CN203463683U - Multi-tooth-surface soft sealing butterfly valve - Google Patents
Multi-tooth-surface soft sealing butterfly valve Download PDFInfo
- Publication number
- CN203463683U CN203463683U CN201320609951.XU CN201320609951U CN203463683U CN 203463683 U CN203463683 U CN 203463683U CN 201320609951 U CN201320609951 U CN 201320609951U CN 203463683 U CN203463683 U CN 203463683U
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- diaphragm seal
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Abstract
A multi-tooth-surface soft sealing butterfly valve comprises a valve body, wherein a channel is formed in the valve body, a valve plate used for sealing the channel is arranged on the channel and is fixed on a valve rod, the valve rod is mounted on the valve body, the valve body comprises a main valve body and an auxiliary valve body fixed on the end face of the main valve body, a tooth-shaped groove is formed in the surface where the main valve body is in contact with the auxiliary valve body, a sealing piece is mounted in the tooth-shaped groove, and an outer tooth structure matched with the tooth-shaped groove is arranged on the outer surface of the sealing piece. According to the multi-tooth-surface soft sealing butterfly valve, a certain number of circles of tooth surfaces with certain conicity are distributed on the surface where the main valve body is connected with the auxiliary valve body, the sealing piece can be firmly fixed through threaded connection to prevent leakage of the connecting position and guarantee the concentricity between the sealing piece and the valve plate, and then the sealing effect is improved; small gaps exist at sealing positions between the main valve body and the sealing piece and between the auxiliary valve body and the sealing piece, extrusion between sealing surfaces and the main valve body or the auxiliary valve body occurs when medium pressure is applied to the sealing surfaces in a high-pressure environment, and therefore mutual pressure between the sealing piece and the valve plate is increased, and the sealing effect is improved.
Description
Technical field
The utility model relates to a kind of butterfly valve, especially a kind of multiple tooth thin-skinned seal butterfly valve.
Background technique
Butterfly valve valve is the device that makes media fluid, gas, the flow of powder in pipe arrangement and equipment or stop, also controlling its flow.Have that open-close convenient is rapid, laborsaving, fluid resistance is little, can often operate; Simple in structure, volume is little, lightweight; Can transport mud, in pipeline opening, accumulate liquid minimum; Under low pressure, can realize good sealing, the advantage such as adjusting function is good.The indispensable fluid control devices of each department of national economy such as oil, chemical industry, power station, long-distance transport pipes, shipbuilding, nuclear industry, various cryogenic engineering, aerospace and offshore oil production.
The shortcomings such as present butterfly valve on the market exists range of working pressure little, and high pressure seal result is poor.Sealing due to soft sealing butterfly valve in structure is by butterfly plate cylindrical sealing surfaces, to move closer to and push valve seat to make valve seat produce resiliently deformable, the elastic force forming is as seal pressure, guarantee sealing, valve seat is constantly stressed in butterfly valve opening-closing process, by existing structural type valve seat fixing unreliable, sealability is poor.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, provides a kind of can range of working pressure large, and pressure is the better multiple tooth thin-skinned seal butterfly valve of high sealing effect more.
The utility model solves the technological scheme that its technical problem adopts: this multiple tooth thin-skinned seal butterfly valve, comprise valve body, on valve body, have passage, passage is provided with the valve plate of sealing channel, valve plate is fixed on valve rod, valve rod is arranged on valve body, valve body comprises valve body main body, is fixed on the valve body accessory body on valve body main body end face, surface of contact between valve body main body and valve body accessory body has serrate slot, diaphragm seal is installed in serrate slot, and the outer surface of diaphragm seal is provided with the outer toothing matching with serrate slot.Butterfly valve body adopts separate type, main body and accessory body two-part, consists of, and is convenient to like this valve body and produces and assemble.In main body and accessory body, diaphragm seal is installed, the outer surface of diaphragm seal adopts tooth-shape structure, and is arranged in default serrate slot, has increased like this area of contact between diaphragm seal and valve body, has the effect that strengthens sealing.
