CN203703170U - A central butterfly valve - Google Patents
A central butterfly valve Download PDFInfo
- Publication number
- CN203703170U CN203703170U CN201320895524.2U CN201320895524U CN203703170U CN 203703170 U CN203703170 U CN 203703170U CN 201320895524 U CN201320895524 U CN 201320895524U CN 203703170 U CN203703170 U CN 203703170U
- Authority
- CN
- China
- Prior art keywords
- valve
- seat ring
- valve seat
- seat circle
- type
- 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.)
- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model relates to a central type butterfly valve, including valve body, valve disc, valve seat circle and valve rod, its characterized in that valve rod is equipped with the asymmetric boss type sealing ring even as an organic whole with the valve seat circle with valve seat circle relative position department, and the sealed face on the valve seat circle is for leading to the inclined plane, and the sealed face that the lower extreme was gone up to the valve seat circle is the platform type, and the terminal surface of the anti-flange of valve seat circle is cyclic annular semicircle type boss. Its advantages are reliable sealing performance, simple structure, easy manufacture, easy maintenance and long service life.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of centre type butterfly valve.
Background technique
At present, the valve rod place of centre type butterfly valve adopts the sealing configuration of O type circle mostly, and the rubber sealing ring of this structure and seat ring are separated type, exists seal ring short working life, the problem of maintenance difficult; The sealing surface of seat ring is the boss seal form that adopt also more, and valve disc easily causes damage to seat ring sealing surface in rotatablely moving; The anti-end face of flange of seat ring mostly is right-angle plane structure, is unfavorable for the dismounting and change of seat ring.These structural deficiencies, reduce the integral sealing reliability of centre type butterfly valve and working life.
Summary of the invention
The purpose of this utility model is to provide a kind of good sealing effect, be convenient to safeguard, be easy to the centre type butterfly valve of processing, long service life.
Technical solution of the present utility model is: a kind of centre type butterfly valve, comprise valve body, valve disc, seat ring and valve rod, it is characterized in that valve rod and seat ring relative position place are provided with the asymmetric boss type seal ring being connected as a single entity with seat ring, sealing surface on seat ring is logical inclined-plane, the sealing surface of seat ring upper and lower end is flatbed, and the end face of the anti-flange of seat ring is the semi-circular boss of ring-type.
The utility model, by the asymmetric boss seal ring matching with valve rod is set on seat ring, makes seat ring and valve rod have better sealing and does not need separately to establish Sealing; The logical inclined-plane of seat ring sealing surface can seamlessly transit valve disc annular sealing surface and seat ring annular sealing surface, has reduced valve disc infringement to seat ring sealing surface in rotatablely moving; Seat ring upper and lower end platform sealing surface has played better effect to the sealing of valve disc upper and lower end face, and is conducive to the location and installation of valve disc; The semi-circular boss of the anti-end face of flange ring-type of seat ring is convenient to the installation of seat ring, and can prevent that valve is for a long time under pipeline flange clamped condition, and the position that makes seat ring be embedded in valve inner produces transition deformation and is sticky on valve body and is unfavorable for dismounting and change.
Feature of the present utility model is: the sealability of valve is reliable, simple in structure, is easy to manufacture, and is convenient to safeguard long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is that the B-B of Fig. 1 is to sectional view;
Fig. 4 is the local enlarged diagram of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in the figure, the utility model is made up of valve body 1, valve disc 2, seat ring 3 and valve rod 4.On valve rod, be provided with seat ring relative position place the asymmetric boss type seal ring 5 being connected as a single entity with seat ring, compress asymmetric boss type seal ring and realize the sealing that is connected of valve rod and seal ring by valve rod, asymmetric boss type seal ring and seat ring are an entirety, without additionally increasing Sealing again.Sealing surface on seat ring is logical inclined-plane 6, and the sealing surface of seat ring upper and lower end is flatbed 7, and the logical oblique sealing surface of valve disc and seat ring and flatbed sealing surface interference fit make valve disc compression valve seat ring, realize the sealing of valve.The anti-end face of flange that seat ring is embedded in valve body is the semi-circular boss structure 8 of ring-type, is convenient to the installation of seat ring and is securely fixed in valve body, can also prevent that seat ring from pressing in contracting sticky glutinous with valve body at tubing clamp for a long time.
Claims (1)
1. a centre type butterfly valve, comprise valve body, valve disc, seat ring and valve rod, it is characterized in that valve rod and seat ring relative position place are provided with the asymmetric boss type seal ring being connected as a single entity with seat ring, sealing surface on seat ring is logical inclined-plane, the sealing surface of seat ring upper and lower end is flatbed, and the end face of the anti-flange of seat ring is the semi-circular boss of ring-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895524.2U CN203703170U (en) | 2013-12-29 | 2013-12-29 | A central butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895524.2U CN203703170U (en) | 2013-12-29 | 2013-12-29 | A central butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703170U true CN203703170U (en) | 2014-07-09 |
Family
ID=51053615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320895524.2U Expired - Fee Related CN203703170U (en) | 2013-12-29 | 2013-12-29 | A central butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703170U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286863A (en) * | 2015-06-11 | 2017-01-04 | 河南般德流体控制有限公司 | A kind of Novel separated type synthesis butterfly valve seat |
| CN109058481A (en) * | 2018-09-26 | 2018-12-21 | 上海沪东造船阀门有限公司 | A kind of sealing ring and the sealing compensation type center butterfly valve that the sealing ring is set |
-
2013
- 2013-12-29 CN CN201320895524.2U patent/CN203703170U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286863A (en) * | 2015-06-11 | 2017-01-04 | 河南般德流体控制有限公司 | A kind of Novel separated type synthesis butterfly valve seat |
| CN109058481A (en) * | 2018-09-26 | 2018-12-21 | 上海沪东造船阀门有限公司 | A kind of sealing ring and the sealing compensation type center butterfly valve that the sealing ring is set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20181229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |