CN2281446Y - High performance sealing butterfly gate - Google Patents
High performance sealing butterfly gate Download PDFInfo
- Publication number
- CN2281446Y CN2281446Y CN 96216984 CN96216984U CN2281446Y CN 2281446 Y CN2281446 Y CN 2281446Y CN 96216984 CN96216984 CN 96216984 CN 96216984 U CN96216984 U CN 96216984U CN 2281446 Y CN2281446 Y CN 2281446Y
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- CN
- China
- Prior art keywords
- valve
- valve plate
- plate
- sealing
- sealing seat
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- Expired - Fee Related
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Abstract
The utility model relates to a high performance sealing butterfly gate, which belongs to a control device of a liquid pipeline. The utility model is especially suitable for a pipeline of toxic liquid and inflammable liquid. The utility model comprises a gate body, a gate plate and a rotating shaft of the gate plate. Eccentric distances are between the center of the rotating shaft of the gate plate and the central shaft line of the gate body and the center of the rotating shaft of the gate plate and the central surface of the gate plate. An elastic sealing seat mechanism is arranged between the gate body and the gate plate. The side of the gate plate is an inverted conical surface which is matched with the inner side surface of the elastic sealing seat mechanism in sealing contact. The utility model has the advantages of good sealing performance, high work pressure, big circulation capability and convenient operation.
Description
The utility model belongs to the control gear of fluid pipeline, is suitable for poisonous, flammable fluid especially, can be widely used in industries such as metallurgy, oil, chemical industry.
Existing reed valve, because valve seat, valve plate self will bear the pressure of fluid, and the intensity of valve plate rotatingshaft is limited, so that working pressure lower (maximum 0.1MPa); And the limited opening angle of valve plate, maximum are no more than 70 °, have limited the flow of butterfly valve, and promptly negotiability is less.In addition, valve plate and valve interior wall surface of contact are the cylndrical surface, and the two is hard contact, because the machining accuracy of surface of contact can not be absolute accurate, the sealing of butterfly valve is poor like this.
The purpose of this utility model is in order to increase negotiability, to improve the stress of valve plate rotatingshaft and the sealing contact surface of valve plate and valve body, and a kind of high-performance seal butterfly valve is provided.
The purpose of this utility model is to be finished by following technological scheme: comprise valve body, valve plate, valve plate rotatingshaft, there is the radial disbalance distance at described valve plate rotatingshaft center from the central axis of valve body, from the valve plate central plane axial throw of eccentric is arranged also, be provided with the elastic packing seat mechanism between valve body and valve plate, the avris of this valve plate is the rounding conical surface and described elastic packing seat mechanism inner side surface sealing contact matching.
Above-mentioned radial disbalance distance, code name L1 is at 0.01～0.03 φ d;
Above-mentioned axial throw of eccentric, code name L is at 0.12～0.14 φ d;
Above-mentioned φ d is a body cavity diameter code name.
Described elastic packing seat mechanism can be divided into soft seal seat mechanism and hard sealing seat mechanism.
The soft seal seat mechanism can for: the sealing seat that a gentle elastic material (as teflon) is made is located between valve plate and the valve body, the sealing seat is an annular, its inwall be the rounding conical surface and with valve plate flank side surface sealing contact matching, the fluted circle of its outer wall also accompanies soft elastic ring ring and cooperates with valve seal, below described sealing seat, be provided with annular pressing plate, some pits that are uniformly distributed along the circumference on this pressing plate are established pressure spring and are contacted sealing seat in the pit.
Above-mentioned gentle elastic material can be teflon; Above-mentioned gentle elastic ring ring can be rubber material, and section is preferable with circle.More than 10 of above-mentioned pit and pressure spring number.
Hard sealing seat mechanism is: one makes ring sealing base by Steel Spring Plate, and its inner side surface is that the rounding conical surface cooperates with valve plate, truncation surface one-tenth " several " shape of seal valve, and its outer edge is fixedly clamped by pressing plate and valve body.
The utility model has following advantage: the two eccentric rotational structure that 1, adopts the valve plate rotatingshaft, when valve plate is opened, the countercurrent direction lifting surface area is little, the downbeam lifting surface area is big, reduced the torque (see figure 3) curve b that pressure reduction forms on valve plate, valve plate is opened easily, and open angle can reach 90 °, has increased negotiability.2, the surface of contact of valve plate and sealing seat adopts the rounding cone match, its good manufacturability, and sealability is good, even also can reach sealing under elevated pressures.In addition, when outside the valve plate during in full close position, fluid is delivered to sealing seat to the part that valve plate produces active force by valve plate, like this, has reduced the load of bearing on rotatingshaft and the bearing, has improved the working pressure of system.3, the lateral movement of sealing seat, or regulate (soft seal mechanism) by pressure spring, or regulate (hard sealing mechanism) by self elasticity.When valve plate is closed, can guarantee closely cooperating between sealing seat and valve plate, guaranteed the sealability of valve.When valve plate was opened, because the regulating action of spring, sealing seat can produce slight moving in side direction under the breakdown power effect of valve plate, therefore, makes the matching gap between sealing seat and valve plate increase the stuck phenomenon when having avoided the valve plate breakdown.
The utility model has following accompanying drawing
Fig. 1 is the utility model embodiment 1 a structural drawing
Fig. 2 is the utility model embodiment 2 a hard sealing seat mechanism cross-section structure
Fig. 3 is the torque curve contrast figure of the utility model valve plate
Further describe embodiment 1 below in conjunction with accompanying drawing 1: the upper shed of valve body 1 is the fluid approach axis, valve body central authorities are provided with valve plate rotatingshaft 7, the valve plate rotatingshaft connects valve plate 67 times, it is 0.02 φ d apart from L1 that there is radial disbalance at the center of this valve plate rotatingshaft 7 from the central axis of valve body, from the valve plate central plane axial throw of eccentric L being arranged also is 0.13 φ d, and φ d is the body cavity diameter.The avris of valve plate is the inner wall sealing contact matching of the sealing seat 2 in the rounding conical surface and the soft seal seat mechanism.Sealing seat 2 is an annular, is made by teflon, and its inwall is the rounding conical surface, and the fluted circle of its outer wall also accompanies gentle elastic ring ring 3 and cooperates with valve seal.Should be gentle elastic ring ring 3 make by rubber material, its section be a circle.Be provided with corresponding annular pressing plate 5 below sealing seat 2, correspondence is established pressure spring 4 in these some pits that are uniformly distributed along the circumference above pressing plate, pit, and this pressure spring 4 contacts sealing seat 2.
2 embodiment 2 is described in conjunction with the accompanying drawings more below: valve body, valve plate, valve plate rotatingshaft, and it is identical with embodiment 1 to interconnect structure, its elastic packing seat is a hard sealing seat mechanism: make ring sealing base 8 by Steel Spring Plate, the inner side surface of sealing seat 8 is that the rounding conical surface is that contact seal cooperates with the valve plate outside rounding conical surface.The truncation surface of sealing seat 8 becomes " several " shape, and its outer edge is fixedly clamped by pressing plate and valve body.
Fig. 3 is the torque curve contrast figure of valve plate, and dotted line (A) does not have the valve plate torque curve of throw of eccentric for the valve plate rotatingshaft; Valve plate torque curve when solid line (B) is two throw of eccentric for the valve plate rotatingshaft.
Claims (5)
1, a kind of high-performance seal butterfly valve, comprise valve body (1), valve plate (6), valve plate rotatingshaft (7), it is characterized in that: there is the radial disbalance distance at described valve plate rotatingshaft (7) center from the central axis of valve body, from the valve plate central plane axial throw of eccentric is arranged, be provided with the elastic packing seat mechanism between valve body and valve plate, the flank side surface of this valve plate is the rounding conical surface and described elastic packing seat mechanism sealing contact matching.
2, high-performance seal butterfly valve as claimed in claim 1 is characterized in that: above-mentioned radial disbalance is 0.01～0.0 3 body cavity diameter apart from L1, and above-mentioned axial throw of eccentric L is 0.12～0.14 body cavity diameter.
3, high-performance seal butterfly valve as claimed in claim 1 or 2, it is characterized in that: described elastic packing seat mechanism is the soft seal seat mechanism: the sealing seat that a gentle elastic material is made is located between valve plate and the valve body, the sealing seat is an annular, its inwall be the rounding conical surface and with valve plate flank side surface sealing contact matching, the fluted circle of its outer wall also accompanies gentle elastic ring ring and cooperates with valve seal, below described sealing seat, be provided with annular pressing plate, at these some pits that are uniformly distributed along the circumference above pressing plate, correspondence is established pressure spring and is contacted sealing seat in the pit.
4, high-performance seal butterfly valve as claimed in claim 3, it is characterized in that: above-mentioned seal ring is made by polytetrafluoroethylmaterial material, above-mentioned gentle elastic ring ring is that rubber material is made, and its section is circular, and above-mentioned pit and pressure spring number are more than 10.
5, high-performance seal butterfly valve as claimed in claim 1 or 2, it is characterized in that: above-mentioned elastic packing seat mechanism is a hard sealing seat mechanism: one makes ring sealing base by Steel Spring Plate, its inner side surface is that the rounding conical surface cooperates with valve plate, the truncation surface of sealing seat becomes " several " shape, and its outer edge is fixedly clamped by pressing plate and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96216984 CN2281446Y (en) | 1996-07-18 | 1996-07-18 | High performance sealing butterfly gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96216984 CN2281446Y (en) | 1996-07-18 | 1996-07-18 | High performance sealing butterfly gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2281446Y true CN2281446Y (en) | 1998-05-13 |
Family
ID=33898292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96216984 Expired - Fee Related CN2281446Y (en) | 1996-07-18 | 1996-07-18 | High performance sealing butterfly gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2281446Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105849446A (en) * | 2013-12-25 | 2016-08-10 | 爱三工业株式会社 | Double eccentric valve |
-
1996
- 1996-07-18 CN CN 96216984 patent/CN2281446Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105849446A (en) * | 2013-12-25 | 2016-08-10 | 爱三工业株式会社 | Double eccentric valve |
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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 |