CN2564806Y - Pushing force butterfly valve - Google Patents
Pushing force butterfly valve Download PDFInfo
- Publication number
- CN2564806Y CN2564806Y CN 02245631 CN02245631U CN2564806Y CN 2564806 Y CN2564806 Y CN 2564806Y CN 02245631 CN02245631 CN 02245631 CN 02245631 U CN02245631 U CN 02245631U CN 2564806 Y CN2564806 Y CN 2564806Y
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly plate
- valve rod
- butterfly
- limit
- 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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Abstract
The utility model relates to a pushing force butterfly valve, which comprises a valve body, a valve rod, a butterfly plate and a valve seat, wherein, the valve rod is connected with one side of the butterfly plate via a four bar linkage, and the base side of the four bar linkage is fixedly connected with the inner wall of the valve body. Two ends of the base side are respectively and rotatablely connected with the inner end of the valve rod and a rocking side, and a driving side is arranged in parallel with the rocking side. One end of the rocking side is fixedly connected with the inner end of the valve rod, and the other end of the driving side and the other end of the rocking side are rotatablely connected with the connecting bar side of the four bar linkage. One end of the connecting bar side is vertically and fixedly connected with the middle part of one side of the butterfly plate, and the sealed surface of the valve seat is vertical with the shaft center of the valve body. The butterfly plate can separate from the valve seat along the axial direction when the utility model is opened and then can deflect gradually, and thus the sealed surface can not generate relative friction without abrasion basically. Sealing performance is enhanced, and service life is prolonged. Since the sealed surface is a plane which is vertical with the axial direction, the phenomenon of seizure caused by the expansion of the butterfly plate due to high temperature can not be generated.
Description
Background techniqueThe utility model relates to a kind of pipeline valve, particularly a kind of Pushing force butterfly valve.
Background technique
The valve rod of existing reed valve is radially fixedlyed connected with butterfly plate, utilizes valve rod rotation drive butterfly plate radially to turn an angle and realizes the keying of valve, and its sealing surface is the outer edge surface of butterfly plate and the circumference inner face of ring-shaped valve seats.The shortcoming of this structure is that sealing surface weares and teares easily, causes leaking, and has a strong impact on its working life.In the application of High Temperature High Pressure, sealing surface is a metal, and butterfly plate is prone to stuck phenomenon, makes defective valve.
Summary of the invention
The purpose of this utility model just provides a kind of good airproof performance, do not have wearing and tearing, the Pushing force butterfly valve of stuck phenomenon can not occur.
The technical solution of the utility model is: comprise valve body, valve rod, butterfly plate and valve seat, described valve rod is connected with butterfly plate one side by a quadratic crank mechanism, the basic limit and the described valve interior wall of this quadratic crank mechanism are connected, inner and the swing limit of the valve rod that is rotationally connected respectively at the two ends on this base limit, with this swing limit one parallel driving limit is arranged, one end and valve rod the inner are connected, the other end on its other end and above-mentioned swing limit all is rotationally connected an end of this link side and vertical being connected of described butterfly plate one middle side part with the link side of quadratic crank mechanism; The sealing surface of described valve seat is vertical with the valve body axle center.
The sealing surface of described valve seat is a metal covering.
The sealing surface of described valve seat is a non-metallic layer.
The utility model its butterfly plate when opening is lifted off a seat earlier vertically, deflection gradually again, so its sealing surface can not produce relative friction, basic not wearing and tearing have improved sealing greatly, have prolonged working life; Because its sealing surface is and axial vertical plane, so can not make the butterfly plate expansion cause stuck phenomenon by Yin Gaowen.
Description of drawingsFig. 1 is an axial sectional view of the present utility model; Fig. 2 is the utility model opening process schematic representation.
Embodiment
Referring to Fig. 1, the utility model comprises valve body 1, valve rod 2, butterfly plate 3 and valve seat 4, described valve rod 1 is connected with a side of butterfly plate 3 by a quadratic crank mechanism 5, the basic limit 51 of this quadratic crank mechanism 5 is connected with the inwall of described valve body 1, the end on the inner of valve rod 2 and swing limit 52 is rotationally connected respectively at the two ends on this base limit 51, with this swing limit 52 a parallel driving limit 53 is arranged, the inner of one end and valve rod 1 is connected, the other end on its other end and above-mentioned swing limit 52 all is rotationally connected an end of this link side 54 and vertical being connected of described butterfly plate 3 one middle side parts with the link side 54 of quadratic crank mechanism 5; The sealing surface 41 of described valve seat 4 is vertical with the axle center of valve body 1.Sealing surface 41 can be a metal, also can be nonmetal.
Referring to Fig. 2, when opening the utility model, driving limit 53 deflections in the quadratic crank mechanism 5 that drives in the valve bodies 1 by rotation valve rod 2 make butterfly plate 3 at first along 4 (referring to the 3-1 among the figure) that axially lift off a seat of valve body 1.Then, along with the deflection that drives limit 53, butterfly plate 3 tilts gradually.After driving 90 ° of limit 53 deflections, butterfly plate 3 also deflection 90 °, this moment, valve was all opened.Its pass closed procedure is opposite with opening process, no longer strolls and states.
Claims (3)
1, a kind of Pushing force butterfly valve, comprise valve body, valve rod, butterfly plate and valve seat, it is characterized in that: described valve rod is connected with butterfly plate one side by a quadratic crank mechanism, the basic limit and the described valve interior wall of this quadratic crank mechanism are connected, inner and the swing limit of the valve rod that is rotationally connected respectively at the two ends on this base limit, with this swing limit one parallel driving limit is arranged, one end and valve rod the inner are connected, the other end on its other end and above-mentioned swing limit all is rotationally connected an end of this link side and vertical being connected of described butterfly plate one middle side part with the link side of quadratic crank mechanism; The sealing surface of described valve seat is vertical with the valve body axle center.
2, Pushing force butterfly valve according to claim 1 is characterized in that: the sealing surface of described valve seat is a metal covering.
3, Pushing force butterfly valve according to claim 1 is characterized in that: the sealing surface of described valve seat is a non-metallic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245631 CN2564806Y (en) | 2002-08-09 | 2002-08-09 | Pushing force butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02245631 CN2564806Y (en) | 2002-08-09 | 2002-08-09 | Pushing force butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2564806Y true CN2564806Y (en) | 2003-08-06 |
Family
ID=33717169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02245631 Expired - Fee Related CN2564806Y (en) | 2002-08-09 | 2002-08-09 | Pushing force butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2564806Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424870A (en) * | 2011-11-30 | 2012-04-25 | 中冶南方工程技术有限公司 | Lower sealing valve for bell-less top of blast furnace |
| CN106090252A (en) * | 2016-08-10 | 2016-11-09 | 南方风机股份有限公司 | A kind of many bars that can open and close safely drive leafy isolating valve |
| CN110735932A (en) * | 2019-10-10 | 2020-01-31 | 常州大学 | Connecting rod butterfly valve with connecting rod adjusting mechanism |
-
2002
- 2002-08-09 CN CN 02245631 patent/CN2564806Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424870A (en) * | 2011-11-30 | 2012-04-25 | 中冶南方工程技术有限公司 | Lower sealing valve for bell-less top of blast furnace |
| CN106090252A (en) * | 2016-08-10 | 2016-11-09 | 南方风机股份有限公司 | A kind of many bars that can open and close safely drive leafy isolating valve |
| CN110735932A (en) * | 2019-10-10 | 2020-01-31 | 常州大学 | Connecting rod butterfly valve with connecting rod adjusting mechanism |
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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 |