CN202674335U - Through hole rubber-lined butterfly valve - Google Patents
Through hole rubber-lined butterfly valve Download PDFInfo
- Publication number
- CN202674335U CN202674335U CN 201220309102 CN201220309102U CN202674335U CN 202674335 U CN202674335 U CN 202674335U CN 201220309102 CN201220309102 CN 201220309102 CN 201220309102 U CN201220309102 U CN 201220309102U CN 202674335 U CN202674335 U CN 202674335U
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- China
- Prior art keywords
- valve
- valve plate
- hole
- plate
- butterfly valve
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- Expired - Fee Related
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Abstract
The utility model discloses a through hole rubber-lined butterfly valve, which comprises a valve body, a valve shaft and a valve plate, wherein a through hole which penetrates through an upper end and a lower end of the valve plate is formed in the center of the valve plate; the cross section of the through hole is square or oblate; and the outer surface of the valve plate is provided with a rubber layer. According to the butterfly valve, the valve plate and the valve shaft of the butterfly valve are connected by using a shaft hole; transmission connection of the valve plate and the valve shaft is realized by arranging a square or oblate shaft hole; a connecting pin can be effectively removed; leakage and corrosion phenomena produced at the connecting pin are avoided; meanwhile, the valve plate is fully isolated from fluid by covering rubber on the entire valve plate, thereby avoiding corrosion due to contact of the valve plate and fluid; and the sealing effect of the valve plate and the valve body can also be improved by using the rubber on the valve plate, so that the product performance is improved.
Description
Technical field
The utility model relates to a kind of butterfly valve, specifically relates to a kind of through hole butterfly valve.
Background technique
Butterfly valve is again Flap valve, is a kind of modulating valve simple in structure, also can be used for the switch control of low pressure pipeline medium simultaneously.Butterfly valve is applicable to carry on the pipeline of various corrosivity, non-corrosive fluids medium in the engineering systems such as producer, coal gas, rock gas, liquefied petroleum gas (LPG), town gas, cold and hot air, chemical industry smelting and generation environment-friendly, is used for regulating and blocking flowing of medium.
Butterfly valve comprises wafer type butterfly valve and flange-type butterfly valve, and wherein, the butterfly plate of wafer type butterfly valve is installed on the diametric(al) of pipeline.In the butterfly valve body cylindrical channel, the disc butterfly plate rotates around axis, and angle of swing is that when rotating to 90 °, valve then is in full-gear between 0 °-90 °.
Figure 1 shows that the wafer type butterfly valve structure schematic representation of prior art.As shown in Figure 1, existing butterfly valve comprises valve body 5, Handle of butterfly valve 1, valve shaft 8 and valve plate 7, valve shaft 8 runs through whole valve body 5 and extends outside the valve body from the valve body top, valve plate 7 rotatably is arranged at valve body 5 inside by valve shaft 8, and being arranged at valve inner valve base sealing valve seat 6 can further increase sealing intensity between valve plate and valve body.Handle of butterfly valve l is arranged on valve body 5 upper ends and can be in transmission connection with valve shaft 8.Upper flange connecting plate 3 is connected with valve body 5 by side flange hole 4, the disk that periphery is provided with locating tooth is fixedly installed on the upper flange 3 and allows valve shaft to run through from its center, be provided with selectively the positioning rod with described locating tooth interference in described Handle of butterfly valve 1 bottom, described positioning rod is scissor be hinged on the Handle of butterfly valve bottom and the articulating point rear portion supported spring is set to keep the chimeric status of positioning rod and locating tooth between the two, realize that valve plate is located at any angle.
The butterfly valve that uses now is mainly axis the pin butterfly valve, it is to link together by taper pin that its plate axle of pin butterfly valve is arranged, such way certainly will stay on the surface of plate a certain size destruction face, for medium and the corrosion of himself provide condition, leak in producing behind the heavy corrosion can't the driving plate rotation with axle phenomenon, valve can't be used, reduced the working life of valve.
The simultaneously sealing between valve plate and valve body relies on soft valve seat construction, and this is just so that the valve body processed complex, and cost raises.
Summary of the invention
Technical problem to be solved in the utility model is the shortcoming that overcomes prior art, provides a kind of corrosion resistance strong butterfly valve structure.
The technological scheme that the utility model adopts is:
A kind of through hole butterfly valve comprises valve body, valve shaft and valve plate, and described valve plate center is formed with the through hole that connects the valve plate upper and lower end, and described through hole cross section is square or oblate, is provided with one deck rubber at described valve plate outer surface.
Described through hole comprises up and down two-part, and the cross section of upper partial through holes is square or oblate, and lower half portion through hole cross section is circular.
Described rubber layer thickness is 2-4mm.
Butterfly valve of the present utility model, its valve plate and valve shaft adopt the axis hole Placement, by being set, square or oblate axis hole realizes that it is in transmission connection, can effectively remove the use of connecting pin, leakage and the corrosion phenomenon of avoiding the connecting pin place to produce occur, and adopt in the valve plate entire body simultaneously and cover the glue setting, valve plate and fluid are isolated fully, avoid valve plate and fluid contact and corrosion, and utilize rubber on the valve plate also can improve the sealing effect of valve plate and valve body, enhance product performance.
Description of drawings
Figure 1 shows that the wafer type butterfly valve structure schematic representation of prior art;
Figure 2 shows that valve board structure side view of the present utility model;
Figure 3 shows that valve board structure sectional view of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Shown in Fig. 2,3, butterfly valve of the present utility model comprises valve body, valve shaft and valve plate, and described valve plate 10 centers are formed with the through hole 11 that connects the valve plate upper and lower end, described through hole cross section is square or oblate, is provided with one deck rubber 12 at described valve plate outer surface.
Preferably, described through hole comprises up and down two-part, and the cross section of upper partial through holes 11-1 is square or oblate, and lower half portion through hole 11-2 cross section is circular.Simultaneously, the valve shaft cross section corresponding with described upper half part through hole is match square or oblate, utilize valve shaft and cooperating of through hole can realize being in transmission connection of valve plate and valve shaft, when the valve shaft middle part can be in transmission connection with valve plate, its underpart and valve body are rotatable fixing, the upper end portion is fixedly connected with manipulation component, can the operation such as open or close to valve plate by manipulation component.
Be formed with one deck rubber 12 at described valve plate outer surface, but the sealing effect between the corrosion resistance of Effective Raise valve plate and valve plate and the valve body, and preferably, described rubber layer is at 2-4mm.Rubber layer is arranged on the valve plate outer surface, can reduces the use of soft valve seat, reduce cost.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. through hole butterfly valve, comprise valve body, valve shaft and valve plate, it is characterized in that: described valve plate center is formed with the through hole that connects the valve plate upper and lower end, and described through hole cross section is square or oblate, is provided with one deck rubber at described valve plate outer surface.
2. butterfly valve as claimed in claim 1 is characterized in that: described through hole comprises up and down two-part, and the cross section of upper partial through holes is square or oblate, and lower half portion through hole cross section be circle.
3. butterfly valve as claimed in claim 1 or 2, it is characterized in that: described rubber layer thickness is 2-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309102 CN202674335U (en) | 2012-06-28 | 2012-06-28 | Through hole rubber-lined butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309102 CN202674335U (en) | 2012-06-28 | 2012-06-28 | Through hole rubber-lined butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674335U true CN202674335U (en) | 2013-01-16 |
Family
ID=47495241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220309102 Expired - Fee Related CN202674335U (en) | 2012-06-28 | 2012-06-28 | Through hole rubber-lined butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438231A (en) * | 2013-07-23 | 2013-12-11 | 夏许超 | Method for processing butterfly plate device of butterfly valve body |
-
2012
- 2012-06-28 CN CN 201220309102 patent/CN202674335U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438231A (en) * | 2013-07-23 | 2013-12-11 | 夏许超 | Method for processing butterfly plate device of butterfly valve body |
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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 |
Granted publication date: 20130116 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |