CN206347121U - Three eccentricity sealed butterfly valve seals auxiliary structure - Google Patents
Three eccentricity sealed butterfly valve seals auxiliary structure Download PDFInfo
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- CN206347121U CN206347121U CN201621485312.7U CN201621485312U CN206347121U CN 206347121 U CN206347121 U CN 206347121U CN 201621485312 U CN201621485312 U CN 201621485312U CN 206347121 U CN206347121 U CN 206347121U
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- valve body
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- valve
- conical surface
- circular conical
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Abstract
A kind of three eccentricity sealed butterfly valve sealing auxiliary structure of the utility model, including valve body, valve shaft, butterfly plate, sealing pair is provided between side wall and valve body in the valve body, the sealing ring of the sealing pair is installed on butterfly plate, the sealing surface of the sealing pair is circular conical surface, and the angle α between the circular conical surface center line and valve body center line is 15 ° 20 °；Eccentric throw a is provided between the radial centre lines of the valve shaft axial line and sealing surface, eccentric throw b is provided between the butterfly plate center line and valve shaft axial line.Angle between circular conical surface center line and valve body center line of the present utility model is accurately 17.5 °, the three eccentricity sealed butterfly valve is preferably sealed.
Description
Technical field
The utility model relates generally to valve field, more particularly to a kind of three eccentricity sealed butterfly valve sealing auxiliary structure.
Background technology
Butterfly valve is a kind of valve opened and closed by valve plate rotation, valve plate is rotated 90 ° by valve shaft
Realize and open and close.Existing three eccentricity sealed butterfly valve produces more serious friction in opening-closing process due to relative motion, makes its close
Sealing property declines, and the life-span receives influence.The sealing surface of valve plate is circular conical surface, circular conical surface center line and valve in three eccentricity sealed butterfly valve
Angle between body center line, it designs general at 8 ° -12 °, had much room for improvement in the sealing of valve.
Utility model content
The utility model is in view of the above-mentioned problems, provide a kind of three eccentricity sealed butterfly valve sealing auxiliary structure, it is intended to solve above-mentioned
Problem.
The purpose of this utility model can be realized by following technical proposals：Three eccentricity sealed butterfly valve seals auxiliary structure,
Including valve body, valve shaft, butterfly plate, the valve shaft is rotationally arranged in valve body, the butterfly plate be rotatably sheathed on valve shaft and
In valve body, sealing pair is provided between the side wall and valve body in the valve body, the end face of the butterfly plate is provided with annular slot, institute
The sealing ring for stating sealing pair is installed on butterfly plate, and is stuck in annular slot, and the sealing surface of the sealing pair is circular conical surface, described
Circular conical surface is asymmetric, and the circular conical surface is divided into both sides along valve body center line, and one side of the circular conical surface favours valve body center line,
Another side is parallel to valve body center line, and the angle α between the circular conical surface center line and valve body center line is 15 ° -20 °；It is described
Eccentric throw a is provided between valve shaft axial line and the radial centre lines of sealing surface, between the butterfly plate center line and valve shaft axial line
Provided with eccentric throw b, the summit of the circular conical surface is located at the same side of valve body center line with valve shaft axial line.
Further, the angle α between the circular conical surface center line and valve body center line is 17.5 °.
Further, there is the projection being engaged with the sealing surface of butterfly plate in the valve body, it is described raised along valve body center
Line is divided into both sides, and described raised one side is engaged with one side of the circular conical surface, the raised another side and the circular cone
The another side in face is engaged, and the sealing surface on the butterfly plate is cylindrical to be provided with spacing y between described raised one side.
The utility model has the advantage of：Angle between circular conical surface center line and valve body center line is accurately 17.5 °, is made
The three eccentricity sealed butterfly valve can be sealed preferably.
Brief description of the drawings
Fig. 1 is the structural representation of three eccentricity sealed butterfly valve closed mode.
Fig. 2 is the structural representation of three eccentricity sealed butterfly valve opening.
Fig. 3 is the cylindrical structural representation of the sealing surface of valve body and butterfly plate.
Part numbers are as follows in figure：
1 valve body, 2 valve shafts, 3 butterfly plates, 4 sealing rings, 5 annular slots, 6 valve body center lines, 7 circular conical surface center lines, 8 sealing surfaces
Radial centre lines, 9 butterfly plate center lines, 10 projections, 11 sealing surfaces, 12 sealing surfaces it is cylindrical.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, becomes apparent from those skilled in the art
Ground understands how to put into practice the utility model.Although describing the utility model with reference to its preferred embodiment, these
Embodiment is to illustrate, rather than limits scope of the present utility model.
As depicted in figs. 1 and 2, the utility model three eccentricity sealed butterfly valve seals an embodiment of auxiliary structure, including valve body
1st, valve shaft 2, butterfly plate 3, the valve shaft 2 are rotationally arranged in valve body 1, and the butterfly plate 3 is rotatably sheathed on valve shaft 2 and position
In in valve body 1, being provided with sealing pair between the side wall and valve body 1 in the valve body 1, the end face of the butterfly plate 3 is provided with annular slot
5, the sealing ring 4 of the sealing pair is installed on butterfly plate 3, and is stuck in annular slot 5, and the sealing surface of the sealing pair is circular cone
Face, the circular conical surface is asymmetric, and the circular conical surface is divided into both sides along valve body center line 6, and one side of the circular conical surface favours valve
Body center line 6, another side is parallel to valve body center line 6, and the angle α between the circular conical surface center line 7 and valve body center line 6 is
17.5°；Between the radial centre lines 8 of the valve shaft axial line and sealing surface 11 be provided with eccentric throw a, the butterfly plate center line 9 with
Eccentric throw b is provided between valve shaft axial line, summit and the valve shaft axial line of the circular conical surface are located at the same of valve body center line 6
Side.
As shown in figure 3, have the projection 10 that is engaged with the sealing surface of butterfly plate 3 in the valve body 1, described raised 10 along valve
Body center line 6 is divided into both sides, and described raised 10 one side is engaged with one side of the circular conical surface, raised 10 another side
It is engaged, is set between the sealing surface cylindrical 12 and described raised 10 one side on the butterfly plate 3 with the another side of the circular conical surface
There is spacing y.
When the three eccentricity sealed butterfly valve is closed, butterfly plate center line 9 is overlapped with valve body center line 6, circular conical surface center line 7 and valve
Angle α between body center line 6 is 17.5 °, and the angle is selected angle, enables the three eccentricity sealed butterfly valve preferably close
Envelope.
It should be pointed out that for the utility model through absolutely proving, can also have a variety of conversion and the implementation of remodeling
Scheme, it is not limited to the specific embodiment of above-mentioned embodiment.Above-described embodiment as just explanation of the present utility model, and
It is not to limitation of the present utility model.In a word, protection domain of the present utility model should include those for ordinary skill
Obvious conversion or replacement and remodeling for personnel.
Claims (3)
1. three eccentricity sealed butterfly valve seals auxiliary structure, including valve body（1）, valve shaft（2）, butterfly plate（3）, the valve shaft（2）Rotatably
Ground is arranged in valve body（1）It is interior, the butterfly plate（3）Rotatably it is sheathed on valve shaft（2）Above and positioned at valve body（1）It is interior, the valve body（1）
Interior side wall and valve body（1）Between be provided with sealing pair, it is characterised in that the butterfly plate（3）End face be provided with annular slot（5）,
The sealing ring of the sealing pair（4）It is installed on butterfly plate（3）On, and it is stuck in annular slot（5）Interior, the sealing surface of the sealing pair is
Circular conical surface, the circular conical surface is asymmetric, and the circular conical surface is along valve body center line（6）It is divided into both sides, one side of the circular conical surface is inclined
Tiltedly in valve body center line（6）, another side is parallel to valve body center line（6）, the circular conical surface center line（7）With valve body center line
（6）Between angle α be 15 ° -20 °；The valve shaft axial line and sealing surface（11）Radial centre lines（8）Between provided with bias
Away from a, the butterfly plate center line（9）Eccentric throw b, summit and the valve shaft axial line of the circular conical surface are provided between valve shaft axial line
Positioned at valve body center line（6）The same side.
2. three eccentricity sealed butterfly valve according to claim 1 seals auxiliary structure, it is characterised in that the circular conical surface center line
（7）With valve body center line（6）Between angle α be 17.5 °.
3. three eccentricity sealed butterfly valve according to claim 1 seals auxiliary structure, it is characterised in that the valve body（1）Interior tool
Have and butterfly plate（3）The projection that is engaged of sealing surface（10）, the projection（10）Along valve body center line（6）It is divided into both sides, it is described
It is raised（10）One side be engaged with one side of the circular conical surface, the projection（10）Another side and the circular conical surface it is another
While being engaged, the butterfly plate（3）On sealing surface it is cylindrical（12）With the projection（10）One side between be provided with spacing y.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621485312.7U CN206347121U (en) | 2016-12-31 | 2016-12-31 | Three eccentricity sealed butterfly valve seals auxiliary structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621485312.7U CN206347121U (en) | 2016-12-31 | 2016-12-31 | Three eccentricity sealed butterfly valve seals auxiliary structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206347121U true CN206347121U (en) | 2017-07-21 |
Family
ID=59324083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621485312.7U Active CN206347121U (en) | 2016-12-31 | 2016-12-31 | Three eccentricity sealed butterfly valve seals auxiliary structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206347121U (en) |
-
2016
- 2016-12-31 CN CN201621485312.7U patent/CN206347121U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |