CN201963904U - Butterfly valve - Google Patents
Butterfly valve Download PDFInfo
- Publication number
- CN201963904U CN201963904U CN2010206695548U CN201020669554U CN201963904U CN 201963904 U CN201963904 U CN 201963904U CN 2010206695548 U CN2010206695548 U CN 2010206695548U CN 201020669554 U CN201020669554 U CN 201020669554U CN 201963904 U CN201963904 U CN 201963904U
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- China
- Prior art keywords
- valve
- bearing
- valve body
- valve rod
- rod
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a butterfly valve, which comprises a valve body and a valve rod rotatably arranged inside the valve body. Bearings are arranged at the valve body at positions respectively corresponding to the two ends of the valve rod. The valve rod is rotatably arranged on the valve body through the bearings, therefore sliding friction between the valve rod and the valve body in the existing butterfly valve can be transferred to rolling friction between the bearings, resistance the valve rod meets during rotation is greatly reduced, and the rotating resistance the two ends of the valve rod bear is equal, thereby resolving the problem of uneven force bearing when the valve rod rotates.
Description
Technical field
The utility model relates to valve technology field, especially a kind of butterfly valve.
Background technique
Butterfly valve is meant that open-shut device is a disk, rotates a kind of valve that reaches open and close around valve shaft, and main rising cut off and throttling usefulness on pipeline.The butterfly valve open-shut device is a discoidal valve plate, and the axis around himself in valve body rotates, thereby reaches the purpose that opens and closes or regulate.Normally less than 90 °, butterfly valve and butterfly bar itself do not have self-lock ability to the butterfly valve standard-sized sheet to complete shut-down, for the location of valve plate, install worm speed reducer additional on valve rod.Adopt worm speed reducer, not only can make valve plate have self-lock ability, valve plate is stopped on the arbitrary position, can also improve the operating characteristics of valve.Therefore the structure of visible butterfly valve mainly comprises valve body, is arranged in valve rod, turbine box and valve plate in the valve body in the market, wherein valve rod rotates and is assemblied in the valve body (valve rod generally runs through valve body), valve rod one end transmission inserts described turbine box, and valve plate fixedly is assemblied on the valve rod.Above-mentioned butterfly valve is in when work, comes the rotation of actuate valve stem and then the rotation by valve rod to drive that valve plate is opened or the valve port of closed valve by turbine box, realizes the conducting and the partition of medium pipeline; Above-mentioned butterfly valve is less at the medium pipeline flow, has promptly obtained having used widely and having obtained good effect under the less situation of bore; But when the medium pipeline bore is big, because the valve plate compression area of above-mentioned butterfly valve is bigger, thereby make the pressure that valve rod bore increase, and because the valve rod of above-mentioned butterfly valve is that direct inserting is on valve body, its stressed fulcrum is the point of contact of two ends and valve body, therefore in the moving process of valve plate, valve rod is not very easily because the friction torque between its two fulcrum and the valve body waits and unbalance stress, and then the distortion that deforms, in addition because valve rod is to cooperate with the sliding friction form by the direct support of valve body and with the valve body corresponding position, therefore friction torque is bigger under the pressurized condition, damage the working life of the driving mechanism in the turbine box easily, and then influence the working life of above-mentioned butterfly valve.
Summary of the invention
The purpose of this utility model is to provide a kind of butterfly valve, to solve the problem of the valve rod unbalance stress when rotating that has butterfly valve now.
In order to address the above problem, butterfly valve of the present utility model is by the following technical solutions: a kind of butterfly valve, comprise that valve body and rotation are assemblied in the valve rod in the described valve body, place, the two ends of corresponding described valve rod all is equipped with bearing on the described valve body, and described valve rod rotates by described bearing and is assemblied on the described valve body.
Described valve rod runs through the corresponding both sides of described valve body, and described each bearing all is arranged at the outside of described valve body by the bearing support of correspondence.
Described bearing comprises that being arranged at described valve rod is used for transmission and inserts the valve head bearing of an end of turbine box and the valve tail bearing of the other end, and described valve tail bearing is a thrust-bearing.
Because the valve rod of butterfly valve of the present utility model is to rotate by bearing to be assemblied in the described valve body, therefore the sliding friction that has the valve rod of butterfly valve and valve body now can be converted into the rolling friction of bearing, thereby reduced described valve rod greatly and when rotating, be subjected to resistance, and make the suffered rotational resistance equal and opposite in direction at valve rod two ends, solved the problem of valve rod unbalance stress when rotating.
Further, described stem bearing is arranged at the outside of described valve body, is convenient to maintenance and changes; Described valve tail bearing adopts thrust-bearing, and described valve tail bearing adopts thrust-bearing, can bear the gravity of valve rod and do not damage when work.
