CN206889698U - A kind of sealing structure of butterfly valve - Google Patents
A kind of sealing structure of butterfly valve Download PDFInfo
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- CN206889698U CN206889698U CN201720397016.XU CN201720397016U CN206889698U CN 206889698 U CN206889698 U CN 206889698U CN 201720397016 U CN201720397016 U CN 201720397016U CN 206889698 U CN206889698 U CN 206889698U
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- valve
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- pressing plate
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Abstract
The utility model provides a kind of sealing structure of butterfly valve, and its is simple in construction, easy to assembly, and leakage rate can obtain effective control, good seal performance, and can be not only used for regulation and also be used as the use of cuttability valve；It includes valve body, valve plate, valve shaft, the valve shaft connects the valve plate through the valve body, in the valve body with being provided with corresponding annular protrusion on sealing surface of valve plate, corresponding sealing ring is equipped with by pressing plate on the raised contact surface of the valve plate, the sealing ring uses fluorubber material, the bump bottom ends of the valve body contact with the sealing loop section on the outside of the pressing plate, to realize sealing.
Description
Technical field
Instrument valve technical field is the utility model is related to, specially a kind of sealing structure of butterfly valve.
Background technology
The structure of existing low-load butterfly valve is as shown in figure 1, it includes valve body 1, valve plate 2, valve shaft 3, and source of the gas is by pneumatically holding
Row device 4 drives valve shaft 3 to rotate, and valve shaft 3 drives valve plate 2 to turn over certain angle, realizes the opening and closing of butterfly valve, existing low negative
Carrying butterfly valve has the metal flat sealing structure form of use：First, as shown in Fig. 2 it is by mutual in valve plate 2 and valve body 1
Sealing contact surface is provided with the annular projection of matching；Second, as shown in figure 3, be that the sealing surface of valve plate 2 is provided with into scarf,
Above two structure type, when valve is closed, be by between valve plate 2 and valve body 1 sealing surface contact flat seal, two
The contact surface of person is larger, and due to factors such as moment of torsion, processing, the intrinsic gap between valve plate 2 and the contact surface of valve body 1 causes close
Sealing property is poor；And the leakage rate of two kinds of forms is respectively the 1% and 0.4% for rated capacity of rated capacity, leakage rate is still very
Greatly, also it is only capable of as adjustment type valve using, real cut-out can not be realized.
The content of the invention
In view of the above-mentioned problems, the utility model provides a kind of sealing structure of butterfly valve, its is simple in construction, easy to assembly,
Leakage rate can obtain effective control, good seal performance, and can be not only used for regulation and also be used as the use of cuttability valve.
Its technical scheme is such, and it includes valve body, valve plate, valve shaft, and the valve shaft is passed through described in valve body connection
Valve plate, in the valve body with being provided with corresponding annular protrusion on sealing surface of valve plate, it is characterised in that in the raised of the valve plate
Corresponding sealing ring is equipped with by pressing plate on contact surface, the sealing ring uses fluorubber material, the bump bottom ends of the valve body
Contacted with the sealing loop section on the outside of the pressing plate, to realize sealing.
It is further characterized by, and the width of the pressing plate is less than the raised width of the valve plate, the valve body it is convex
Play bottom and be provided with projection, the bottom face of the projection is circular arc, the projection and the sealing ring portion on the outside of the pressing plate
Split-phase contacts, to realize sealing.
The beneficial effects of the utility model are, by pressing plate equipped with corresponding sealing on the raised contact surface of valve plate
Ring, then the sealing between existing valve plate and valve body is changed into the sealing between valve body and sealing ring, and sealing ring uses fluorubber
Material, the intrinsic gap between valve plate and valve body is greatly reduced, can also be by sealing even there is a small amount of deviation during processing
The elastic deformation of ring makes up, and ensure that sealing property, so as to reduce outside its leakage rate, and the bump bottom ends of valve body and pressing plate
The sealing loop section contact of side, the sealing contact surface between valve plate and valve body also reduce, improve sealing property, particularly exist
Leakage rate during closing is the 0.01% of rated capacity, and also being used as cuttability valve so as to can be not only used for regulation uses, have compared with
Good application and popularizations value.
Brief description of the drawings
Fig. 1 is the structural representation of low-load butterfly valve；
Fig. 2 is a kind of existing seal form broken section mplifying structure schematic diagram of low-load butterfly valve；
Fig. 3 is another existing seal form broken section mplifying structure schematic diagram of low-load butterfly valve；
Fig. 4 is seal form broken section mplifying structure schematic diagram of the present utility model.
Embodiment
As Figure 1 and Figure 4, the utility model includes valve body 1, valve plate 2, valve shaft 3, and valve shaft 3 connects valve plate through valve body 1
2, source of the gas drives valve shaft 3 to rotate by pneumatic actuator 4, and actuator 4 is connected by support 5 with valve body 1, and valve shaft 3 drives valve plate 2
Certain angle is turned over, realizes the opening and closing of butterfly valve, in valve body 1 with being provided with corresponding annular protrusion on the sealing surface of valve plate 2
61st, 62, corresponding sealing ring 9, sealing ring are equipped with hexagon socket head cap screw 8 by pressing plate 7 on the contact surface of the projection 62 of valve plate 2
9 use fluorubber material, and when the valve is closed, the sealing surface of butterfly valve is made up of valve body 1 and sealing ring 9, greatly reduces valve plate 2
Intrinsic gap between valve body 1, even there is a small amount of deviation during processing, it can also be made up by the elastic deformation of sealing ring 9,
Sealing property is ensure that, so as to reduce its leakage rate, the width of pressing plate 7 is less than the width of the projection 62 of valve plate 2, valve body 1
Raised 61 bottoms are provided with projection 10, and the bottom face of projection 10 is circular arc, projection 10 and the part phase of sealing ring 9 in the outside of pressing plate 7
Contact, to realize sealing, valve plate 2 and valve body 1, that is, the contact area of valve body 1 and sealing ring 9 are greatly reduced, due to being
Soft seal, sealing contact surface are small, and sealing property gets a promotion, and the leakage rate when butterfly valve is closed has reached for rated capacity
0.01%, it also is used as the use of cuttability valve so as to can be not only used for regulation.
Claims (2)
1. a kind of sealing structure of butterfly valve, it includes valve body, valve plate, valve shaft, and the valve shaft connects the valve through the valve body
Plate, in the valve body with being provided with corresponding annular protrusion on sealing surface of valve plate, it is characterised in that raised in the valve plate connects
Corresponding sealing ring is equipped with by pressing plate in contacting surface, the sealing ring uses fluorubber material, the bump bottom ends of the valve body with
Sealing loop section contact on the outside of the pressing plate, to realize sealing.
2. the sealing structure of a kind of butterfly valve according to claim 1, it is characterised in that the width of the pressing plate is less than described
The raised width of valve plate, the bump bottom ends of the valve body are provided with projection, and the bottom face of the projection is circular arc, the projection
It is in contact with the sealing loop section on the outside of the pressing plate, to realize sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720397016.XU CN206889698U (en) | 2017-04-17 | 2017-04-17 | A kind of sealing structure of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720397016.XU CN206889698U (en) | 2017-04-17 | 2017-04-17 | A kind of sealing structure of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889698U true CN206889698U (en) | 2018-01-16 |
Family
ID=61323765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720397016.XU Active CN206889698U (en) | 2017-04-17 | 2017-04-17 | A kind of sealing structure of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889698U (en) |
-
2017
- 2017-04-17 CN CN201720397016.XU patent/CN206889698U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |