CN201396490Y - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN201396490Y CN201396490Y CN2009201198368U CN200920119836U CN201396490Y CN 201396490 Y CN201396490 Y CN 201396490Y CN 2009201198368 U CN2009201198368 U CN 2009201198368U CN 200920119836 U CN200920119836 U CN 200920119836U CN 201396490 Y CN201396490 Y CN 201396490Y
- Authority
- CN
- China
- Prior art keywords
- press plate
- valve body
- valve
- top board
- valve gap
- 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)
Abstract
A check valve comprises a valve body and a valve cover provided with a gas inlet end and a gas outlet end; wherein a spring is provided in the valve cover, the upper part of an upper press plate is provided inside the valve cover, while a lower press plate is provided under the upper press plate, a seal gasket is provided between the upper press plate and the lower press plate, the upper press plate and the lower press plate are tightened via bolts, the valve cover is fixed at the middle of the valve body, and the seal gasket seals the seal port of the valve body. The check valve has simple structure, easy assembly, low cost and the application for refrigeration system.
Description
Technical field
The utility model relates to a kind of safety check, refers in particular to a kind of safety check that is used for refrigeration system.
Background technique
Chinese patent once disclosed a kind of " check valve for auger-type cooling medium compressor " (China, publication number CN2842015Y, open day on November 29th, 2006), it includes tool inlet opening, two ends and delivery outlet and inner housing with a passage, inlet opening place is provided with first cover plate and second cover plate that is articulated in passage, when fluid flows through inlet opening place and is exerted pressure in the inlet opening, fluid can push first open, second cover plate and in the flow channel, and this two cover plate of pile warp flows out toward delivery outlet, during fluid reflux, this two cover plate of meeting promotion covers the inlet opening and prevents that fluid is back to compressor by delivery outlet and prevent that fluid from being flowed out by the inlet opening, because this two cover plate turns over to the pivot-connecting position in can promoting according to fluid, can not influence the circulation area of fluid in passage, the pressure that can allow fluid keep leveling off to the inlet opening to flow at equipped at outlet port.But its structure more complicated, assembling is trouble, and cost is higher.
The model utility content
The purpose of this utility model is to provide a kind of safety check, and it is simple in structure, and is easy to assembly, and cost is lower, is applicable to refrigeration system.
For achieving the above object, the solution that the utility model is taked is: a kind of safety check, it comprises valve body and valve gap, and valve body has inlet end and outlet side, and spring is installed in the valve gap, top board top is installed in the valve gap, press table is arranged at the top board bottom, places sealing gasket between top board and the press table, and top board and press table are tightened by bolt, valve gap is fixed in the middle of the valve body, and sealing gasket is enclosed on the sealed mouth of valve body.
Fluid after the compression enters safety check by inlet end, backs down sealing gasket, comes out from the outlet side.When the fluid of outlet side returned safety check, sealing gasket formed the nonreversibility of fluid motion because the effect of spring is closed automatically.The utility model is simple in structure, and is easy to assembly, and cost is lower, is applicable to refrigeration system.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, protecting jacket, 2, valve body, 3, valve gap, 4, top board, 5, bolt, 6, spring, 7, press table, 8, sealing gasket, 9, hexagon socket head cap screw, 10, inlet end, 11, the outlet side.
Embodiment
Referring to Fig. 1, a kind of safety check, it comprises valve body 2 and valve gap 3, and valve body 2 has inlet end 10 and outlet side 11, and spring 6 is installed in the valve gap 3, top board 4 tops are installed in the valve gap 3, press table 7 is arranged at top board 4 bottoms, places sealing gasket 8 between top board 4 and the press table 7, and top board 4 is tightened by bolt 5 with press table 7, valve gap 3 is fixed in the middle of the valve body 2 by hexagon socket head cap screw 9, and sealing gasket 8 is enclosed on the sealed mouth of valve body 2.Sealing gasket 8 two ends cover protecting jacket 1 is taken down protecting jacket 1 during use.
Claims (1)
1, a kind of safety check, it comprises valve body (2) and valve gap (3), valve body (2) has inlet end (10) and outlet side (11), it is characterized in that: spring (6) is installed in the valve gap (3), top board (4) top is installed in the valve gap (3), press table (7) is arranged at top board (4) bottom, place sealing gasket (8) between top board (4) and the press table (7), top board (4) is tightened by bolt (5) with press table (7), valve gap (3) is fixed in the middle of the valve body (2) by hexagon socket head cap screw (9), and sealing gasket (8) is enclosed on the sealed mouth of valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201198368U CN201396490Y (en) | 2009-05-10 | 2009-05-10 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201198368U CN201396490Y (en) | 2009-05-10 | 2009-05-10 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396490Y true CN201396490Y (en) | 2010-02-03 |
Family
ID=41618999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201198368U Expired - Fee Related CN201396490Y (en) | 2009-05-10 | 2009-05-10 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396490Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014108073A1 (en) * | 2013-01-08 | 2014-07-17 | 南通欧意姆制冷设备有限公司 | Piston type check valve |
| CN104197069A (en) * | 2014-09-05 | 2014-12-10 | 陈巧琴 | Valve with valve deck protector |
| CN104197068A (en) * | 2014-09-05 | 2014-12-10 | 陈巧琴 | Valve with sealing caps |
-
2009
- 2009-05-10 CN CN2009201198368U patent/CN201396490Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014108073A1 (en) * | 2013-01-08 | 2014-07-17 | 南通欧意姆制冷设备有限公司 | Piston type check valve |
| CN104197069A (en) * | 2014-09-05 | 2014-12-10 | 陈巧琴 | Valve with valve deck protector |
| CN104197068A (en) * | 2014-09-05 | 2014-12-10 | 陈巧琴 | Valve with sealing caps |
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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: 20100203 Termination date: 20100510 |