CN202768880U - Hard back plastic butterfly valve - Google Patents
Hard back plastic butterfly valve Download PDFInfo
- Publication number
- CN202768880U CN202768880U CN 201220447371 CN201220447371U CN202768880U CN 202768880 U CN202768880 U CN 202768880U CN 201220447371 CN201220447371 CN 201220447371 CN 201220447371 U CN201220447371 U CN 201220447371U CN 202768880 U CN202768880 U CN 202768880U
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- CN
- China
- Prior art keywords
- valve
- hard
- valve seat
- hard backrest
- hard back
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a hard back plastic butterfly valve which comprises a valve body, a valve plate, a valve seat, a valve rod and an actuator. The valve seat comprises a circle-shaped hard back made of hard materials. Rubber is arranged on the inner surface of the hard back in a matched mode. Valve holes are arranged in corresponding positions of the upper end and the lower end of the hard back. The valve seat is assembled inside the valve body and is closely matched with the valve body. The valve plate is installed inside the valve seat in a matched mode. An upper first shaft hole and a lower first shaft hole of the valve body, the two valve holes of the valve seat and a second shaft hole of the valve plate are concentric. The valve rod penetrates through the first shaft holes, the valve holes and the second shaft hole, and is fixedly connected with the valve plate. The actuator is fixed at the top end of the valve rod. The hard back plastic butterfly valve has the advantages that the hard back of the valve seat and the rubber are combined into a whole, and therefore the hard back plastic butterfly valve in a pipeline system is enabled to be positioned accurately in the process of switching and be long in service life. The occurrence of the leakage of a valve caused by wriggling displacement of the valve seat when the valve plate and the valve seat are sealed in an interference fit mode is avoided. The hard back has certain hardness, and therefore the hard back can bear a part of pressure. The caliber of the plastic butterfly valve can be manufactured to be larger.
Description
Technical field
The utility model belongs to the pipeline valve field, especially relates to a kind of hard backrest plastic cement butterfly valve.
Background technique
Along with the application of plastic cement butterfly valve in industrial and agricultural production is more and more extensive, more and more higher to its quality requirement, the specification that needs is also increasing, soft backrest plastic cement butterfly valve in existing technology, its valve-seat diameter is valve maximum flow diameter, and valve seat is generally whole rubber and consists of, exist quality soft, bad location during upper valve base, and the difficult grasp of processing fit dimension easily produce over-stress; Also exist soft backrest plastic cement butterfly valve and in small-bore pipeline system, still can reach requirement, but when heavy caliber, because it is not tight that valve seat and valve body cooperate, so that valve plate is when sealing with the valve seat interference, the displacement of valve seat wriggling causes the valve seepage, shorten the working life of valve, and damage easily valve seat during dismounting.
Summary of the invention
Problem to be solved in the utility model provides a kind of valve plate and valve seat accurate positioning, long service life, a kind of hard backrest plastic cement butterfly valve that intensity is high, especially is suitable as heavy caliber plastic cement butterfly valve and uses.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of hard backrest plastic cement butterfly valve comprises valve body, valve plate, valve seat, valve rod, actuator; Described valve seat comprises the circular hard backrest that hard material is made, and described hard backrest internal surface cooperation is provided with rubber, and described hard backrest is equipped with a valve opening in corresponding position, two ends up and down; Described valve seat is assembled in the valve body and with it and closely cooperates, and described valve plate cooperation is installed in the valve seat; Two valve openings of upper and lower first axis hole of described valve body and valve seat and the second axis hole of valve plate are concentric, described valve rod is applied in described the first axis hole, valve opening, the second axis hole and with described valve plate and is fixedly connected with, and described valve rod and described valve body and valve seat are flexibly connected; Described actuator is fixed on the top of described valve rod and is located on the surface on top of described valve body.
Further, described hard backrest and described rubber are for integrated by sulfuration.
Further, described hard backrest is any one in the hard backrest of aluminium sheet, the hard backrest of resin, the hard backrest of glass fibre reinforced plastics, the hard backrest of nylon.
Further, described rubber is hardness rubber.
Further, described valve opening forms annular boss at described rubber outer surface, and it is tightr to make valve seat and valve plate cooperate.
Advantage and the good effect that the utlity model has are: owing to adopt technique scheme, because hard backrest and the rubber of valve seat are as a whole, so that the utility model accurate positioning during switch, long service life on pipe-line system, when avoiding valve plate and valve seat interference sealing, the displacement of valve seat wriggling causes the valve seepage; Simultaneously hard backrest has certain intensity, can bear a part of pressure, so that the pressure that valve body bears is larger; It is larger that the bore of plastic cement butterfly valve can be done, and strengthened simultaneously the stability of plastic cement butterfly valve on pipe-line system, prolonged working life; Have the advantages such as operation simple in structure, easy for installation, easy, working efficiency height.
Description of drawings
Fig. 1 is overall structure schematic representation of the present utility model;
Fig. 2 is the main TV structure schematic representation of valve seat of the present utility model;
Fig. 3 is overlooking of valve seat of the present utility model or looks up structural representation.
Among the figure:
1, valve body 2, valve plate 3, valve seat
4, valve rod 5, actuator 6, hard backrest
7, rubber 8, valve opening 9, annular boss
Embodiment
As shown in Figure 1, 2, 3, a kind of hard backrest plastic cement butterfly valve of the utility model comprises valve body 1, valve plate 2, valve seat 3, valve rod 4, actuator 5; Described valve seat 3 comprises the circular hard backrest 6 that hard material is made, and described hard backrest 6 internal surfaces cooperation is provided with rubber 7, and described hard backrest is equipped with a valve opening 8 in corresponding position, two ends about in the of 6; Described valve seat 3 is assembled in the valve body 1 and with it and closely cooperates, and described valve plate 2 cooperations are installed in the valve seat 3; Two valve openings 8 of upper and lower first axis hole of described valve body 1 and valve seat 3 and the second axis hole of valve plate 2 are concentric, described valve rod 4 is applied in described the first axis hole, valve opening 8, the second axis hole and with described valve plate 2 and is fixedly connected with, and described valve rod 4 is flexibly connected with described valve body 1 and valve seat 3; Described actuator 5 is fixed on the top of described valve rod 4 and is located on the surface on top of described valve body 1.
Preferably, described hard backrest 6 is integrated for passing through sulfuration with described rubber 7.
Preferably, described hard backrest 6 is any one in the hard backrest of aluminium sheet, the hard backrest of resin, the hard backrest of glass fibre reinforced plastics, the hard backrest of nylon.
Preferably, described rubber 7 is hardness rubber.
Preferably, described valve opening 8 forms annular boss 9 at described rubber 7 outer surfaces, makes valve seat 3 and valve plate 2 cooperate tightr.
The working procedure of this example: after the plastic cement butterfly valve assembled, can realize by valve rod 4 rotation of valve plate 2 by rotation driving mechanism 5, thereby realize the opening and closing of plastic cement butterfly valve, not only convenient, easily operation, and long service life of the utility model, easy to leak not.
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (5)
1. a hard backrest plastic cement butterfly valve is characterized in that: comprise valve body, valve plate, valve seat, valve rod, actuator; Described valve seat comprises the circular hard backrest that hard material is made, and described hard backrest internal surface cooperation is provided with rubber, and described hard backrest is equipped with a valve opening in corresponding position, two ends up and down; Described valve seat is assembled in the valve body and with it and closely cooperates, and described valve plate cooperation is installed in the valve seat; Two valve openings of upper and lower first axis hole of described valve body and valve seat and the second axis hole of valve plate are concentric, described valve rod is applied in described the first axis hole, valve opening, the second axis hole and with described valve plate and is fixedly connected with, and described valve rod and described valve body and valve seat are flexibly connected; Described actuator is fixed on the top of described valve rod and is located on the surface on top of described valve body.
2. a kind of hard backrest plastic cement butterfly valve according to claim 1 is characterized in that: described hard backrest and described rubber are for integrated by sulfuration.
3. each described a kind of hard backrest plastic cement butterfly valve according to claim 1 and 2, it is characterized in that: described hard backrest is any one in the hard backrest of aluminium sheet, the hard backrest of resin, the hard backrest of glass fibre reinforced plastics, the hard backrest of nylon.
4. each described a kind of hard backrest plastic cement butterfly valve according to claim 1 and 2, it is characterized in that: described rubber is hardness rubber.
5. a kind of hard backrest plastic cement butterfly valve according to claim 1, it is characterized in that: described valve opening forms annular boss at described rubber outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447371 CN202768880U (en) | 2012-09-04 | 2012-09-04 | Hard back plastic butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447371 CN202768880U (en) | 2012-09-04 | 2012-09-04 | Hard back plastic butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768880U true CN202768880U (en) | 2013-03-06 |
Family
ID=47775455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220447371 Expired - Fee Related CN202768880U (en) | 2012-09-04 | 2012-09-04 | Hard back plastic butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768880U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363132A (en) * | 2013-07-23 | 2013-10-23 | 夏许超 | Processing method for synthetic rubber gum cover of butterfly valve |
| CN107339444A (en) * | 2017-02-10 | 2017-11-10 | 上海冠龙阀门自控有限公司 | It is a kind of with broadside backrest type rubber valve seat sealing structure to pressing from both sides butterfly valve |
-
2012
- 2012-09-04 CN CN 201220447371 patent/CN202768880U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363132A (en) * | 2013-07-23 | 2013-10-23 | 夏许超 | Processing method for synthetic rubber gum cover of butterfly valve |
| CN107339444A (en) * | 2017-02-10 | 2017-11-10 | 上海冠龙阀门自控有限公司 | It is a kind of with broadside backrest type rubber valve seat sealing structure to pressing from both sides butterfly valve |
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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: 20130306 Termination date: 20140904 |
|
| EXPY | Termination of patent right or utility model |