CN202418746U - High-pressure piston type check valve - Google Patents
High-pressure piston type check valve Download PDFInfo
- Publication number
- CN202418746U CN202418746U CN2012200175515U CN201220017551U CN202418746U CN 202418746 U CN202418746 U CN 202418746U CN 2012200175515 U CN2012200175515 U CN 2012200175515U CN 201220017551 U CN201220017551 U CN 201220017551U CN 202418746 U CN202418746 U CN 202418746U
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- valve body
- cylinder
- high pressure
- 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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Abstract
The utility model discloses a high-pressure piston type check valve. The piston type check valve is characterized in that a cylindrical opening is arranged on the upper portion of a valve body, a bearing platform which is used for supporting a piston cylinder is arranged on the lower portion of the opening, the piston cylinder is sleeved inside the cylindrical opening on the upper portion of the valve body, a pressing sleeve which is matched with the inner diameter of the piston cylinder is arranged on the upper portion of the piston cylinder, the height of the upper surface of the pressing sleeve is flush with that of the valve body, the pressing sleeve is connected with the valve body through a set screw, and a valve seat is fixedly connected with the valve body through a set screw. The high-pressure piston type check valve has the advantages that the piston cylinder is firmly connected with the valve body, so that the processing requirements are reduced and the production cost is saved; and adoption of set screws increases the stability of the structure of the valve, so that the service life of the valve is long.
Description
Technical field
The utility model relates to a kind of valve, specifically is a kind of high pressure piston formula safety check.
Background technique
Piston check valve is that a kind of media flow and strength leaned on is opened voluntarily or closed, with the valve that prevents that medium from flowing backwards.Existing high pressure piston formula safety check, piston cylinder is connected with valve gap, valve body through tenon, and soundness, the sealing of connection are not enough, and processing request is also than higher; In addition, existing high pressure piston formula safety check is high in temperature, the temperature difference is big or pipeline exists when vibrating, and is loosening easily.
The model utility content
The purpose of the utility model is to provide that a kind of processing is simple, good sealing effect, robust high pressure piston formula safety check.
The utility model has adopted following technological scheme:
High pressure piston formula safety check is characterized in that, comprises valve seat, valve gap, the piston of valve body, cylindrical structure, and valve body lower portion is provided with valve inlet and valve export, and valve inlet is following, and valve export is last; Valve seat is connected the jointing place of valve inlet and valve export vertically, and valve seat top is provided with the annular boss of passive substantially horizontal, and annular boss reinforces the connection through Cock screw; Valve body top is provided with cylinder open, and lower opening portion is provided with the cushion cap of supporting piston cylinder; Valve body top is connected through bolt with valve gap, is provided with seal ring between valve body and the valve gap; Be socketed with piston cylinder in the cylinder open of valve body top, piston cylinder top is provided with the gland consistent with its internal diameter, and the height of gland upper surface is equal with valve body, and gland is connected on the valve body through Cock screw; Be provided with piston in the piston cylinder, the piston bottom is shaped on the sealing surface that cooperatively interacts with valve seat; Be provided with spring in the piston cavity, spring connects piston and valve gap; Be shaped on one-way valve and equalizing orifice on the piston, one-way valve is connected piston cavity and valve export with equalizing orifice, and the import of one-way valve links to each other with piston cavity; Valve gap is provided with suspension ring and exhaust-valve, and exhaust-valve connects piston cavity.
Preferably, said piston is provided with piston ring, strengthens the sealability of piston.
Preferentially, said valve seat and valve body are for being threaded or welding.
Preferentially, said valve seat and piston are hard sealing, and said hard sealing optimized angle is 45 °.
Preferably, said valve seat and piston are the soft or hard double-sealing, can improve the disposable up-to-standard rate of passing through of high pressure valve low pressure seal test.
The advantage of the utility model is:
(1) being connected firmly of piston cylinder and valve body, and processing request reduced, and saved cost of production;
(2) employing of Cock screw has increased the stability of valve mechanism, thereby makes valve have longer working life.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Label among the figure: 1-valve body, 2-Cock screw, 3-valve seat, 4-exhaust-valve, 5-piston, 6-piston ring, 7-piston cylinder, 8-equalizing orifice, 9-one-way valve, 10-spring, 11-gland, 12-Cock screw, 13-seal ring, 14-valve gap, 15-stud bolt, 16-nut, 17-suspension ring.
Embodiment
As shown in Figure 1, high pressure piston formula safety check is characterized in that, comprises valve body 1, valve seat 3, valve gap 14, piston 5, and valve body lower portion is provided with valve inlet and valve export, and valve inlet is following, and valve export is last; The valve seat of cylindrical structure is connected the jointing place of valve inlet and valve export vertically, and valve seat top is provided with the annular boss of passive substantially horizontal, and annular boss reinforces the connection through Cock screw 2; Valve body top is provided with cylinder open, and lower opening portion is provided with the cushion cap of supporting piston cylinder; Valve body top is connected through bolt with valve gap, is provided with seal ring 13 between valve body and the valve gap; Be socketed with piston cylinder 7 in the cylinder open of valve body top, piston cylinder top is provided with the gland consistent with its internal diameter 11, and the height of gland upper surface is equal with valve body, and gland is connected on the valve body through Cock screw 12; Be provided with piston in the piston cylinder, the piston bottom is shaped on the sealing surface that cooperatively interacts with valve seat; Be provided with spring 10 in the piston cavity, spring connects piston and valve gap; Be shaped on one-way valve 9 and equalizing orifice 8 on the piston, one-way valve is connected piston cavity and valve export with equalizing orifice, and the import of one-way valve links to each other with piston cavity; Valve gap is provided with suspension ring 17 and exhaust-valve 4, and exhaust-valve connects piston cavity; Said piston is provided with piston ring 6; , said valve seat and valve body are for being threaded; Said valve seat and piston are the soft or hard double-sealing.
The working principle of the utility model is following:
When the pressure of valve inlet was higher than valve export, piston rose, and one-way valve and equalizing orifice be the interior pressure of release piston cavity simultaneously, and the piston quick and stable is risen; When the pressure of valve inlet is lower than valve export, during valve closing, closed check valve, medium slowly gets into piston cavity through equalizing orifice 5, and piston cavity pressure is slowly increased, and piston is slowly closed, and reduces water hammer.
Claims (5)
1. high pressure piston formula safety check is characterized in that, comprises valve seat, valve gap, the piston of valve body, cylindrical structure, and valve body lower portion is provided with valve inlet and valve export, and valve inlet is following, and valve export is last; Valve seat is connected the jointing place of valve inlet and valve export vertically, and valve seat top is provided with the annular boss of passive substantially horizontal, and annular boss is reinforced and being connected of valve body through Cock screw; Valve body top is provided with cylinder open, and lower opening portion is provided with the cushion cap of supporting piston cylinder; Valve body top is connected through bolt with valve gap, is provided with seal ring between valve body and the valve gap; Be socketed with piston cylinder in the cylinder open of valve body top, piston cylinder top is provided with the gland consistent with its internal diameter, and the height of gland upper surface is equal with valve body, and gland is connected on the valve body through Cock screw; Be provided with piston in the piston cylinder, the piston bottom is shaped on the sealing surface that cooperatively interacts with valve seat; Be provided with spring in the piston cavity, spring connects piston and valve gap; Be shaped on one-way valve and equalizing orifice on the piston, one-way valve is connected piston cavity and valve export with equalizing orifice, and the import of one-way valve links to each other with piston cavity; Valve gap is provided with suspension ring and exhaust-valve, and exhaust-valve connects piston cavity.
2. high pressure piston formula safety check as claimed in claim 1 is characterized in that said piston is provided with piston ring.
3. high pressure piston formula safety check as claimed in claim 1 is characterized in that, said valve seat and valve body are for being threaded or welding.
4. high pressure piston formula safety check as claimed in claim 1 is characterized in that, said valve seat and piston are hard sealing, and said hard sealing optimized angle is 45 °.
5. high pressure piston formula safety check as claimed in claim 1 is characterized in that said valve seat and piston are the soft or hard double-sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200175515U CN202418746U (en) | 2012-01-16 | 2012-01-16 | High-pressure piston type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200175515U CN202418746U (en) | 2012-01-16 | 2012-01-16 | High-pressure piston type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418746U true CN202418746U (en) | 2012-09-05 |
Family
ID=46743516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200175515U Expired - Lifetime CN202418746U (en) | 2012-01-16 | 2012-01-16 | High-pressure piston type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418746U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216672A (en) * | 2013-04-09 | 2013-07-24 | 西诺威阀门控制（苏州）有限公司 | Muted piston-type valve clack and check valve |
| CN104141811A (en) * | 2014-06-18 | 2014-11-12 | 浙江诚一阀门有限公司 | High-pressure piston type flow rate regulating check multifunctional valve |
| CN105443812A (en) * | 2014-08-15 | 2016-03-30 | 德维阀门铸造（苏州）有限公司 | Mute piston-type check valve |
| CN106246961A (en) * | 2016-10-10 | 2016-12-21 | 苏州工业园区咖乐美电器有限公司 | A kind of unidirectional accumulator valve |
-
2012
- 2012-01-16 CN CN2012200175515U patent/CN202418746U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216672A (en) * | 2013-04-09 | 2013-07-24 | 西诺威阀门控制（苏州）有限公司 | Muted piston-type valve clack and check valve |
| CN104141811A (en) * | 2014-06-18 | 2014-11-12 | 浙江诚一阀门有限公司 | High-pressure piston type flow rate regulating check multifunctional valve |
| CN105443812A (en) * | 2014-08-15 | 2016-03-30 | 德维阀门铸造（苏州）有限公司 | Mute piston-type check valve |
| CN106246961A (en) * | 2016-10-10 | 2016-12-21 | 苏州工业园区咖乐美电器有限公司 | A kind of unidirectional accumulator valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |