CN1074741A - The wafer type butterfly valve - Google Patents
The wafer type butterfly valve Download PDFInfo
- Publication number
- CN1074741A CN1074741A CN 92114464 CN92114464A CN1074741A CN 1074741 A CN1074741 A CN 1074741A CN 92114464 CN92114464 CN 92114464 CN 92114464 A CN92114464 A CN 92114464A CN 1074741 A CN1074741 A CN 1074741A
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- CN
- China
- Prior art keywords
- butterfly
- butterfly plate
- valve
- wafer type
- axle sleeve
- 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.)
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Abstract
The present invention relates to a kind of wafer type butterfly valve, comprise valve body 1 down, butterfly plate, upper valve body 7, valve shaft 10, positioning disk 11 and spanner 12.It is characterized in that the axle sleeve 5a of butterfly plate and convex lens seal 5b have certain inclination angle, there is the adjustment screw lower end of following valve body 1, and the upper end axle sleeve of butterfly plate and liner 4 are the tapering sealing, and lower end axle sleeve and liner 4 are the sealing of concave-convex shape round wire.This butterfly valve is than existing wafer type butterfly valve, and it is in light weight to have a butterfly plate, good seal performance, open and close stressed evenly, advantages such as long service life.
Description
The present invention relates to a kind of wafer type butterfly valve.
The wafer type butterfly valve is made of upper and lower valve body, valve shaft, butterfly plate, positioning disk and wrench.Valve shaft vertically is interspersed in butterfly plate, as shown in Figure 1.During use, rotate wrench, wrench drives the valve shaft rotation, and butterfly plate rotates thereupon, realizes closing and opening valve.Positioning disk is used for control valve body cavity space size, thus control flow rate.Because vertical connection of convex lens sealing surface (as shown in Figure 1) of the butterfly plate of this butterfly valve and axle sleeve with the butterfly plate of valve shaft grafting, this just makes that the convex lens of butterfly plate is thicker, cause butterfly plate to open and close the sealed friction surface unbalance stress, the resistance of start is big, and the liner processing difficulties of butterfly plate and butterfly valve produces four sealing dead angle A among Fig. 1, during use inevitably on the sealing surface of butterfly plate and liner, dead angle A very easily weares and teares, thereby makes the butterfly plate seepage.The butterfly plate upper and lower end of this butterfly valve adopts O type ring mechanical sealing, hangs tight the compressing sealing through screw, and after repeatedly opening and closing, O type circle is wearing and tearing easily under the effect of the rotating force of valve shaft, cause seepage.
The object of the invention is to change the butterfly plate structure of wafer type butterfly valve, to overcome the above-mentioned defective that existing wafer type butterfly valve exists.
Technical solution of the present invention is: the axle sleeve of existing butterfly plate and the symmetry of convex lens seal are connected the connection that changes over certain inclination angle, and promptly the center line of axle sleeve and convex lens sealing surface form several angle.The butterfly plate of this structure can make the convex lens body attenuation of butterfly plate, reduces seal friction, and processing ease, resistance are little, in light weight.Outstanding feature is that the convex lens seal of butterfly plate and the sealing of liner form the complete uniform garden of seal friction area shape linear sealing, the dead angle can not appear sealing, realize good sealing effect, improve the working life of butterfly valve, and make butterfly plate and liner easy processing.
Detailed technology content of the present invention is given to further specify by embodiment and accompanying drawing thereof.
Fig. 2 is the overall structure schematic representation of embodiment's wafer type butterfly valve.
Fig. 3 is valve shaft and a butterfly plate linkage structure schematic representation among Fig. 2.
This wafer type butterfly valve is by valve body 1, butterfly plate 5, upper valve body 7, valve shaft 10, positioning disk 11 and wrench 12 are formed down.The sealing surface of the convex lens body 5b of the axle sleeve 5a of butterfly plate and butterfly plate has certain inclination angle, and the butterfly valve size of neglecting greatly at inclination angle is set, and present embodiment is 25 °.Valve shaft 10 is through at axle sleeve 5a, valve shaft is connected with wrench 12, and upper valve body 7 and following valve body 1 are fastening by screw 9.The quality of fit of valve seat neck bush 4 and butterfly plate both ends of the surface about in the of 5 is regulated by location handful 8 and screw 9.The lower end of following valve body 1 has screw, adjusts screw 2 and reaches down in the valve body by screw, when the screw precession, by lining 3 roof pressure liners 4.When mild wear appearred in butterfly valve, adjusting screw 2 was to adjust the sealing state of butterfly plate and liner.Avoid the dismounting of stopping, influence proper functioning.The upper end axle sleeve of butterfly plate 5 and liner 4 are the tapering sealing, and the lower end axle sleeve of butterfly plate 5 and liner 4 are the shape linear sealing of concavo-convex garden, make the sealing keying of butterfly valve stressed evenly, good seal performance.6 is lining among Fig. 2.
The butterfly plate of this butterfly valve is a metal, wraps up in engineering plastics or rubber such as teflon outward, and liner also is corresponding material, butterfly plate and valve body form soft seal, it is stressed evenly that this butterfly valve has keying, and good seal performance is applicable to industries such as chemical industry, oil, iron and steel, smelting, pharmacy, food.
Claims (5)
1, a kind of wafer type butterfly valve comprises valve body 1, butterfly plate 5, upper valve body 7, valve shaft 10, positioning disk 11 and spanner 12 down, it is characterized in that the convex lens seal 5b of butterfly plate axle sleeve 5a and butterfly plate has certain inclination angle.
2, wafer type butterfly valve according to claim 1 is characterized in that the lower end of valve body 1 has screw down, adjusts screw 2 and reaches down in the valve body by screw, and when the screw precession, screw 2 is by the liner 4 of lining 3 roof pressure valve bodies.
3, wafer type butterfly valve according to claim 1 and 2 is characterized in that butterfly plate upper end axle sleeve and liner are the tapering sealing, and butterfly plate lower end axle sleeve and liner 4 are the shape linear sealing of concave-convex type garden.
4, wafer type butterfly valve according to claim 1 and 2 is characterized in that butterfly plate parcel engineering plastics or rubber layer.
5, wafer type butterfly valve according to claim 3 is characterized in that butterfly plate parcel engineering plastics or rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114464 CN1074741A (en) | 1992-12-19 | 1992-12-19 | The wafer type butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114464 CN1074741A (en) | 1992-12-19 | 1992-12-19 | The wafer type butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1074741A true CN1074741A (en) | 1993-07-28 |
Family
ID=4946945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92114464 Pending CN1074741A (en) | 1992-12-19 | 1992-12-19 | The wafer type butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1074741A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829198A (en) * | 2012-09-04 | 2012-12-19 | 西安交通大学 | Imitated shell type butterfly plate for butterfly valve |
| CN110869655A (en) * | 2017-07-11 | 2020-03-06 | 爱三工业株式会社 | Double eccentric valve |
-
1992
- 1992-12-19 CN CN 92114464 patent/CN1074741A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829198A (en) * | 2012-09-04 | 2012-12-19 | 西安交通大学 | Imitated shell type butterfly plate for butterfly valve |
| CN102829198B (en) * | 2012-09-04 | 2014-04-23 | 西安交通大学 | Imitated shell type butterfly plate for butterfly valve |
| CN110869655A (en) * | 2017-07-11 | 2020-03-06 | 爱三工业株式会社 | Double eccentric valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Guoqing Document name: Deemed as a notice of withdrawal |
|
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |