CN207064659U - A kind of three eccentricity hard seal butterfly valve - Google Patents
A kind of three eccentricity hard seal butterfly valve Download PDFInfo
- Publication number
- CN207064659U CN207064659U CN201721028829.8U CN201721028829U CN207064659U CN 207064659 U CN207064659 U CN 207064659U CN 201721028829 U CN201721028829 U CN 201721028829U CN 207064659 U CN207064659 U CN 207064659U
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- valve
- surface portion
- conical surface
- sealing ring
- dish plate
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Abstract
It the utility model is related to a kind of three eccentricity hard seal butterfly valve, three eccentricity hard seal butterfly valve includes the valve body with valve pocket, the valve seat being arranged in valve pocket, dish plate and the valve rod for being used to drive dish plate to rotate being arranged on dish plate, sealing ring is provided with the outer peripheral face of dish plate, the medial surface of the valve seat is in the pyramidal structure of axis and valve axis eccentric setting, the tip of pyramidal structure is backwards to medium direction of flow, the medial surface of valve seat includes the first conical surface portion and the second conical surface portion of circumferential transition connection, the taper of first conical surface portion is more than the taper of the second conical surface portion, the outer peripheral face of sealing ring, which is provided with to be used to seal with the first conical surface portion, to be coordinated the first conical seal (contact) face and coordinates the second conical seal (contact) face for being sealed with the second conical surface portion.Under the pressure of medium in valve pocket, due to the cone match between sealing ring and valve seat, sealing ring is pressed further by adding its sealing effectiveness.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of three eccentricity hard seal butterfly valve.
Background technology
At present, three eccentricity hard seal butterfly valve is used for realizing pipe-line system break-make and the part that flow controls as a kind of,
Extremely wide application is obtained in the multiple fields such as oil, chemical industry, metallurgy, water power.Three eccentricity hard seal butterfly valve, such as Fig. 1 institutes
Showing, there is an offset or dish b at valve shaft axis and dish plate center, and the valve opening axis of valve shaft axis and valve body has an offset or dish e,
The contact surface of valve body and dish plate is sealing surface, and the sealing surface is a special-shaped conical surface, and the cone angle of the conical surface is 2 α, the axis of the conical surface
There is the angle that an angle is β to bias between the valve opening axis of valve body.Need to set sealing structure between valve seat and dish plate, due to
The medial surface of valve seat has conical section and flat segments, and sealing ring is provided with dish plate, and the outer peripheral face of sealing ring is also equipped with taper
Seal section and straight seal section.But when dish plate is closed, and pressure medium is larger in valve pocket, straight seal section is under pressure medium
Deform it is larger, easily occur medium leakage problem, cause seal failure.
The content of the invention
The purpose of this utility model is to provide a kind of preferable three eccentricity hard seal butterfly valve of sealing effectiveness.
To achieve the above object, a kind of three eccentricity hard seal butterfly valve of the present utility model adopts the following technical scheme that：It is a kind of
Three eccentricity hard seal butterfly valve, including the valve body with valve pocket, the valve seat being arranged in valve pocket, dish plate and the use being arranged on dish plate
In being provided with sealing ring on the valve rod for driving dish plate to rotate, the outer peripheral face of dish plate, the medial surface of the valve seat is in axis and valve body
The pyramidal structure that eccentric axis are set, the tip of pyramidal structure include circumferential mistake backwards to medium direction of flow, the medial surface of valve seat
The first conical surface portion and the second conical surface portion of connection are crossed, the taper of the first conical surface portion is more than the second conical surface portion
Taper, the outer peripheral face of sealing ring be provided be used to seal with the first conical surface portion coordinate the first conical seal (contact) face and for
The sealing of second conical surface portion coordinates the second conical seal (contact) face.
The sealing ring includes the multilayer sealing ring for stacking setting successively along axis.
The sealing ring is graphite material.
The beneficial effects of the utility model：When dish plate closes valve pocket, the first conical seal (contact) face and the first conical surface portion are close
Envelope coordinates, and the second conical seal (contact) face and the sealing of the second conical surface portion coordinate, under the pressure of the medium in valve pocket, due to sealing
Cone match between circle and valve seat, sealing ring are pressed further by adding its sealing effectiveness, the cone of the first conical surface portion
Degree more than the taper of the second conical surface portion, ensure dish plate in the presence of valve rod can smooth rotation to open and close valve pocket.It is above-mentioned
Structure, which solves the problems, such as when pressure medium is big easily to occur in the prior art medium leakage in valve pocket, causes seal failure.
Brief description of the drawings
Fig. 1 is the structural representation of three eccentricity hard seal butterfly valve in background technology；
Fig. 2 is a kind of structural representation of the embodiment one of three eccentricity hard seal butterfly valve of the present utility model；
Fig. 3 is structural representation when dish plate closes valve pocket；
Fig. 4 is structural representation when dish plate opens valve pocket.
Embodiment
A kind of embodiment one of three eccentricity hard seal butterfly valve of the present utility model：As shown in figs 2-4, including valve body 1, valve
Body 1 is provided with valve pocket 2, and three eccentricity hard seal butterfly valve also includes valve rod 5, the valve seat 4 and dish plate 3 being arranged in valve pocket 2, valve rod 5
Being connected with dish plate 3 can drive dish plate 3 to rotate to open and close valve pocket 2, and the upper end of valve body 1 is additionally provided with to be rotated for driving stem 5
Drive mechanism.