For further perfect, on the inwall between valve body main body and valve body accessory body, have groove, in groove, be provided with O type circle, wherein diaphragm seal stretches out in groove and wraps up O type circle in serrate slot, and valve plate is close to diaphragm seal outer end.Between valve body and valve plate, need good sealing, in the middle of diaphragm seal, add O type delineation type, by O type circle and diaphragm seal mating reaction, strengthen the sealing between valve plate and valve body.Diaphragm seal adopts the enhanced polytetrafluoroethylene of import, in wear resistance, corrosion resistance, sealing, all increase than existing material on working life, and in diaphragm seal interlayer, packs O type circle into, guarantees the circular degree of diaphragm seal sealing station.
Surface of contact between valve plate and vias inner walls is leaning structure, and wherein diaphragm seal is obliquely installed in serrate slot and is vertical with vias inner walls and coordinates.Sealing surface of valve plate adopts large radius spheric structure.There is the multiple tooth inclined-plane cooperatively interacting in valve body main body and accessory body, is threaded connection diaphragm seal to be to certain taper and to be fixed between valve body main body and accessory body.There is certain gap in main body and accessory body and diaphragm seal sealing position, and main body and accessory body and sealing surface of valve plate position exist the equidistant circular arc of certain distance, and when operating on low voltage, diaphragm seal seals position and is present in neutral position; When high-pressure work, diaphragm seal sealing position is subject to pressure medium effect, pushes with valve body, and diaphragm seal internal diameter dwindles, and the interaction force of valve plate and diaphragm seal increases, and sealing effect is better.
The effect that the utility model is useful is: the main body of the utility model valve body and accessory body junction surface distributing a fixing turn the flank of tooth and be certain tapering, be threaded connection and can fix firmly diaphragm seal, prevent the leakage of joint and the concentricity of assurance diaphragm seal and valve plate, improve sealing effect.There is less gap in the sealing station of the main body of valve body and accessory body and diaphragm seal, under hyperbaric environment, sealing surface is subject to pressure medium effect, push with main body or the accessory body of valve body, reduce diaphragm seal internal diameter, increase the mutual pressure of diaphragm seal and valve plate, strengthened sealing effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Description of reference numerals: valve body 1, valve body main body 1-1, valve body accessory body 1-2, serrate slot 1-3, groove 1-4, O type circle 3, valve plate 4, passage 5, valve rod 6.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to accompanying drawing: this multiple tooth thin-skinned seal butterfly valve, comprise valve body 1, on valve body 1, have passage 5, passage 5 is provided with the valve plate 4 of sealing channel 5, valve plate 4 is fixed on valve rod 6, valve rod 6 is arranged on valve body 1, wherein valve body 1 comprises valve body main body 1-1, is fixed on the valve body accessory body 1-2 on valve body main body 1-1 end face, surface of contact between valve body main body 1-1 and valve body accessory body 1-2 has serrate slot 1-3, diaphragm seal 2 is installed in serrate slot 1-3, and the outer surface of diaphragm seal 2 is provided with the outer toothing matching with serrate slot 1-3.Wherein on the inwall between valve body main body 1-1 and valve body accessory body 1-2, have groove 1-4, be provided with O type circle 3 in groove 1-4, wherein diaphragm seal 2 stretches out in groove 1-4 and wraps up O type circle 3 in serrate slot, and wherein valve plate 4 is close to diaphragm seal 2 outer ends.Surface of contact between valve plate 4 and passage 5 inwalls is leaning structure, and wherein diaphragm seal 2 is obliquely installed in serrate slot 1-3 and is vertical with passage 5 inwalls and coordinates.
Wherein multiple tooth thin-skinned seal butterfly valve comprises valve body main body 1-1, and valve body main body 1-1 mono-end face is provided with serrated slot, by screw and valve body accessory body 1-2, the enhanced polytetrafluoroethylene diaphragm seal 2 with O type circle 3 is fixed on valve body firmly.Valve plate 4 links together by taper pin and valve rod 6, coordinate and be installed in valve body 1, because the external diameter of valve plate 4 sealing surfaces is greater than enhanced polytetrafluoroethylene diaphragm seal 2 sealing surface internal diameters, when rotary valve rod 6, valve plate 4 contacts completely in enhanced polytetrafluoroethylene diaphragm seal 2, make mutually to push between the two, thereby reach sealing effect.When pressure medium is higher, enhanced polytetrafluoroethylene diaphragm seal 2 is subject to the effect of medium and valve body main body 1-1 or valve body accessory body 1-2 and pushes, and deforms, sealing surface internal diameter dwindles, increase with the interaction force of valve plate 4, and the styling of O type circle 3, sealing effect strengthens.
The utility model diaphragm seal is fixed in valve body by multiple tooth face, not only can guarantee that the surface of contact of valve body and diaphragm seal is not revealed, and can also accurately diaphragm seal be fixed on valve body.Enhanced polytetrafluoroethylene envelope O type circle, not only simple in structure, and by the styling of O type circle, can increase exponentially the sealing effect of enhanced polytetrafluoroethylene.
The multiple tooth thin-skinned seal butterfly valve of the utility model is through assembling test, the advantage such as have that wear-resisting property is good, fine corrosion resistance, sealability are superior, long service life, diaphragm seal dismounting and change are convenient.Be specially adapted to the industries such as metallurgy, light industry, electric power, petrochemical industry, highway asphalt construction.
Although the utility model illustrates and describes by reference to preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation in form and details.
Claims (3)
1. a multiple tooth thin-skinned seal butterfly valve, comprise valve body (1), on valve body (1), have passage (5), passage (5) is provided with the valve plate (4) of sealing channel (5), valve plate (4) is fixed on valve rod (6), valve rod (6) is arranged on valve body (1), it is characterized in that: described valve body (1) comprises valve body main body (1-1), be fixed on the valve body accessory body (1-2) on valve body main body (1-1) end face, surface of contact between valve body main body (1-1) and valve body accessory body (1-2) has serrate slot (1-3), diaphragm seal (2) is installed in serrate slot (1-3), the outer surface of diaphragm seal (2) is provided with the outer toothing matching with serrate slot (1-3).
2. multiple tooth thin-skinned seal butterfly valve according to claim 1, it is characterized in that: on the inwall between described valve body main body (1-1) and valve body accessory body (1-2), have groove (1-4), in groove (1-4), be provided with O type circle (3), described diaphragm seal (2) stretches out in groove (1-4) and wraps up O type circle (3) in serrate slot, and described valve plate (4) is close to diaphragm seal (2) outer end.
3. multiple tooth thin-skinned seal butterfly valve according to claim 1, it is characterized in that: the surface of contact between described valve plate (4) and passage (5) inwall is leaning structure, described diaphragm seal (2) is obliquely installed in serrate slot (1-3) and is vertical with passage (5) inwall and coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609951.XU CN203463683U (en) | 2013-09-30 | 2013-09-30 | Multi-tooth-surface soft sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609951.XU CN203463683U (en) | 2013-09-30 | 2013-09-30 | Multi-tooth-surface soft sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463683U true CN203463683U (en) | 2014-03-05 |
Family
ID=50176050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320609951.XU Expired - Fee Related CN203463683U (en) | 2013-09-30 | 2013-09-30 | Multi-tooth-surface soft sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518490A (en) * | 2018-05-10 | 2018-09-11 | 江南阀门有限公司 | A kind of low flow resistance butterfly valve of split type shock resistance |
-
2013
- 2013-09-30 CN CN201320609951.XU patent/CN203463683U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518490A (en) * | 2018-05-10 | 2018-09-11 | 江南阀门有限公司 | A kind of low flow resistance butterfly valve of split type shock resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20170930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |