CN2771588Y - Dual-backstop non-return valve with rubber diaphragm drum - Google Patents
Dual-backstop non-return valve with rubber diaphragm drum Download PDFInfo
- Publication number
- CN2771588Y CN2771588Y CN 200420119088 CN200420119088U CN2771588Y CN 2771588 Y CN2771588 Y CN 2771588Y CN 200420119088 CN200420119088 CN 200420119088 CN 200420119088 U CN200420119088 U CN 200420119088U CN 2771588 Y CN2771588 Y CN 2771588Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- fixed
- check device
- utility
- 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 - Lifetime
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- Check Valves (AREA)
Abstract
The utility model discloses a double-check device check valve with a rubber membrane cylinder, which is mainly composed of a valve body, a first stage check device and a second stage check device. The utility model is characterized in that a fixed sleeve which is fixed by a supporting rib plate is arranged in the valve body, and the second stage check device is arranged at the outlet section of the valve, and is composed of a cylindrical rubber membrane valve clack and a supporting net hood, wherein the front end of the rubber membrane valve clack is fixed in the fixed sleeve of the valve body and the supporting net hook is fixed at the inner side of the valve body. The utility model has the advantages of reasonable structure, light weight, little noise, little backflow speed and small water hammers and is applied to various check occasions.
Description
Technical field:
The utility model belongs to valve technology field, particularly relates to a kind of check valve of double non-return device with cylindrical diaphragm of rubber.
Background technique:
The flap that existing safety check adopts, quality is big, close that water hammer is big, resistance is big.
Summary of the invention:
It is a kind of that the purpose of this utility model is to provide, and can effectively overcome above-mentioned defective, and two equal bands of reliable sealing simultaneously of check device seal the double non-return device valve of controlling device synchronously.To achieve these goals, the technological scheme that the utility model adopted is: a kind of check valve of double non-return device with cylindrical diaphragm of rubber, mainly form by valve body, first order check device and second level check device, its characteristics are: be provided with fixed cover in the valve body and fixed by bearing rib, second level check device is arranged at the outlet section of valve, is made up of diaphragm of rubber flap, the support guard of tubular; Cylindrical diaphragm of rubber flap front end is fixed in the valve body fixed cover, supports the inboard that guard is fixed in valve body.Owing to adopt such scheme, to be not difficult to draw as drawing a conclusion, the utility model is rational in infrastructure, is skillfully constructed, and has light weight, noise is little, and back-flow velocity is little, and water hammer is little; Can be applicable to various non-return occasions, the tool promotional value.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
Embodiment:
Below in conjunction with drawings and Examples the utility model is described in further detail.
Among the figure, the utility model is made up of valve body 1, first order check device 2, second level check device 3; Wherein, it is fixing by bearing rib 11 to be provided with fixed cover 12 in the valve body, and first order check device is arranged at the inducer of valve body, and second level check device is arranged at the outlet section of valve body; Second level check device is made up of diaphragm of rubber flap 31, the support guard 32 of tubular; Cylindrical diaphragm of rubber flap 31 front ends are fixed in the valve body fixed cover 12, and tension force is closed with the support guard 32 support rubber cylindrical diaphragms 31 that are fixed in valve body in the outside, and form sealing and pay; During following current, cylindrical diaphragm of rubber 31 outside pressure are greater than inside pressure, make cylindrical diaphragm of rubber 31 to internal strain, medium passes and supports the valve pocket flow direction outlet of guard 32 from rubber film tube 31 outsides, current are by the afterbody rectification of vertical gusset 11 in the valve pocket and rubber film tube 31, swirling flow is little, and flow resistance is less; During non-return, outlet pressure is greater than leading portion pressure, and promptly rubber film tube 31 inside pressure are greater than outside pressure, and rubber film tube 31 opens rapidly with outside support guard 32 and contacts transmission tension force, forms sealing.
Claims (1)
1, a kind of check valve of double non-return device with cylindrical diaphragm of rubber, mainly form by valve body, first order check device and second level check device, it is characterized in that: be provided with fixed cover in the valve body and fix by bearing rib, second level check device is arranged at the outlet section of valve, is made up of diaphragm of rubber flap, the support guard of tubular; Cylindrical diaphragm of rubber flap front end is fixed in the valve body fixed cover, supports the inboard that guard is fixed in valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420119088 CN2771588Y (en) | 2004-12-30 | 2004-12-30 | Dual-backstop non-return valve with rubber diaphragm drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420119088 CN2771588Y (en) | 2004-12-30 | 2004-12-30 | Dual-backstop non-return valve with rubber diaphragm drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2771588Y true CN2771588Y (en) | 2006-04-12 |
Family
ID=36705378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420119088 Expired - Lifetime CN2771588Y (en) | 2004-12-30 | 2004-12-30 | Dual-backstop non-return valve with rubber diaphragm drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2771588Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798833B (en) * | 2009-02-05 | 2011-07-20 | 姜全德 | Three-in-one backflow preventer |
| CN106567947A (en) * | 2016-11-10 | 2017-04-19 | 澳柯玛股份有限公司 | One-way valves and freezer equipped with one-way valves |
| CN107295431A (en) * | 2016-04-11 | 2017-10-24 | 富士通天株式会社 | loudspeaker unit |
-
2004
- 2004-12-30 CN CN 200420119088 patent/CN2771588Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798833B (en) * | 2009-02-05 | 2011-07-20 | 姜全德 | Three-in-one backflow preventer |
| CN107295431A (en) * | 2016-04-11 | 2017-10-24 | 富士通天株式会社 | loudspeaker unit |
| CN107295431B (en) * | 2016-04-11 | 2019-07-26 | 富士通天株式会社 | Loudspeaker unit |
| CN106567947A (en) * | 2016-11-10 | 2017-04-19 | 澳柯玛股份有限公司 | One-way valves and freezer equipped with one-way valves |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141230 Granted publication date: 20060412 |