The medial surface of valve seat 4 comes in the axis pyramidal structure eccentric with valve axis, the tip of pyramidal structure backwards to medium
Flowing direction, the medial surface of valve seat 4 includes the first conical surface portion 41 and the second conical surface portion 42 of circumferential transition connection, and first
The taper of conical surface portion 41 is more than the taper of the second taper face 42.Sealing ring 6 is provided with the outer peripheral face of dish plate 3, is sealed
Circle 6 outer peripheral face be provided be used for the first conical surface portion 41 seal coordinate the first conical seal (contact) face 61 and for second cone
The sealing of shape face part 42 coordinates the second conical seal (contact) face 62.Sealing ring 6 includes the multilayer sealing ring for stacking setting successively along axis.
Sealing ring is graphite material.
When dish plate 3 closes valve pocket 2, the first conical seal (contact) face 61 and the sealing of the first conical surface portion 41 coordinate, the second taper
The sealing of the conical surface portion 42 of sealing surface 62 and second coordinates, under the pressure of the medium in valve pocket 2, due to sealing ring 6 and valve seat 4
Between cone match, sealing ring 6 is pressed further by adding its sealing effectiveness, and the taper of the first conical surface portion 41 is more than
The taper of second conical surface portion 42, ensure dish plate 3 in the presence of valve rod 5 can smooth rotation to open and close valve pocket 2.Above-mentioned knot
The problem of medium leakage causes seal failure in valve pocket, in the prior art easily occurs when pressure medium is big for structure final result.
A kind of embodiment two of three eccentricity hard seal butterfly valve of the present utility model, the difference with embodiment one are, seal
Ring is resistant to elevated temperatures elastomeric material.
A kind of embodiment three of three eccentricity hard seal butterfly valve of the present utility model, the difference with embodiment one are, seal
Enclose as integral type structure.
Claims (3)
1. a kind of three eccentricity hard seal butterfly valve, including the valve body with valve pocket, the valve seat being arranged in valve pocket, dish plate and it is arranged at
The valve rod for being used to drive dish plate to rotate on dish plate, is provided with sealing ring on the outer peripheral face of dish plate, it is characterised in that：The valve seat
Medial surface in the pyramidal structure of axis and valve axis eccentric setting, the tip of pyramidal structure is backwards to medium direction of flow, valve
The medial surface of seat includes the first conical surface portion and the second conical surface portion of circumferential transition connection, the cone of the first conical surface portion
More than the taper of the second conical surface portion, the outer peripheral face of sealing ring is provided with to be used to coordinate the with the sealing of the first conical surface portion degree
One conical seal (contact) face and for the second conical surface portion seal coordinate the second conical seal (contact) face.
2. three eccentricity hard seal butterfly valve according to claim 1, it is characterised in that：The sealing ring is included along axis successively
Stack the multilayer sealing ring of setting.
3. three eccentricity hard seal butterfly valve according to claim 2, it is characterised in that：The sealing ring is graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721028829.8U CN207064659U (en) | 2017-08-17 | 2017-08-17 | A kind of three eccentricity hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721028829.8U CN207064659U (en) | 2017-08-17 | 2017-08-17 | A kind of three eccentricity hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207064659U true CN207064659U (en) | 2018-03-02 |
Family
ID=61515628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721028829.8U Active CN207064659U (en) | 2017-08-17 | 2017-08-17 | A kind of three eccentricity hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207064659U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592742A (en) * | 2018-05-03 | 2018-09-28 | 中山铁王流体控制设备有限公司 | Three-eccentric-butterfly-valve valve seat and butterfly plate sealing ring special measurement tool |
| CN110848403A (en) * | 2019-10-30 | 2020-02-28 | 铜陵新创流体科技有限公司 | Three-eccentric hard sealing butterfly valve |
| US11519509B2 (en) | 2020-02-14 | 2022-12-06 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11841089B2 (en) | 2020-02-14 | 2023-12-12 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11946557B2 (en) | 2020-02-14 | 2024-04-02 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11953113B2 (en) | 2020-02-14 | 2024-04-09 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
-
2017
- 2017-08-17 CN CN201721028829.8U patent/CN207064659U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592742A (en) * | 2018-05-03 | 2018-09-28 | 中山铁王流体控制设备有限公司 | Three-eccentric-butterfly-valve valve seat and butterfly plate sealing ring special measurement tool |
| CN110848403A (en) * | 2019-10-30 | 2020-02-28 | 铜陵新创流体科技有限公司 | Three-eccentric hard sealing butterfly valve |
| CN110848403B (en) * | 2019-10-30 | 2021-05-25 | 铜陵新创流体科技有限公司 | Three-eccentric hard sealing butterfly valve |
| US11519509B2 (en) | 2020-02-14 | 2022-12-06 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11841089B2 (en) | 2020-02-14 | 2023-12-12 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11946557B2 (en) | 2020-02-14 | 2024-04-02 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
| US11953113B2 (en) | 2020-02-14 | 2024-04-09 | Crane Chempharma & Energy Corp. | Valve with unobstructed flow path having increased flow coefficient |
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