CN2436739Y - Spring type check valve - Google Patents
Spring type check valve Download PDFInfo
- Publication number
- CN2436739Y CN2436739Y CN 00246642 CN00246642U CN2436739Y CN 2436739 Y CN2436739 Y CN 2436739Y CN 00246642 CN00246642 CN 00246642 CN 00246642 U CN00246642 U CN 00246642U CN 2436739 Y CN2436739 Y CN 2436739Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- utility
- valve body
- spring
- 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
The utility model provides a spring type check valve. The utility model comprises a valve body, a support frame, a valve rod sleeve, a valve rod, a valve clack and a spring, wherein, the support frame is fixed in the valve body, the valve rod sleeve is arranged on the support frame, and the valve rod is positioned in the valve rod sleeve. The front end of the valve rod is fixedly connected with a valve clack. The spring is sheathed on the valve rod. The surface of the valve clack is provided with a graphite pad ring which is contacted with a metal sealing surface of the inside of the valve body. The graphite pad ring seals the valve clack and the valve body in the utility model. The utility model not only has good sealing performance, but also has high-temperature resistance and corrosion resistance, and extends the service life of the check valve. The utility model can be used for pipe passages of places of petroleum, chemical industry, steam pipelines, etc.
Description
The utility model relates to a kind of safety check, particularly a kind of spring loaded check valve.
Safety check is a kind of places such as oil, chemical industry, steam line valve commonly used that is used for.Spring loaded check valve is the elastic force effect that utilizes spring, controls the switching of safety check, and it has characteristics such as simple in structure, easy to install, low cost of manufacture, is subjected to liking of users deeply.But present spring loaded check valve is owing to adopt rubber seal or the sealing gasket sealing, exists yielding, the easy problem such as aging of seal ring, directly influences the working life and the technical performance of safety check.
The purpose of this utility model is at the problems referred to above, and a kind of spring loaded check valve that improves structure is provided, and makes it have the characteristics of good seal performance, long service life.
The purpose of this utility model adopts following technical proposal to realize: this spring loaded check valve comprises valve body, support, valve stem casing, valve rod, flap and spring, support is fixed on valve inner, valve stem casing is arranged on the support, valve rod is arranged in valve stem casing, the valve rod front end flap that is being connected, spring housing is connected on the valve rod, and the surface of flap is provided with graphite gasket, and graphite gasket contacts with the metallic sealing section of valve body inboard.
In this safety check, by being set, graphite gasket seals between flap and the valve body, good seal performance not only, and can corrosion-and high-temp-resistant, prolong the working life of safety check.In addition, graphite gasket is positioned at the flap front end, can alleviate the weight of flap during actual production, makes safety check energy horizontal-vertical double-purpose.
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing thereof.
Accompanying drawing is a structural representation of the present utility model.
Among the figure, 1, valve body; 2, support; 3, valve stem casing; 4, valve rod; 5, flap; 6, spring; 7, graphite gasket; 8, pressing plate; 9, screw; 10, metal o-ring.
As shown in the figure, this safety check comprises parts such as valve body 1, support 2, valve stem casing 3, valve rod 4, flap 5 and spring 6.Support 2 connects with valve body 1 by screw thread.Valve stem casing 3 is positioned at the front end of support 2, and is fixed together with support 2.The effect of valve stem casing 3 is spacing to valve rod 4, and valve rod 4 can only be moved vertically.The flap 5 and the valve rod 4 of valve rod 4 front ends are connected as a single entity.The graphite gasket 7 that is used to seal is positioned at flap 5 outer surfaces.In the present embodiment, graphite gasket 7 outsides also are provided with pressing plate 8, and the area of pressing plate 8 is less than the area of graphite gasket 7, and flap 5, graphite gasket 7 and pressing plate 8 threes are fixed together by screw 9.In this safety check, valve body 1 inboard is provided with metal o-ring 10, and metal o-ring 10 is fixed together with valve body 1.Graphite gasket 7 is pressed on the metal o-ring 10, and closing of safety check is to realize by closely cooperating between them.Metal o-ring 10 can adopt materials such as stainless steel to make.This spring loaded check valve can be widely used on the pipeline in places such as oil, chemical industry, steam line.
Claims (3)
1, a kind of spring loaded check valve, comprise valve body (1), support (2), valve stem casing (3), valve rod (4), flap (5) and spring (6), support (2) is fixed on valve body (1) inside, valve stem casing (3) is arranged on the support (2), valve rod (4) is arranged in valve stem casing (3), valve rod (4) the front end flap (5) that is being connected, spring (6) is socketed on the valve rod (4), the surface that it is characterized in that flap (5) is provided with graphite gasket (7), and graphite gasket (7) contacts with the metallic sealing section of valve body (1) inboard.
2, spring loaded check valve according to claim 1, it is characterized in that described graphite gasket (7) outside also is provided with pressing plate (8), the area of pressing plate (8) is less than the area of graphite gasket (7), and flap (5), graphite gasket (7) and pressing plate (8) three are fixed together by screw (9).
3, spring loaded check valve according to claim 1 and 2 is characterized in that described valve body (1) inboard is provided with metal o-ring (10), and metal o-ring (10) is fixed together with valve body (1), and graphite gasket (7) is pressed on the metal o-ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246642 CN2436739Y (en) | 2000-07-29 | 2000-07-29 | Spring type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246642 CN2436739Y (en) | 2000-07-29 | 2000-07-29 | Spring type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2436739Y true CN2436739Y (en) | 2001-06-27 |
Family
ID=33605852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00246642 Expired - Fee Related CN2436739Y (en) | 2000-07-29 | 2000-07-29 | Spring type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2436739Y (en) |
-
2000
- 2000-07-29 CN CN 00246642 patent/CN2436739Y/en not_active Expired - Fee Related
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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 |