Description of drawings
Fig. 1 is a kind of embodiment's of a butterfly valve of the present utility model structural representation.
Embodiment
The embodiment 1 of butterfly valve of the present utility model, as shown in Figure 1, form by turbine box 1, valve head bearing support 2, valve head bearing 3, valve body 4, valve head sealing axle sleeve 5, valve head stuffing box 6, valve rod 7, valve plate 8, valve plate seal ring 9, taper pin 10, valve tail filler culvert 11, valve tail sealing axle sleeve 12, valve tailing axle bearing 13, valve tail bearing 14 and bearing-shield 15.Valve rod 7 rotates and is assemblied in the valve body 4, and valve rod 7 runs through the circumferential two side of valve body 4, and turbine box 1 is assemblied in a side of valve body 4, more than each parts assembly relation be prior art, repeat no more herein; The two ends of valve head bearing support 2 are connected with the respective side of turbine box 1 and valve body 4 respectively, valve head bearing 3 is arranged in the valve head bearing support 2, the corresponding end of valve rod 7 is assemblied in the valve head bearing 3 and extends transmission vertically and insert turbine box 1, valve head sealing axle sleeve 5 is sheathed on the valve rod 7 and by bolt and is fixedly arranged on the side of valve body 4 near turbine box 1, valve head stuffing box 6 is pressed and is located between valve head sealing axle sleeve 5 and the valve body 4, is used to guarantee being sealed and matched of corresponding opening between valve rod 7 and the valve body 4; Valve plate 8 is fixed on the valve rod 7 by taper pin 10, is used for coming the opening and closing of fault valve passage with the rotation of valve rod 7; Valve plate seal ring 9 is arranged at valve plate 8 peripheral edges, is used to guarantee being sealed and matched between valve plate 8 and the valve body 4; Valve tailing axle bearing 13 is arranged at axially with the turbine box 1 relative side outside of valve body 4 along valve rod 7, valve tailing axle bearing 13 is connected with valve body 4, valve tail bearing 14 is arranged in the valve tailing axle bearing 13, the corresponding end of valve rod 7 is rotated by valve tailing axle bearing 13 and is assemblied in the valve tailing axle bearing 13, valve tail sealing axle sleeve 12 correspondences are fixed on the valve body 4 by screw, and valve tail stuffing box 11 is pressed and is located between valve tail sealing axle sleeve 12 and the valve body 4; Valve head bearing 3 and valve tail bearing 14 are covered with by bearing-shield 15 sealings of correspondence respectively; Above-mentioned valve head, valve tail bearing are interior heart ball bearing.
In the foregoing description, described valve tail bearing can also adopt thrust-bearing, and described valve head, valve tail bearing can also directly be assemblied in the valve body corresponding position.
Claims (3)
1. a butterfly valve comprises that valve body and rotation are assemblied in the interior valve rod of described valve body, and it is characterized in that: bearing is located all to be equipped with in the two ends of corresponding described valve rod on the described valve body, and described valve rod rotates by described bearing and is assemblied on the described valve body.
2. butterfly valve according to claim 1 is characterized in that: described valve rod runs through the corresponding both sides of described valve body, and described each bearing all is arranged at the outside of described valve body by the bearing support of correspondence.
3. butterfly valve according to claim 1 is characterized in that: described bearing comprises that being arranged at described valve rod is used for transmission and inserts the valve head bearing of an end of turbine box and the valve tail bearing of the other end, and described valve tail bearing is a thrust-bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206695548U CN201963904U (en) | 2010-12-20 | 2010-12-20 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206695548U CN201963904U (en) | 2010-12-20 | 2010-12-20 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963904U true CN201963904U (en) | 2011-09-07 |
Family
ID=44526440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206695548U Expired - Fee Related CN201963904U (en) | 2010-12-20 | 2010-12-20 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322211A (en) * | 2013-06-24 | 2013-09-25 | 浙江中德自控阀门有限公司 | Metal sealed butterfly valve without pin connection |
| CN109931419A (en) * | 2019-04-09 | 2019-06-25 | 温州市瓯斯特阀门有限公司 | A kind of wear-resisting separable type fixing ball valve |
-
2010
- 2010-12-20 CN CN2010206695548U patent/CN201963904U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322211A (en) * | 2013-06-24 | 2013-09-25 | 浙江中德自控阀门有限公司 | Metal sealed butterfly valve without pin connection |
| CN103322211B (en) * | 2013-06-24 | 2016-06-29 | 浙江中德自控科技股份有限公司 | A kind of without pin connection metallic seal butterfly valve |
| CN109931419A (en) * | 2019-04-09 | 2019-06-25 | 温州市瓯斯特阀门有限公司 | A kind of wear-resisting separable type fixing ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110907 Termination date: 20161220 |