CN2308769Y - Pneumatic butterfly valve - Google Patents
Pneumatic butterfly valve Download PDFInfo
- Publication number
- CN2308769Y CN2308769Y CN 97224037 CN97224037U CN2308769Y CN 2308769 Y CN2308769 Y CN 2308769Y CN 97224037 CN97224037 CN 97224037 CN 97224037 U CN97224037 U CN 97224037U CN 2308769 Y CN2308769 Y CN 2308769Y
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- CN
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- Prior art keywords
- flap
- utility
- model
- valve
- main shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a pneumatic butterfly valve. The utility model is characterized in that a piston in a cylinder is connected with a valve flap by a connecting rod, a crank, a main shaft and a lever which are orderly connected with the piston, the other end of the lever is connected with the valve flap in tight press contact by a flexible piece and a thimble which are connected with the level, the valve flap is connected with a sealing ring fixed on a valve body in the tight press sealing of a surface and the valve flap and the sealing ring adopt metal sealing pairs. Thereby, the utility model has the advantages of high temperature resistance, long service life, good sealing effect, flexible opening and stable and reliable operation. The utility model can ensure that an air separation device continuously and reliably run in two years without changing a wearing part. The service life of the utility model can reach at least 10 years.
Description
The utility model relates to a kind of valve, particularly Pneumatic butterfly valve
At present, empty branch trade extensively adopts molecular sieve preliminary clearning flow process in air low temperature liquefaction stripping technique, therefore its medium temperature requires 200 ℃ of heatproofs to the valve that is adopted than higher, and requires sealing reliable, open flexibly, cycle of oparation reached more than 2 years.Also adopt a kind of Pneumatic butterfly valve now, it be by cylinder, and cylinder by bar, crank, main take out with place valve body in flap is connected and constitutes, adopt rubber seal to seal between flap and the valve body.This butterfly valve one is that component processing cumulative error is big, can cause sealing surface gap, assembling back big or magnitude of interference is big, and not have mean of calculating, so sealing effect is not good enough; The 2nd, adopt crank, linkage mechanism, because valve opening power is bigger, cause the piston Driving force deficiency of actuator, make valve event slow, open dumb; The 3rd, adopt the rubber ring crush seal, its heatproof is poor, and easily aging, fragile, working life is short.Thereby influenced the stable operation of complete air separation plant.
The purpose of this utility model is to provide a kind of Pneumatic butterfly valve, and it can improve sealing effect effectively, and opens flexibly long service life.
Its solution is: the piston rod in the cylinder is connected with connecting rod, and connecting rod is connected with main shaft by connected crank, main shaft is by being positioned at valve body and connected lever is connected with flap, the other end of the lever flexible member interior with being contained in fixed cover is connected, the thimble that the flexible member warp is connected with it compresses with flap and contacts, constitute three connecting-rod force increasing devices, can make the actuator of valve increase Driving force effectively, thereby guarantee that valve opening is flexible, steadily reliable, and flap is tightly connected for the plane back pressure type with the hard seal ring that is fixedly connected on the valve body, and seal ring is made by metallic material.
The utility model mainly is that the interior piston rod of cylinder is by being connected with flap with its connecting rod that is connected successively, crank, main shaft, lever, and the other end of lever compresses with flap by connected flexible member and thimble and contacts, flap is tightly connected for the plane back pressure type with the seal ring that is fixed on the valve body, and adopts metal-seated.So its heatproof height, long service life, through being equivalent to more than 6000 the simulated condition test of air separation plant real-world operation more than 3 years, its performance all reaches designing requirement.Shut down the back strip inspection, each parts is excellent, and sealing effect does not have leakage.And owing to adopt the back pressure type sealing, pressure medium is high more, and the sealing effect Yu of healing seals reliable more.Again owing to be connected with three connecting-rod force increasing devices in the employing actuator, it can make butterfly valve maximum boost in whole operation process reach 7 times, so butterfly valve is opened flexibly, running steadily, reliably, thereby can guarantee the continuous reliable operation of air separation plant, need not change easily damaged parts, valve can reach 10 years working life at least.Air separation plant is used for oxygen steelmaking, long because of its cycle of oparation, can avoid effectively leaking and shutdown loss, so in iron and steel production, can save energy 2%, volume increase 3%.
Embodiment of the present utility model is described in detail in conjunction with the accompanying drawings.
Fig. 1 is the plan view of Pneumatic butterfly valve.
Fig. 2 is the plan view of Pneumatic butterfly valve.
Fig. 3 is the side view of Pneumatic butterfly valve.
Fig. 4 is the plan view of Pneumatic butterfly valve valve body.
Fig. 5 is the A-A sectional view among Fig. 4.
Fig. 6 is the B-B sectional view among Fig. 4.
Among Fig. 1 to Fig. 6, the top of crank box (3) is communicated with cylinder (1) by screw, and middle base (4) links into an integrated entity crank box (3) and valve body (7) by screw.The piston rod (2) that is connected with piston in the cylinder (1) is connected with connecting rod (6) by adjusting screw (5), connecting rod (6) is through being connected with main shaft (8) with its hinged crank (9), be positioned at the lever (16) of valve body (7), the one end all adopts key (17) or pin (10) to be connected with main shaft (8) and flap (11), constitute three connecting-rod force increasing devices, the other end of lever (16) is connected with flexible member spring (14) in being contained in fixed cover (15), and thimble (12) is equipped with on the top of spring (14), it compresses contact with flap (11) and is connected, flap (11) is made by stainless steel material, it be fixedly connected on copper sealing ring (13) on the valve body (7) and adopt the plane to compress to be tightly connected.
During use, butterfly valve is communicated with the medium transport pipeline by flange (18).If Open valve, power gas source enters in the cylinder (1), the promotion piston moves upward, and drive main shaft (8) by piston rod (2), connecting rod (6), crank (9) and clockwise rotate, main shaft (8) drives upwards translation and rotating backward of flap (11) by lever (16), and along with the continuation rotation of main shaft (8), flap (11) breaks away from sealing surface gradually, and increase opening angle gradually, up to full open mode; During throttle down, its action is just in time opposite with breakdown action, at this moment, piston in the cylinder (1) moves downward, and along with being rotated further of main shaft (8), flap (11) is under the effect of lever, return successively, compress sealing with seal ring (13), flap (11) is in closed condition, opens and closes circulation thereby finish one.
Claims (2)
1, a kind of Pneumatic butterfly valve, comprise cylinder, cylinder passes through connecting rod, crank, the main shaft flap interior with placing valve body is connected, and adopt seal ring to seal between flap and the valve body, it is characterized in that the piston rod (2) in the cylinder (1) is connected with connecting rod (6), connecting rod (6) is connected with main shaft (8) by connected crank (9), main shaft (8) is connected with flap (11) by the lever (16) that is positioned at valve body (7) and is connected with main shaft (8), the other end of lever (16) flexible member (14) interior with being contained in fixed cover (15) is connected, the thimble (12) that flexible member (14) warp is connected with it compresses contact with flap (11) and is connected, constitute three connecting-rod force increasing devices, and flap (11) for compressing, the plane is tightly connected with the hard seal ring (13) that is connected on the valve body (7).
2, Pneumatic butterfly valve as claimed in claim 1 is characterized in that hard seal ring (13) made by metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224037 CN2308769Y (en) | 1997-08-09 | 1997-08-09 | Pneumatic butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224037 CN2308769Y (en) | 1997-08-09 | 1997-08-09 | Pneumatic butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2308769Y true CN2308769Y (en) | 1999-02-24 |
Family
ID=33938536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224037 Expired - Fee Related CN2308769Y (en) | 1997-08-09 | 1997-08-09 | Pneumatic butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2308769Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775841A (en) * | 2014-01-15 | 2014-05-07 | 深圳市森讯达电子技术有限公司 | Emergency electric torch |
| CN106122489A (en) * | 2015-05-07 | 2016-11-16 | 艾默生过程管理调节技术公司 | The actuator of shut-off valve is limited for having the low flowing of overflow closing function |
-
1997
- 1997-08-09 CN CN 97224037 patent/CN2308769Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775841A (en) * | 2014-01-15 | 2014-05-07 | 深圳市森讯达电子技术有限公司 | Emergency electric torch |
| CN106122489A (en) * | 2015-05-07 | 2016-11-16 | 艾默生过程管理调节技术公司 | The actuator of shut-off valve is limited for having the low flowing of overflow closing function |
| US10344880B2 (en) | 2015-05-07 | 2019-07-09 | Emerson Process Management Regulator Technologies, Inc. | Actuator assembly for a low flow-restriction shut-off valve with excess flow closure functionality |
| CN106122489B (en) * | 2015-05-07 | 2021-01-19 | 艾默生过程管理调节技术公司 | Actuator assembly for low flow restriction shutoff valve with spill containment |
| US10907746B2 (en) | 2015-05-07 | 2021-02-02 | Emerson Process Management Regulator Technologies, Inc. | Low flow-restriction shut-off valve with excess flow closure functionality |
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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 |