CN205639645U - Three -eccentric center butterfly valve - Google Patents
Three -eccentric center butterfly valve Download PDFInfo
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- CN205639645U CN205639645U CN201520939286.XU CN201520939286U CN205639645U CN 205639645 U CN205639645 U CN 205639645U CN 201520939286 U CN201520939286 U CN 201520939286U CN 205639645 U CN205639645 U CN 205639645U
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- valve
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- eccentric
- butterfly
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Abstract
The utility model discloses a three -eccentric center butterfly valve, include valve body, valve shaft, install in the epaxial valve plate of valve and set up sealed pair between valve plate and valve body, sealed vice sealing washer is installed on the downthehole supporting step of valve body, and the sealing washer is through the clamp plate and meet the screw axial fixity on compressing tightly the support soon, it is downthehole in the valve body to compress tightly bearing installation, sealed vice sealed face is the circular conical surface, and the cone angle beta of this circular conical surface is 25 - 32, the central line of circular conical surface and the contained angle alpha between the valve body central line are 8 - 12. The utility model discloses a three -eccentric center butterfly valve can guarantee sealed effect, improve life.
Description
Technical field
This utility model relates to a kind of valve, particularly relates to the improvement of a kind of butterfly valve.
Background technology
Butterfly valve is a kind of valve being rotated by valve plate and carrying out opening and closing, and its simple in construction, volume are little, keying is rapid, only
Valve plate need to be made to rotate 90 ° by valve shaft can realize once opening and closing, therefore it obtains using the most widely in a lot of occasions.
Butterfly valve is generally made up of components such as valve body, valve shaft, valve plate and sealing pairs, and its sealing pair is arranged at discoidal valve plate periphery and valve
Between body, the version of sealing pair, shape and size are the key determining butterfly valve seal performance and service life, at present, butterfly
The various structures forms such as the existing central seal of valve, single eccentric sealed, double the most eccentric sealed and three eccentricity sealing, various sealing structure shapes
Though formula also has corresponding performance advantage, but the sealing pair of butterfly valve produces more serious in opening-closing process due to relative motion
How friction so that its sealing property declines, the life-span is affected, can guarantee that the sealing property that its maintenance is good, it is ensured that uses
Life-span, in addition it is also necessary to the planform etc. of the structure of butterfly valve, particularly sealing pair is further improved raising.
Utility model content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of three
Eccentric-butterfly-valve, it is ensured that sealing effectiveness, improves service life.
For solving above-mentioned technical problem, a kind of three-eccentric-butterfly-valve of the present utility model, including valve body, valve shaft, it is installed on valve
Valve plate on axle and the sealing pair being arranged between valve plate and valve body, the sealing ring of described sealing pair is arranged in valve body hole
On supporting step, sealing ring is fixed by pressing plate and the screw axial that is screwed on compressing support, and described compressing support is installed on
In valve body hole；The sealing surface of described sealing pair is taper seat, and the cone angle beta of this taper seat is 25 °-32 °, described taper seat
Angle α between centrage and valve body centrage is 8 °-12 °.
In said structure, due on the supporting step that the sealing ring of described sealing pair is arranged in valve body hole, sealing ring
Being fixed by pressing plate and the screw axial that is screwed on compressing support, described compressing support is installed in valve body hole, then sealing pair
Sealing ring be a relatively independent component, and installed by pressing plate, screw, the sealing surface of sealing ring just can be easily
It is optimized, reaches optimal geomery by processing, thus for ensureing that sealing effectiveness provides convenient, and this installation knot
Structure is also convenient for being replaced sealing ring, thus extends the service life of butterfly valve.Again owing to the sealing surface of described sealing pair is for round
The conical surface, the cone angle beta of this taper seat is 25 °-32 °, and the angle α between centrage and the valve body centrage of described taper seat is
8 °-12 °, then the planform of sealing pair is optimized in the common structure size of three-eccentric-butterfly-valve with size, when valve rod band
Dynamic valve plate rotate and during opening/shutting valve, the sealing pair of this taper seat and corresponding cone angle beta and the centrage of taper seat
And the angle α between valve body centrage can guarantee that the least angle range between two sealing surfaces of sealing pair at closure or openness
The most i.e. disengage, between two sealing surfaces, be nearly free from any friction, after valve closing, the torque put on valve shaft exist
A suitable seal pressure is produced, it is ensured that the tight closing of valve on sealing pair；Additionally, the sealing pair of this taper seat and phase
Answer the angular range of angle α between the angular range of cone angle beta and the centrage of taper seat and valve body centrage to adapt to simultaneously
The dimensionally-optimised requirement of sealing pair of conventional butterfly valve specification.
A kind of preferred implementation of the present utility model, described sealing ring is folded with graphite cake by spaced corrosion resistant plate
Close and constitute.This embodiment, the sealing ring that rustless steel is formed by stacking with flexible graphite cake is used to have certain elasticity, valve
In closing process, sealing ring can produce certain elastic deformation, and sealing pair contact condition more preferably, further ensures sealing pair
Sealing effectiveness.
Another kind of preferred implementation of the present utility model, described sealing ring is by between two panels corrosion resistant plate and two panels graphite cake
Constituting every arranging overlapping, adjacent with supporting step is a piece of for graphite cake.Using this embodiment, the graphite cake with flexibility is put
Between corrosion resistant plate and supporting step, contact with compression screw is corrosion resistant plate simultaneously, makes graphite cake obtain preferably
Protection, further increases the service life of sealing pair.
Another preferred implementation of the present utility model, described compressing support is annular, the compressing support of annular
Outer ring is provided with installation step, in the bearing mounting groove that this installation step is plugged in valve body hole.Use this embodiment, compress and prop up
In the bearing mounting groove that seat is installed in valve body hole, its compact conformation, it is not necessary to increase the overall dimensions of butterfly valve.
This utility model further preferred embodiment, described compressing support is constituted annular by four pieces, wherein two pieces
Shape arcuately.Using this embodiment, compressing support is split type structure, it is ensured that compressing support can be pacified conveniently and efficiently
In the bearing mounting groove being loaded in valve body hole.
Another further preferred embodiment of this utility model, the centrage of described valve shaft and the centrage of valve body hole it
Between be provided with eccentric throw A, the centrage of described taper seat and valve body hole centerline are in same plane, and this plane is perpendicular to valve
Shaft centre line, the summit of taper seat and valve shaft centerline are in the same side of valve body hole centrage.Use this embodiment, enter one
Step ensure that valve plate friction during rotation opens and closes between sealing pair is in the angle range of minimum, makes the sealing of valve
Effect is in optimum state, is guaranteed further service life.
Accompanying drawing explanation
With specific embodiment, this utility model three-eccentric-butterfly-valve is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of a kind of specific embodiment of this utility model three-eccentric-butterfly-valve；
Fig. 2 is the A-A sectional view in structure shown in Fig. 1；
Fig. 3 is the structural representation of compressing support in structure shown in Fig. 1；
Fig. 4 is the sectional view of Fig. 3；
Fig. 5 is the structural representation of sealing ring in structure shown in Fig. 1.
In figure: 1-valve body, 2-valve shaft, 3-supporting step, 4-pressing plate, 5-screw, 6-valve plate, 7-compressing support,
71-installation step, 8-sealing pair, 9-sealing ring, 91-corrosion resistant plate, 92-graphite cake.
Detailed description of the invention
In the three-eccentric-butterfly-valve shown in Fig. 1 and Fig. 2, valve shaft 2 is arranged on valve body 1, in valve shaft 2 centrage and valve body 1
Hole vertically and is provided with eccentric throw A between the centrage in the centrage of valve shaft 2 and valve body 1 hole, and valve shaft 2 stretches out one end of valve body 1
It is connected with driving means；The valve shaft 2 position in valve body 1 valve opening is provided with valve plate 6, and valve shaft 2 is through set on valve plate 6 one side
The connection ear mount put is connected with valve plate 6 by connecting pin；It is provided with sealing pair 8 between valve plate 6 periphery and valve body 1 endoporus, seals
The sealing ring 9 of secondary 8 is arranged on the supporting step 3 in valve body 1 hole, as it is shown in figure 5, sealing ring 9 is by spaced rustless steel
Plate 91 is constituted with graphite cake 92 overlapping, and wherein corrosion resistant plate 91 and graphite cake 92 are respectively arranged with two panels, and adjacent with supporting step 3 is a piece of
For graphite cake 92, correspondingly, outermost is a piece of for corrosion resistant plate 91；Sealing ring 9 is by pressing plate 4 and is screwed on compressing support 7
Screw 5 axial restraint, pressing plate 4 is annular steel plate, and compressing support 7 is in annular, and 12 screws 5 are distributed in compressing support 7 circle
Ring end face, sealing ring 9 is anchored on the supporting step 3 of valve body 1 endoporus by screw 5 by pressing plate 4；As shown in Figure 3 and Figure 4, circle
Compressing support 7 outer ring of annular is provided with installation step 71, and this installation step 71 is plugged in the bearing mounting groove in valve body 1 hole,
Compressing support 7 by being positioned at compressing support 7 centrage both sides and two parallel planes with centerline parallel are divided into four pieces, such two
The shape of two pieces outside segmentation plane arcuately, so can be easy to the installation of compressing support 7, two pieces of elder generations arcuately during installation
Insert in the mounting groove in valve body 1 hole respectively, then remaining two pieces are inserted between two pieces arcuately respectively；Sealing pair 8
Sealing surface is taper seat, i.e. sealing ring 9 endoporus and valve plate 6 outer peripheral face with the laminating of sealing ring 9 endoporus is taper seat, taper seat
Cone angle beta be 25 °-32 °, the centrage of taper seat and valve body hole centerline are in same plane, and this plane is perpendicular to valve
Axle 2 centrage, the summit of taper seat and valve shaft 2 centerline in the same side of valve body hole centrage, the centrage of taper seat with
Angle α between valve body centrage is 8 °-12 °.
Below only list detailed description of the invention more of the present utility model, but this utility model is not limited to that, also
May be made that more improvement and conversion, as in described sealing ring 9, corrosion resistant plate 91 and graphite cake 92 may not be and be respectively arranged with two
Sheet, and can be to be respectively arranged with three；Described sealing ring 9 may not be to be spaced by corrosion resistant plate 91 and graphite cake 92 and is formed by stacking,
And can be to be formed by stacking with such as the other type of flexible sealing materials such as PTFE by corrosion resistant plate 91.And so on, as long as
Improvement done on the basis of this utility model ultimate principle and conversion, be regarded as falling into protection domain of the present utility model
In.
Claims (6)
1. a three-eccentric-butterfly-valve, including valve body (1), valve shaft (2), the valve plate (6) being installed on valve shaft (2) and be arranged at valve
Sealing pair (8) between plate (6) and valve body (1), it is characterised in that: the sealing ring (9) of described sealing pair (8) is arranged on valve body
(1), on the supporting step (3) in hole, sealing ring (9) is axial by pressing plate (4) and the screw (5) that is screwed on compressing support (7)
Fixing, described compressing support (7) is installed in valve body (1) hole；The sealing surface of described sealing pair (8) is taper seat, this taper seat
Cone angle beta be 25 °-32 °, the angle α between centrage and the valve body centrage of described taper seat is 8 °-12 °.
Three-eccentric-butterfly-valve the most according to claim 1, it is characterised in that: described sealing ring (9) is by spaced stainless
Steel plate (91) is constituted with graphite cake (92) overlapping.
Three-eccentric-butterfly-valve the most according to claim 1 and 2, it is characterised in that: described sealing ring (9) is by two panels corrosion resistant plate
(91) arranging overlapping constitute with two panels graphite cake (92) interval, adjacent with supporting step (3) is a piece of for graphite cake (92).
Three-eccentric-butterfly-valve the most according to claim 1, it is characterised in that: described compressing support (7) in annular, annular
Compressing support (7) outer ring be provided with installation step (71), this installation step (71) is plugged in the bearing mounting groove in valve body (1) hole
In.
5. according to the three-eccentric-butterfly-valve described in claim 1 or 4, it is characterised in that: described compressing support (7) is constituted circle by four pieces
Annular, wherein the shape of two pieces is arcuately.
Three-eccentric-butterfly-valve the most according to claim 1, it is characterised in that: the centrage of described valve shaft (2) and valve body (1) hole
Centrage between be provided with eccentric throw A, the centrage of described taper seat and valve body hole centerline in same plane, this put down
Face is perpendicular to valve shaft (2) centrage, the summit of taper seat and valve shaft (2) centerline in the same side of valve body hole centrage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520939286.XU CN205639645U (en) | 2015-11-23 | 2015-11-23 | Three -eccentric center butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520939286.XU CN205639645U (en) | 2015-11-23 | 2015-11-23 | Three -eccentric center butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205639645U true CN205639645U (en) | 2016-10-12 |
Family
ID=57077679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520939286.XU Active CN205639645U (en) | 2015-11-23 | 2015-11-23 | Three -eccentric center butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205639645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183542A (en) * | 2021-07-28 | 2022-03-15 | 杰锋汽车动力系统股份有限公司 | New forms of energy fuel cell car prevents leaking butterfly valve |
-
2015
- 2015-11-23 CN CN201520939286.XU patent/CN205639645U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183542A (en) * | 2021-07-28 | 2022-03-15 | 杰锋汽车动力系统股份有限公司 | New forms of energy fuel cell car prevents leaking butterfly valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |