CN202708210U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN202708210U CN202708210U CN 201220392415 CN201220392415U CN202708210U CN 202708210 U CN202708210 U CN 202708210U CN 201220392415 CN201220392415 CN 201220392415 CN 201220392415 U CN201220392415 U CN 201220392415U CN 202708210 U CN202708210 U CN 202708210U
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- CN
- China
- Prior art keywords
- valve
- valve body
- diameter
- fluid
- valve ball
- 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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- Check Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model discloses a check valve which mainly comprises a valve body and a valve ball. One end in the valve body is provided with a neck opening to form a step. The inner diameter of the neck opening is smaller than the diameter of the inside of the valve body. The valve ball is arranged in the valve body. A limiting ring is arranged at the other end of the valve body and is fixed on the valve body. The diameter of the valve ball is smaller than the diameter of the inside of the valve body and bigger than the inner diameter of the neck opening. The inner diameter of the limiting ring is smaller than the diameter of the valve ball. A sealing ring is arranged at the neck opening. According to the check valve, the valve ball is arranged in the valve body, when fluid flows forward, the valve ball can be burst through by surge pressure of the fluid so that the fluid can flow through the check valve without hindrance, and when the fluid flows back or does not flow, the valve body is pushed to the neck opening quickly by the gravity of the valve ball and the pressure of backflow of the fluid to block the neck opening. Meanwhile, the sealing ring is arranged, and the valve ball is in close fit with the neck opening so that the check valve is good in effect of preventing the fluid from backflow.
Description
Technical field
The utility model relates to the control valve field, especially a kind of safety check that prevents that fluid from refluxing.
Background technique
Safety check also claims one-way valve, is widely used in the fluid system, and the principal security fluid flows in a direction, prevents that fluid from refluxing.Existing safety check, when fluid occur to reflux the valve closing time-delay more of a specified duration, cause more fluid to reflux, action effect is poor.Simultaneously existing check valve structure is complicated, inconvenient maintenance when breaking down.In addition, existing safety check, owing to be rigid the contact between valve body and the valve ball, sealing effect is poor, the anti-backflow DeGrain.
The model utility content
The purpose of this utility model is to provide a kind of simple in structure, the safety check that non-return is effective for the deficiency that solves above-mentioned technology.
In order to achieve the above object, the safety check that the utility model is designed, it mainly comprises valve body and valve ball, one end of valve inner is provided with eck, form step, the internal diameter of eck is less than the diameter of valve inner, and described valve ball is arranged in the valve body, be provided with limited ring at the valve body the other end, limited ring is fixed on the valve body, and the diameter of valve ball is less than the diameter of valve inner, greater than the internal diameter of eck, the internal diameter of limited ring is less than the valve ball diameter, and the place is provided with seal ring at eck.This structural feature is: when fluid refluxed, valve ball utilized surge pressure that fluid refluxes and the gravity of self, can closely cooperate with eck rapidly, prevents the fluid backflow.
As optimization, the angle that forms between the eck that is provided with the seal ring place and valve interior wall when being subject to the return pressure of larger fluid, avoids valve ball to be stuck on the step between eck and the valve interior wall, the phenomenon that causes safety check to lose efficacy greater than 90 degree.
The resulting safety check of the utility model is provided with valve ball in valve body, when the fluid following current, the surge pressure of fluid is washed valve ball open, without hindrance this safety check that flows through of fluid; When fluid occur to reflux or do not flow, valve ball utilized gravity and the pressure of fluid when refluxing of self, rapidly valve ball is pushed into eck, and eck is blocked.Be provided with simultaneously seal ring, valve ball cooperates closely with eck, and it is effective to prevent that fluid from refluxing.The angle that forms between the eck that is provided with the seal ring place and valve interior wall in addition when valve ball is subject to the return pressure of larger fluid, can avoid valve ball to be stuck on the step between eck and the valve interior wall, the phenomenon that causes safety check to lose efficacy greater than 90 degree.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model will be further described by reference to the accompanying drawings below by embodiment.
Embodiment 1:
As shown in Figure 1, the safety check that present embodiment is described, it mainly comprises valve body 1 and valve ball 2, one end of valve body 1 inside is provided with eck 3, form step, the internal diameter of eck 3 is less than the diameter of valve body 1 inside, described valve ball 2 is arranged in the valve body 1, be provided with limited ring 5 at valve body 1 the other end, limited ring 5 is fixed on the valve body 1, and the diameter of valve ball 2 is less than the diameter of valve body 1 inside, internal diameter greater than eck 3, the internal diameter of limited ring 5 is less than valve ball 2 diameters, and 3 places are provided with seal ring 4 at eck, and the angle that forms between the eck 3 that is provided with seal ring 4 places and valve body 1 inwall is greater than 90 degree.
Claims (2)
1. safety check, it mainly comprises valve body and valve ball, it is characterized in that an end of valve inner is provided with eck, forms step, the internal diameter of eck is less than the diameter of valve inner, described valve ball is arranged in the valve body, is provided with limited ring at the valve body the other end, and limited ring is fixed on the valve body, the diameter of valve ball is less than the diameter of valve inner, greater than the internal diameter of eck, the internal diameter of limited ring is less than the valve ball diameter, and the place is provided with seal ring at eck.
2. safety check according to claim 1, the angle that it is characterized in that forming between the eck that is provided with the seal ring place and valve interior wall is greater than 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392415 CN202708210U (en) | 2012-08-09 | 2012-08-09 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392415 CN202708210U (en) | 2012-08-09 | 2012-08-09 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708210U true CN202708210U (en) | 2013-01-30 |
Family
ID=47588516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220392415 Expired - Fee Related CN202708210U (en) | 2012-08-09 | 2012-08-09 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708210U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571217A (en) * | 2016-03-01 | 2016-05-11 | 南京信息工程大学 | Bionic artificial larynx energy-saving device refrigerator energy-saving pressure-maintaining system |
| CN106090425A (en) * | 2016-06-17 | 2016-11-09 | 广州凯亨阀门有限公司 | A kind of general valve protection device |
| CN109667746A (en) * | 2018-07-06 | 2019-04-23 | 上海如迪流体输送设备有限公司 | Sanitary pneumatic diaphragm pump ball room |
| CN113134338A (en) * | 2021-05-25 | 2021-07-20 | 兰州金通储能动力新材料有限公司 | Ammonia gas recovery device capable of achieving air exchange |
-
2012
- 2012-08-09 CN CN 201220392415 patent/CN202708210U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571217A (en) * | 2016-03-01 | 2016-05-11 | 南京信息工程大学 | Bionic artificial larynx energy-saving device refrigerator energy-saving pressure-maintaining system |
| CN106090425A (en) * | 2016-06-17 | 2016-11-09 | 广州凯亨阀门有限公司 | A kind of general valve protection device |
| CN109667746A (en) * | 2018-07-06 | 2019-04-23 | 上海如迪流体输送设备有限公司 | Sanitary pneumatic diaphragm pump ball room |
| CN109667746B (en) * | 2018-07-06 | 2024-01-23 | 上海如迪流体输送设备有限公司 | Ball chamber of sanitary pneumatic diaphragm pump |
| CN113134338A (en) * | 2021-05-25 | 2021-07-20 | 兰州金通储能动力新材料有限公司 | Ammonia gas recovery device capable of achieving air exchange |
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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: 20130130 Termination date: 20130809 |