CN2221133Y - Anticorrosive butterfly bamper with eccentric axis and double spheres - Google Patents
Anticorrosive butterfly bamper with eccentric axis and double spheres Download PDFInfo
- Publication number
- CN2221133Y CN2221133Y CN 95203084 CN95203084U CN2221133Y CN 2221133 Y CN2221133 Y CN 2221133Y CN 95203084 CN95203084 CN 95203084 CN 95203084 U CN95203084 U CN 95203084U CN 2221133 Y CN2221133 Y CN 2221133Y
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- CN
- China
- Prior art keywords
- valve
- valve seat
- plate
- seat
- valve plate
- 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.)
- Ceased
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Abstract
The utility model discloses an anticorrosive butterfly valve with an eccentric axle and two spherical surfaces, which relates to a butterfly valve used for controlling fluid flow quantity and comprises a valve seat, a valve body and a valve plate. The valve seat is a cylindrical shape whose two ends are provided with openings and is made from polytetrafluoroethylene material. The sealing surface of an inner wall is a spherical arc surface. The valve body comprises an upper valve body and a lower valve body in combination and is tightly fixed on the periphery of the valve seat by screws. The valve plate forms a circular shape and comprises a plate core and an anti-corrosive coating made from the polytetrafluorethylene. The valve plate is arranged in the valve seat by a valve plate axle with an axle sleeve and can rotate in the valve seat. The sealing surface on an outer edge is the spherical arc surface and is mutually matched with the inner wall of the valve seat. The sealing surface of the valve plate is inclined to the axle line side of the valve plate. The axle line of the valve plate offsets from the spherical center of the sealing surface of the valve seat. The utility model has good sealing performance, corrosion resistance and long service life.
Description
The utility model relates to a kind of anticorrosion butterfly valve that is used to control fluid flow in the fluid line that is installed in.
Butterfly valve is mounted in the vitals that is used to control fluid flow in the fluid line, at many industrial departments, particularly has a wide range of applications at chemical field.The anticorrosion butterfly valve that is used for corrosive fluid in the prior art has polytype, and the anticorrosion butterfly valve of two spheres promptly is a class wherein and mainly is made of valve seat, valve body and valve plate.Valve seat is the cylindrical shape of both ends open, is made by corrosion resistant polytetrafluoroethylmaterial material, and its inner wall sealing face is spherical cambered surface and works in coordination with the valve plate outer rim that its both sides have the axis hole that is used to install valve shaft.Valve body is combined by upper valve body and following valve body, is anchored on the periphery of valve seat relatively and works in coordination with valve seat by screw, has on the valve body and the corresponding axis hole of valve seat axis hole.Valve plate is circular, anticorrosive PTFE layer outside the plate core constitutes by plate core and cylinder-packing, be installed in the valve seat and can rotate therein by valve shaft and valve seat and valve body axis hole, its outer fringe seal face is spherical cambered surface and works in coordination with valve base inner wall ball arc sealing surface.Of the prior art pair of many employings of the anticorrosion butterfly valve of sphere center axis structure, its valve plate axis pass the central authorities of sealing surface of valve plate and the centre of sphere by sealing surface of seat.For the ease of valve shaft is installed, have on the technology the axial valve plate outer rim of valve plate is processed into platform, its result in fact local failure the sealing surface of valve plate, and valve shaft is directly exposed in the corrosive fluid, cause the too fast damage of valve shaft.In addition, owing to be sealed into the interference sealing between valve plate and the valve seat, the rebound elasticity of polytetrafluoroethylmaterial material is relatively poor in addition, sealing surface of seat will be squeezed and local convex epirelief and the final sealing surface that destroys butterfly valve occur.This shows that the sealability and the antiseptic property of the anticorrosion butterfly valve of two spheres of center axis structure are all not ideal enough, working life is also shorter.
The purpose of this utility model is the improvement in addition suitable to the structure of two anticorrosion butterfly valves of sphere in the prior art, goes to pot and avoids valve shaft to be subjected to the direct erosion of corrosive fluid to prevent the butterfly valve seal face.
To achieve these goals, the utility model makes sealing surface of valve plate be partial to valve plate axis one side, and makes the valve plate axis runout sealing surface of seat centre of sphere, thereby has constituted the two anticorrosion butterfly valves of sphere of a kind of eccentric shaft.Meanwhile, set up an anticorrosive PTFE axle sleeve at valve shaft and valve seat axis hole cooperation place.Because sealing surface of valve plate is partial to valve plate axis one side, the installation of valve shaft will can not destroy sealing surface of valve plate.Because the valve plate axis runout sealing surface of seat centre of sphere, valve plate goes to pot sealing surface unlikely extruding valve seat after opening.In addition, the teflon axle sleeve can avoid corrosive fluid directly to corrode valve shaft.Therefore, the two anticorrosion butterfly valves of sphere of eccentric shaft will have better seal performance and Corrosion Protection, and have long working life.Be described in further detail below in conjunction with the technical characteristics of specific embodiment the two anticorrosion butterfly valves of sphere of the utility model eccentric shaft.
Accompanying drawing 1,2 is respectively the positive view and the plan view of the two anticorrosion butterfly valves of sphere of eccentric shaft;
Accompanying drawing 3 is A-A sectional view.
With reference to the accompanying drawings 1,2,3, the two anticorrosion butterfly valves of sphere of the utility model eccentric shaft mainly are made of valve seat, valve body and valve plate.Valve seat 1 is the cylindrical shape of both ends open, is made by polytetrafluoroethylmaterial material, and its inner wall sealing face is spherical cambered surface and works in coordination with valve plate outer fringe seal face that its both sides have the axis hole that is used to install valve shaft.Valve body is made up of upper valve body 2 and following valve body 3, is anchored on the periphery of valve seat 1 relatively and works in coordination with valve seat 1 by screw 4, has and the corresponding axis hole of valve seat 1 axis hole on upper valve body 2 and the following valve body 3.Valve plate is circular, anticorrosive PTFE layer 6 outside plate core 5 constitutes by plate core 5 and cylinder-packing, be installed in the valve seat 1 and can rotate therein by last valve shaft 7 and lower valve plate axle 8 and valve seat and valve body axis hole, its outer fringe seal face 9 is worked in coordination for spherical cambered surface and with valve base inner wall ball arc sealing surface.Valve plate is the eccentric structure, and its outer fringe seal face 9 is valve plate axis 10 1 sides relatively, and valve plate axis 10 departs from the sealing surface of seat centre of sphere 11.Last valve shaft 7 and lower valve plate axle 8 have anticorrosive PTFE axle sleeve 12 and axle sleeve 13 respectively with valve seat 1 cooperation place, adopt flexible glue circle 14 and 15 sealings of flexible glue circle between last valve shaft 7 and lower valve plate axle 8 and the valve seat 1 respectively.
The utility model structure is ingenious, and sealing and anti-corrosive properties are all relatively good, and therefore long service life is particularly suitable for the anticorrosion butterfly valve as the control fluid flow.
Claims (1)
1, a kind of two anticorrosion butterfly valves of sphere of eccentric shaft that are used to control fluid flow in the fluid line that are installed in, by valve seat, valve body and valve plate constitute, valve seat is the cylindrical shape of both ends open, make by polytetrafluoroethylmaterial material, its inner wall sealing face is spherical cambered surface and works in coordination with the valve plate outer rim that its both sides have the axis hole that is used to install valve shaft; Valve body is made up of upper valve body and following valve body, is anchored on the periphery of valve seat relatively and works in coordination with valve seat by screw, has on the valve body and the corresponding axis hole of valve seat axis hole; Valve plate is circular, anticorrosive PTFE layer outside the plate core constitutes by plate core and cylinder-packing, be installed in the valve seat and can rotate therein by valve shaft and valve seat and valve body axis hole, its outer fringe seal face is spherical cambered surface and works in coordination with valve base inner wall ball arc sealing surface, of the present utility modelly be characterised in that described sealing surface of valve plate is partial to valve plate axis one side, the valve plate axis runout sealing surface of seat centre of sphere, valve shaft and valve seat axis hole cooperation place have the teflon axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95203084 CN2221133Y (en) | 1995-02-24 | 1995-02-24 | Anticorrosive butterfly bamper with eccentric axis and double spheres |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95203084 CN2221133Y (en) | 1995-02-24 | 1995-02-24 | Anticorrosive butterfly bamper with eccentric axis and double spheres |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2221133Y true CN2221133Y (en) | 1996-02-28 |
Family
ID=33856045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95203084 Ceased CN2221133Y (en) | 1995-02-24 | 1995-02-24 | Anticorrosive butterfly bamper with eccentric axis and double spheres |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2221133Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309977C (en) * | 2001-07-04 | 2007-04-11 | 奥村工程株式会社 | Butterfly valve |
-
1995
- 1995-02-24 CN CN 95203084 patent/CN2221133Y/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309977C (en) * | 2001-07-04 | 2007-04-11 | 奥村工程株式会社 | Butterfly 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 | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20000908 Decision number of declaring invalidation: 2559 |