation, conveying and refining equipment, is also widely used in petrochemical industry, chemical industry, coal gas, rock gas, liquefied petroleum gas (LPG), HVAC industry and general industry simultaneously.
State commonly used by stopcock is open in usual, when needs carry out locking to valve time, pulls valve rod, drives the faucet body choosing that upper-end surface is large, lower end surface is little to fill 90 degree, positive closing circulation passage.But in Long-Time Service process, faucet body due to pressure medium high, the moment of keying is large, and faucet body easily weares and teares, and usually can only be used in environment under low pressure.
In order to make stopcock be applicable in more occasions, the keying moment reducing stopcock is just extremely important.
summary of the inventionthe present invention aims to provide a kind of low torque soft sealing stopcock, reduces to reach the object that stopcock opens and closes moment.
For achieving the above object, technological scheme of the present invention is as follows:
A kind of low torque soft sealing stopcock, comprise valve body, faucet body, it is characterized in that: faucet body is connected with valve rod, valve rod top is connected with valve body screw thread, is also provided with rolling bearing between valve rod and valve body near faucet body; Described rolling bearing top is provided with block, and stop width is greater than the width of bearing; Described valve body is provided with the limited step of block adaptation; Described faucet body is also glued with valve seat, and valve seat is polytetrafluoroethylmaterial material soft seal, is also provided with sealing compensation mechanism between valve seat and valve body.
Further, described sealing compensation mechanism comprises jacking block, spring, and jacking block and the contact surface of valve seat have groove, and spring is arranged in groove;
Further, be provided with between described jacking block and valve body and seal O shape and enclose.
Beneficial effect of the present invention is:
One, on valve rod top with valve body junction for being threaded, the mode be threaded connection, when rotation valve rod, required firmly less.
Two, be also provided with rolling bearing between valve rod and valve body, rolling bearing effectively reduces the frictional force when opening and closing, and reduces and opens and closes moment, makes to be more prone to when opening and closing.
Three, rolling bearing is also provided with block, the width of block is greater than the width of bearing.Limited step on block and valve body with the use of, play and prevent rolling bearing from coming off, and limit the effect that faucet body moves up.
Four, adopt soft PTFE seal valve seat, sealability is better, solves the problem of general stopcock poor sealing performance.
Five, adopt valve seat to seal, change the sealing of the face of common stopcock into linear sealing, sealability is better.
Six, be also provided with sealing compensation mechanism between valve seat and valve body, wear and tear to some extent at soft valve seat, when occurring revealing, energy auto-compensation, makes its sealability again reach requirement.
Seven, in the hypodynamic situation of the pretension of spring, from outside, jacking block can also be held out against inwards, the pretightening force of counterbalance spring.
Accompanying drawing explanation
Fig. 1 is: the structural representation of stopcock provided by the invention;
Mark in figure: 1 be valve body, 2 be jacking block, 3 be spring, 4 be valve seat, 5 be faucet body, 6 be limited step, 7 be block, 8 be rolling bearing, 9 be valve rod, 10 be sealing O shape circle.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described.
As shown in Figure 1, a kind of low torque soft sealing stopcock, comprises valve body 1, faucet body 5, valve seat 4, it is characterized in that: faucet body 5 is connected with valve rod 9, and valve rod 9 top is threaded with valve body 1, is also provided with rolling bearing 8 between valve rod 9 and valve body 1 near faucet body 5; Described rolling bearing 8 top is provided with block 7, and block 7 width is greater than the width of bearing; Described valve body 1 is provided with the limited step 6 of block 7 adaptation; Described valve seat 4 is polytetrafluoroethylmaterial material soft seal, is also provided with sealing compensation mechanism between valve seat 4 and valve body 1.Described sealing compensation mechanism comprises jacking block 2, spring 3, and jacking block 2 and valve seat 4 surface of contact have groove, and spring 3 is arranged in groove.Be provided with between described jacking block 2 and valve body 1 and seal O shape and enclose 10.
In use, pull spanner, band ovable valve stem 9 rotates, be threaded between valve rod 9 with valve body 1, prolong screw thread to exert oneself downwards, when rotated, rolling bearing 8 rotates, compared to sliding bearing, can the less frictional force that must reduce between valve rod 9 and valve body 1, rolling bearing 8 is also provided with block 7, block 7 and the limited step 6 on valve body 1 with the use of, play and prevent rolling bearing 8 from coming off, and limit the effect that faucet body 5 moves up.Simultaneously owing to adopting the valve seat 4 of soft seal, specifically adopt polytetrafluoroethylmaterial material, its sealability is better.After valve seat 4, be also provided with spring 3 and jacking block 2, spring 3 is arranged in the groove of jacking block 2.When soft seal has certain wear out failure, spring 3 automatically can hold out against valve seat 4 and to fit faucet body 5, makes it again reach seal request.When the pretightening force of spring 3 is inadequate, hold out against jacking block 2 inwards, the pretightening force of jacking block 2 counterbalance spring 3.The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a low torque soft sealing stopcock, comprises valve body, faucet body, it is characterized in that: faucet body is connected with valve rod, and valve rod top is connected with valve body screw thread, is also provided with rolling bearing between valve rod and valve body near faucet body; Described rolling bearing top is provided with block, and stop width is greater than the width of bearing; Described valve body is provided with the limited step of block adaptation; Described faucet body is also glued with valve seat, and valve seat is polytetrafluoroethylmaterial material soft seal, is also provided with sealing compensation mechanism between valve seat and valve body.
2. low torque soft sealing stopcock according to claim 1, is characterized in that: described sealing compensation mechanism comprises jacking block, spring, and jacking block and the contact surface of valve seat have groove, and spring is arranged in groove.
3. low torque soft sealing stopcock according to claim 2, is characterized in that: be provided with between described jacking block and valve body and seal O shape and enclose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564586.4A CN104265944A (en) | 2014-10-21 | 2014-10-21 | Low-torque flexible sealing plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564586.4A CN104265944A (en) | 2014-10-21 | 2014-10-21 | Low-torque flexible sealing plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265944A true CN104265944A (en) | 2015-01-07 |
Family
ID=52157498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410564586.4A Pending CN104265944A (en) | 2014-10-21 | 2014-10-21 | Low-torque flexible sealing plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265944A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069513U (en) * | 1990-06-20 | 1991-01-16 | 陈志清 | Leakproof spherical valve |
| CN2154935Y (en) * | 1992-08-05 | 1994-02-02 | 王之昌 | Double sealed ball valve |
| US5894663A (en) * | 1996-03-27 | 1999-04-20 | Aeroquip Corporation | Method for forming a ball value assembly |
| CN201963929U (en) * | 2010-11-30 | 2011-09-07 | 北京航天万源煤化工工程技术有限公司 | High temperature resistant floating ball valve |
| CN203627874U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Filter type floating ball valve |
| CN203730815U (en) * | 2014-03-28 | 2014-07-23 | 浙江永盛仪表有限公司 | Floating hard-sealing ball valve |
| CN204083345U (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | A kind of low torque soft sealing stopcock |
-
2014
- 2014-10-21 CN CN201410564586.4A patent/CN104265944A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069513U (en) * | 1990-06-20 | 1991-01-16 | 陈志清 | Leakproof spherical valve |
| CN2154935Y (en) * | 1992-08-05 | 1994-02-02 | 王之昌 | Double sealed ball valve |
| US5894663A (en) * | 1996-03-27 | 1999-04-20 | Aeroquip Corporation | Method for forming a ball value assembly |
| CN201963929U (en) * | 2010-11-30 | 2011-09-07 | 北京航天万源煤化工工程技术有限公司 | High temperature resistant floating ball valve |
| CN203627874U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Filter type floating ball valve |
| CN203730815U (en) * | 2014-03-28 | 2014-07-23 | 浙江永盛仪表有限公司 | Floating hard-sealing ball valve |
| CN204083345U (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | A kind of low torque soft sealing stopcock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150107 |