CN202927151U - Butterfly swing check valve - Google Patents
Butterfly swing check valve Download PDFInfo
- Publication number
- CN202927151U CN202927151U CN 201220541809 CN201220541809U CN202927151U CN 202927151 U CN202927151 U CN 202927151U CN 201220541809 CN201220541809 CN 201220541809 CN 201220541809 U CN201220541809 U CN 201220541809U CN 202927151 U CN202927151 U CN 202927151U
- Authority
- CN
- China
- Prior art keywords
- valve
- annular slab
- valve body
- check valve
- plate
- 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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Abstract
The utility model discloses a butterfly swing check valve which comprises a valve body. Connecting flanges are arranged at two ends of the valve body. An annular plate is arranged in the valve body. A valve plate is connected with one side of the annular plate in a hinged mode. A sealing piece adheres to a contact surface of the valve plate and the annular plate. A protrusion is arranged on the valve plate. A rubber layer is coated on the protrusion. The butterfly swing check valve is simple in structure, easy to manufacture, good in backflow prevention effect, and high in safety performance due to the fact that the rubber layer is capable of effectively protecting the valve plate.
Description
Technical field:
The utility model relates to valve field, and concrete is a kind of butterfly check valve.
Background technique:
Safety check claims again one-way valve or check valve, and its effect is to prevent that the medium in pipeline from flowing backwards, and open-shut device is opened voluntarily or closes by media flow and strength, to prevent that valve that medium flows backwards is on safety check.Safety check belongs to the self-acting valve class, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to a direction, to try to avert accidents.
The flap of safety check is opened under fluid pressure action, and fluid flows to outlet side from suction side.During lower than outlet side, flap autoshutdown under the factor effects such as fluid pressure difference, gravity own flows backwards to prevent fluid when suction side pressure.
The model utility content:
It is a kind of simple in structure that the utility model provides, and makes simply the anti-good butterfly check valve of backflow effect.
The technical solution of the utility model:
A kind of butterfly check valve, comprise valve body, the valve body two ends are provided with adpting flange, it is characterized in that: be provided with annular slab in described valve body, described annular slab one side is hinged with valve plate, be bonded with diaphragm seal on valve plate and described annular slab surface of contact, described valve plate is provided with projection, covers one deck rubber layer on described projection.
Described butterfly check valve is characterized in that: described annular slab tilts to be fixed on described valve interior wall, and the annular slab endoporus is cone shape hole.
Advantage of the present utility model:
The utility model is simple in structure, makes simply, and anti-backflow effect is good, and rubber layer is effectively protected valve plate, and is safe.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Embodiment:
As shown in Figure 1, a kind of butterfly check valve, comprise valve body 1, valve body 1 two ends are provided with adpting flange 2, be provided with annular slab 3 in valve body 1, described annular slab 3 one sides are hinged with valve plate 4, are bonded with diaphragm seal on valve plate 4 and described annular slab 3 surface of contact, described valve plate 4 is provided with and covers one deck rubber layer 6 on projection 5, described protruding 5.Annular slab 3 tilts to be fixed on described valve body 1 inwall, and annular slab 3 endoporus are cone shape hole.
Claims (2)
1. butterfly check valve, comprise valve body, the valve body two ends are provided with adpting flange, it is characterized in that: be provided with annular slab in described valve body, described annular slab one side is hinged with valve plate, be bonded with diaphragm seal on valve plate and described annular slab surface of contact, described valve plate is provided with projection, covers one deck rubber layer on described projection.
2. butterfly check valve according to claim 1 is characterized in that: described annular slab tilts to be fixed on described valve interior wall, and the annular slab endoporus is cone shape hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541809 CN202927151U (en) | 2012-10-22 | 2012-10-22 | Butterfly swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541809 CN202927151U (en) | 2012-10-22 | 2012-10-22 | Butterfly swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927151U true CN202927151U (en) | 2013-05-08 |
Family
ID=48217111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220541809 Expired - Fee Related CN202927151U (en) | 2012-10-22 | 2012-10-22 | Butterfly swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927151U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122636A (en) * | 2016-08-30 | 2016-11-16 | 张家港华日法兰有限公司 | A kind of anti-return high-pressure pipe member of band reinforcement |
| CN106122635A (en) * | 2016-08-30 | 2016-11-16 | 张家港华日法兰有限公司 | A kind of high-pressure pipe member |
| CN106122539A (en) * | 2016-08-30 | 2016-11-16 | 张家港华日法兰有限公司 | A kind of Novel backflow-preventing high-pressure pipe member |
| CN106195359A (en) * | 2016-08-30 | 2016-12-07 | 张家港华日法兰有限公司 | A kind of anti-return high-pressure pipe member |
-
2012
- 2012-10-22 CN CN 201220541809 patent/CN202927151U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122636A (en) * | 2016-08-30 | 2016-11-16 | 张家港华日法兰有限公司 | A kind of anti-return high-pressure pipe member of band reinforcement |
| CN106122635A (en) * | 2016-08-30 | 2016-11-16 | 张家港华日法兰有限公司 | A kind of high-pressure pipe member |
| CN106122539A (en) * | 2016-08-30 | 2016-11-16 | 张家港华日法兰有限公司 | A kind of Novel backflow-preventing high-pressure pipe member |
| CN106195359A (en) * | 2016-08-30 | 2016-12-07 | 张家港华日法兰有限公司 | A kind of anti-return high-pressure pipe member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20131022 |