CN201818881U - Gas cut-off valve - Google Patents
Gas cut-off valve Download PDFInfo
- Publication number
- CN201818881U CN201818881U CN2010202617200U CN201020261720U CN201818881U CN 201818881 U CN201818881 U CN 201818881U CN 2010202617200 U CN2010202617200 U CN 2010202617200U CN 201020261720 U CN201020261720 U CN 201020261720U CN 201818881 U CN201818881 U CN 201818881U
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- CN
- China
- Prior art keywords
- connecting rod
- valve
- valve body
- valve plate
- main shaft
- 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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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a gas cut-off valve which comprises a vertical valve plate, a valve plate, a main shaft passing through the valve body, and a driving device assembled at the shaft end of the main shaft; one end of a driving connecting rod is fixed on the main shaft; the other end of the driving connecting rod is connected with a middle connecting rod; a short shaft is arranged at the other side of the central line of the valve body; a driven connecting rod is connected with the short shaft movably; the other end of the driven connecting rod is connected with the middle connecting rod; the middle part of the middle connecting rod is connected with a lifting connecting rod by a pin shaft; and the other end of the lifting connecting rod is arranged in a fixed hole of the valve plate. The gas cut-off valve has the advantages that the connecting rod mechanism principle is used, so that the lifting connecting rod can be used for lifting the valve plate in the direction approximately in parallel with the vertical central line of the valve; the lateral force generated by the driving connecting rod can be eliminated, the running resistance of the valve plate can be reduced, thus effectively improving the running stability of the valve; and furthermore, the service life of the valve can be prolonged, and the cut-off valve used for air and coal gas is especially suitable for metallurgical hot-blast stoves of blast furnaces.
Description
Technical field
The utility model relates to a kind of cut-off valve, particularly a kind of linkage type shut off gas valve that is applied to blast funnace hot blast stove system gas pipeline.
Background technique
Blast-furnace hot-air furnace system transfer line extensive use all gases cutting-off valve, these cutting-off valves mainly adopt open-bar wedge single slide valve plate gate valve, the valve rod of this valve runs through valve body by top and is connected with valve plate in the valve body, be configured the transmission device poppet stem on the outside gear frame of valve body, control valve plate motion is finished valve open or is closed.Such valve can be divided into rising stem (RS.) transmission and dark two kinds of principal modes of bar transmission.The Single disc gate valve adopts the casting valve body more, and valve body top is provided with gear frame, and valve rod and valve body cooperation place are provided with valve rod sealing device.The sealability of this valve is stable, long service life, but because of being provided with gear frame and valve plate counterweight, cause the valve volume and weight huge, very big to the pipe line arrangement influence, the reciprocating movement sealing problem is not easy to solve between valve rod and valve body simultaneously, has the valve rod leakage problem.
For solving the problem that there is the huge and valve stem seal of relative volume in open-bar wedge single slide valve plate gate valve, Chinese patent publication number CN2197531 discloses a kind of technological scheme of shut off gas valve, this technology fork is positioned at valve inner, main shaft is connected with valve plate through connecting rod by fork, the solution of the shut off gas valve of this kind structure bulky problem, main shaft seal improves simultaneously, but structural characteristics because of its fork and link configurations, the connecting end of fork and connecting rod is movement in a curve, cause connecting rod in the valve plate lifting process, valve plate to be produced bigger cross component force, this power is pressed to valve plate on the guide rail of valve body one side, make the friction and wear aggravation of valve plate and guide rail, cause the valve plate jam when serious, the accident of main shaft fracture, there is device security hidden danger, limited the application of Crank valve.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of shut off gas valve flexible, that link configurations is reasonable, valve plate moves no jam, is adapted at working under the High Temperature High Pressure that opens and closes is provided.
The technological scheme that realizes above-mentioned purpose is: a kind of shut off gas valve, it comprises perpendicular type valve body, valve plate, run through the main shaft of valve body and be assemblied in the drive unit of main-axis end, one end of drive connecting rod is fixedly connected on the main shaft, the front end and the intermediate connecting rod of drive connecting rod are hinged by bearing pin, opposite side at the valve body center line is equipped with minor axis, follower link and minor axis are rotationally connected, the other end and the intermediate connecting rod of follower link are hinged by bearing pin, the intermediate connecting rod middle part is installed bearing pin and is rotationally connected with the lifting connecting rod, an end that promotes connecting rod is connected with fixed shaft hole on the valve plate through bearing pin, and guide rail is fixedly mounted on valve body vertical center line both sides and is parallel to the valve vertical center line.The bearing pin joint of the place of being rotatably assorted of follower link (4) and minor axis (5) and drive connecting rod (7), intermediate connecting rod (9), lifting connecting rod (11) is respectively fitted with the self-lubricating solid bearing.
The utility model utilizes the linkage mechanism principle to make the middle bearing pin of intermediate connecting rod do approximate straight line motion along the valve vertical center line in lifting process, the middle part articulating point of intermediate connecting rod is similar to the line that promotes connecting rod and valve plate articulating point and is parallel to the valve vertical center line like this, promptly promote connecting rod and promote valve plate with the approximate valve plate travel direction that is parallel to, eliminated the lateral force of drive connecting rod transmission, valve plate when promoting and descend and the valve body guide rail do not have forced friction, reduced the valve plate running resistance, alleviated the friction of valve plate and guide rail, thereby effectively improve the valve operation stability, the valve plate flexible operation, and prolong valve working life, be applicable to the high temperature and high pressure environment of blast-furnace hot-air furnace system.
Description of drawings
Fig. 1 is the structural front view of this shut off gas valve;
Fig. 2 is the left view of Fig. 1.
Embodiment
In conjunction with the accompanying drawings embodiment of the present utility model is described:
The utility model includes perpendicular type valve body (1), in valve body (1), dispose valve plate (2), valve plate (2) cooperates with guide rail (3) on being fixed on valve body (1), run through the main shaft (6) of valve body (1) and be assemblied in the drive unit of main shaft (6) axle head, go up close valve body (1) one side at main shaft (6) and be fixedly connected with drive connecting rod (7) by key, the front end of drive connecting rod (7) and intermediate connecting rod (9) are hinged by bearing pin (8), opposite side at the valve body center line is equipped with the minor axis (5) that is sealed in valve inner, follower link (4) is rotationally connected with minor axis (5), the other end of follower link (4) and intermediate connecting rod (9) are hinged by bearing pin (12), intermediate connecting rod (9) middle part is installed bearing pin (10) and is rotationally connected with promoting connecting rod (11), and an end that promotes connecting rod (11) is connected with fixed shaft hole on the valve plate (2) through bearing pin (13).During this shut off gas opening of valves, oil hydraulic cylinder (15) drives driving crank (14), driving crank (14) drives main shaft (6) and rotates, main shaft (6) is being with drive connecting rod (7) to rotate, under the acting in conjunction of drive connecting rod (7) and follower link (4), intermediate connecting rod (9) rotates while promoting, and approximate straight line motion is done along the valve vertical center line in the middle hinge shaft hole (8) of intermediate connecting rod (9), promotes connecting rod (11) along the approximate direction lifting valve plate (2) that is parallel to the valve vertical center line thereby make.
Claims (2)
1. shut off gas valve, it comprises perpendicular type valve body (1), be disposed at the valve plate (2) in the valve body (1), run through the main shaft (6) of valve body (1) and be assemblied in the drive unit of main shaft (6) axle head, it is characterized in that: an end of drive connecting rod (7) is connected on the main shaft (6) in valve body (1) internal fixation, the other end of drive connecting rod (7) is connected by bearing pin (8) with intermediate connecting rod (9), the opposite side of valve body center line is equipped with minor axis (5) in valve body (1), one end of follower link (4) and minor axis (5) are rotationally connected, the other end of follower link (4) and intermediate connecting rod (9) are hinged by bearing pin (12), intermediate connecting rod (9) middle part is installed bearing pin (10) and is rotationally connected with promoting connecting rod (11), and an end that promotes connecting rod (11) is connected with fixed shaft hole on the valve plate (2) through bearing pin (13).
2. shut off gas valve according to claim 1 is characterized in that: the bearing pin joint of the place of being rotatably assorted of follower link (4) and minor axis (5) and drive connecting rod (7), intermediate connecting rod (9), lifting connecting rod (11) is respectively fitted with the self-lubricating solid bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202617200U CN201818881U (en) | 2010-07-08 | 2010-07-08 | Gas cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202617200U CN201818881U (en) | 2010-07-08 | 2010-07-08 | Gas cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201818881U true CN201818881U (en) | 2011-05-04 |
Family
ID=43916833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202617200U Expired - Fee Related CN201818881U (en) | 2010-07-08 | 2010-07-08 | Gas cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201818881U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434690A (en) * | 2011-12-01 | 2012-05-02 | 辽宁能发伟业能源科技有限公司 | Opening-assisting method and opening-assisting device of check valve |
| CN103216670A (en) * | 2012-01-20 | 2013-07-24 | 哈米尔顿森德斯特兰德公司 | Crank |
| CN106755679A (en) * | 2017-01-17 | 2017-05-31 | 山东钢铁集团日照有限公司 | A kind of top gas stop valve |
-
2010
- 2010-07-08 CN CN2010202617200U patent/CN201818881U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434690A (en) * | 2011-12-01 | 2012-05-02 | 辽宁能发伟业能源科技有限公司 | Opening-assisting method and opening-assisting device of check valve |
| CN103216670A (en) * | 2012-01-20 | 2013-07-24 | 哈米尔顿森德斯特兰德公司 | Crank |
| CN103216670B (en) * | 2012-01-20 | 2017-09-12 | 哈米尔顿森德斯特兰德公司 | Crank |
| CN106755679A (en) * | 2017-01-17 | 2017-05-31 | 山东钢铁集团日照有限公司 | A kind of top gas stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20110708 |