CN2685682Y - Antipolluting isolating valve - Google Patents
Antipolluting isolating valve Download PDFInfo
- Publication number
- CN2685682Y CN2685682Y CN 200420021390 CN200420021390U CN2685682Y CN 2685682 Y CN2685682 Y CN 2685682Y CN 200420021390 CN200420021390 CN 200420021390 CN 200420021390 U CN200420021390 U CN 200420021390U CN 2685682 Y CN2685682 Y CN 2685682Y
- Authority
- CN
- China
- Prior art keywords
- valve
- atria
- pressure release
- isolating valve
- cavity
- 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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- Safety Valves (AREA)
Abstract
The utility model relates to an anti-polluting isolating valve. The anti-polluting isolating valve is characterized in that both ends of the non-return flap which is close to a valve cavity are respectively provided with a discharging device which is provided with a discharging cavity, the discharging cavity is provided with a pressure relief rod, a diaphragm and a pressing block, and the inner side of the discharging cavity is provided with a pressure relief bore and the upper end of the discharging cavity is provided with a valve cap. Because both ends of the non-return flap which is close to the valve cavity are respectively provided with a discharging device which is provided with a discharging cavity, and the discharging cavity is provided with a pressure relief rod, a diaphragm and a pressing block, the on-off degree of the diaphragm can be controlled by the medium pressure of the fluid when the anti-polluting isolating valve is used. Therefore, the sealing effect is improved, the failure of the sealing closure member caused by the material of the sealing surface and the foreign matter of the pipeline is eliminated, and the phenomenon that the medium in the pipeline flows back is efficiently prevented and the construction cost is economized. The anti-polluting isolating valve can be used for the fluid circuits of the tap water department, the medicine department, the food department, etc., which have strict requirement to water quality.
Description
Technical field:
The utility model relates to the technical field of valve, specifically a kind of improved check valve with anti fouling partition.
Background technique:
Safety check in the market all has been the check device of single effect, because the material of sealing surface and the influence of pipeline impurity, it is close very easily to cause sealing surface to be not closed completely, the leakage backflow phenomenon appears, and then having influenced the purity of import medium, objective reality hidden danger, makes the user have to add extras, increase engineering cost, and influenced the using scope and the life-span thereof of safety check to a great extent.
Summary of the invention:
The purpose of this utility model is to provide a kind of improved antifouling isolating valve, and it can overcome some shortcomings of the prior art.
To achieve these goals, the technical solution of the utility model is: a kind of antifouling isolating valve, it mainly comprises valve body, be arranged on valve pocket, spool and non-return flap in the valve body, it is characterized in that: be provided with eduction gear at the place, non-return flap two ends near valve pocket, this eduction gear has an atria, and pressure release bar, barrier film and briquetting are housed in atria, relief hole is arranged in atria, and the upper end of atria is provided with valve gap.
The utility model is owing to be provided with eduction gear at the place, non-return flap two ends near valve pocket, this eduction gear has an atria, the pressure release bar is housed in atria, barrier film and briquetting, can rely on the pressure medium of fluid to control the keying degree of barrier film during use, improved sealing effect, eliminated the malfunctioning of hermetically closing spare that material and pipeline impurity because of sealing surface causes, prevented the phenomenon that pipeline internal medium refluxes effectively, and saved engineering cost, this antifouling isolating valve can be widely used in tap water, medicine, food etc. are to the fluid circuit of the strict department of water quality requirement.
Description of drawings:
Fig. 1 is the utility model one embodiment's a structural representation
Embodiment:
The utility model will be further described below in conjunction with drawings and Examples.
The utility model is a kind of antifouling isolating valve, it mainly comprises valve body 9, be arranged on the valve pocket 10 in the valve body, spool 11 and two non-return flaps 12, it is characterized in that: be provided with eduction gear at place, two non-return flap 12 two ends near valve pocket 10, this eduction gear has an atria 1, pressure release bar 8 is housed in atria 1, barrier film 5 and briquetting 15, in atria 1, relief hole is arranged, the upper end of atria is provided with valve gap 2, the both sides of atria are two non-return flaps 12 in the enforcement, in valve gap 2, be provided with axle sleeve 4, axle 3 is housed in the axle sleeve 4, and this axle 3 is equipped with barrier film 5 and top board 6, press table 7, barrier film 5 is fixed on, between the press table, lower end near atria 1 is provided with relief hole 13, is provided with pressure release seat 17 in relief hole 13; Axle 3 is connected with pressure release bar 8 and extends to relief hole 13, and is excessive in order to prevent the relief hole unlatching, replys slow, briquetting 15 is equipped with in the bottom of pressure release bar 8, between briquetting 15 and pressure release seat 17, spring 19 is housed, pressure release piece 18 is set in briquetting 15 bottoms, briquetting and pressure release seat to relief hole for being sealed and matched.Atria was under normal pressure state when the utility model used, between briquetting and the pressure release seat for being sealed and matched, when the pressure of atria during greater than specified pressure, pressure medium is to the barrier film compressive deformation, the barrier film that suffers oppression promotes the pressure release bar, the pressure release bar drives briquetting, this moment, relief hole was opening state, superpressure part in the atria is discharged into the outside by relief hole, when pressure in the atria and external balance, under the effect of spring between briquetting and the pressure release seat, relief hole is resetted at once close, barrier film returns normal state simultaneously.
Claims (5)
1, a kind of antifouling isolating valve, it mainly comprises valve body, be arranged on valve pocket, spool and non-return flap in the valve body, it is characterized in that: be provided with eduction gear at place, non-return flap two ends near valve pocket, this eduction gear has an atria, pressure release bar, barrier film and briquetting are housed in atria, relief hole is arranged in atria, the upper end of atria is provided with valve gap.
2, a kind of antifouling isolating valve according to claim 1 is characterized in that: be provided with axle sleeve in valve gap, axle is housed in the axle sleeve, this axle is equipped with barrier film and top board, press table, and barrier film is fixed between the upper and lower pressing plate.
3, a kind of antifouling isolating valve according to claim 1 is characterized in that: the lower end near atria is provided with relief hole, is provided with the pressure release seat in relief hole.
4, according to claim 1 or 2 or 3 described a kind of antifouling isolating valves, it is characterized in that: axle is connected with the pressure release bar and extends to relief hole.
5, according to claim 1 or 2 or 3 described a kind of antifouling isolating valves, it is characterized in that: briquetting is equipped with in the bottom of pressure release bar, between briquetting and pressure release seat spring is housed, and in the briquetting bottom pressure release piece is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021390 CN2685682Y (en) | 2004-03-30 | 2004-03-30 | Antipolluting isolating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021390 CN2685682Y (en) | 2004-03-30 | 2004-03-30 | Antipolluting isolating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2685682Y true CN2685682Y (en) | 2005-03-16 |
Family
ID=34669530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420021390 Expired - Fee Related CN2685682Y (en) | 2004-03-30 | 2004-03-30 | Antipolluting isolating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2685682Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494163A (en) * | 2011-11-26 | 2012-06-13 | 重庆市智能水表有限责任公司 | Leakage-preventing check valve |
| CN107327598A (en) * | 2017-07-01 | 2017-11-07 | 宁波华成阀门有限公司 | A kind of compound double check valve (DCV) of copper modeling and its manufacture method |
-
2004
- 2004-03-30 CN CN 200420021390 patent/CN2685682Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494163A (en) * | 2011-11-26 | 2012-06-13 | 重庆市智能水表有限责任公司 | Leakage-preventing check valve |
| CN102494163B (en) * | 2011-11-26 | 2013-06-26 | 重庆市智能水表有限责任公司 | Leakage-preventing check valve |
| CN107327598A (en) * | 2017-07-01 | 2017-11-07 | 宁波华成阀门有限公司 | A kind of compound double check valve (DCV) of copper modeling and its manufacture method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |