CN201531637U - High-pressure hard seal ball valve - Google Patents
High-pressure hard seal ball valve Download PDFInfo
- Publication number
- CN201531637U CN201531637U CN2009202011753U CN200920201175U CN201531637U CN 201531637 U CN201531637 U CN 201531637U CN 2009202011753 U CN2009202011753 U CN 2009202011753U CN 200920201175 U CN200920201175 U CN 200920201175U CN 201531637 U CN201531637 U CN 201531637U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- hard seal
- pressure hard
- seal 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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Abstract
The utility model relates to a high-pressure hard seal ball valve which comprises a valve body, a valve cover, a valve rod and a ball core, wherein the valve cover is fixed on the lateral portion of the valve body, the ball core connected with the valve rod is arranged in the valve body, abrasion-proof layers are built-up on the valve rod and the periphery on the upper portion of the connecting portion of the ball core, a wall of the valve rod is provided with a platform which extends around, the abrasion-proof layer is continuously built-up on the platform, a thrust washer is sleeved outside the valve rod, and an abrasion-proof protective layer is sprayed on the matching surface of the thrust washer, which is attached with the abrasion-proof layer on the platform. The high-pressure hard seal ball valve overcomes the defects in the prior art that the valve rod of a normal high pressure hard seal ball valve has worse high temperature abrasion-proof performance, and is easy to be clutched by the valve body and the thrust bearing, with the design, the high temperature abrasion-proof performance of the valve rod in the high pressure hard seal ball valve is greatly improved, and the valve rod is not easy to be clutched by the valve body and the thrust washer, and the high-pressure hard seal ball valve has the advantages of simple structure, small friction coefficient, stable work and long service span.
Description
Technical field
The utility model relates to a kind of high pressure hard seal ball valve.
Background technique
The ball valve genus blocks the class valve, is mainly used in the MEDIA FLOW of connecting or blocking in the pipeline, and the sealing principle of ball valve is to rely on two ends, left and right sides valve seat to contact with the ball core to obtain sealability.The rotation of ball core will be driven by valve rod, and the hardness of valve rod is generally not high in the conventional high-tension hard seal ball valve, directly influence the wear resistance at elevated temperature of valve rod, simultaneously, above-mentioned valve rod in use also occurs being had a strong impact on the reliability and the working life of high pressure hard seal ball valve work by the situation of valve body and thrust washer interlock easily.
Summary of the invention
Relatively poor and for the wear resistance at elevated temperature that overcomes the valve rod of common high pressure hard seal ball valve in the prior art easily by the problem of valve body and thrust washer interlock, the utility model provides a kind of high pressure hard seal ball valve, simple in structure, the reliable operation of this high pressure hard seal ball valve, strong, the long service life of the wear-resisting property of valve rod.
The technological scheme that its technical problem that solves the utility model adopts is: comprise valve body, valve gap, valve rod and ball core, valve gap is fixed on the valve body sidepiece, the ball core that links to each other with valve rod is arranged in the valve body, build-up wear-resistant layer on the valve rod side face of valve rod and ball core joint top.
The valve rod wall is provided with the platform that extends to all around, and the continuous built-up welding of wearing layer is to platform.
Spraying abrasion-proof protective coating on the fitting surface that wearing layer pastes mutually on the valve rod overcoat thrust washer, thrust washer and platform.
Valve rod connects and composes by upper and lower two sections.
The utility model has greatly improved the wear resistance at elevated temperature of valve rod in the high pressure hard seal ball valve by above-mentioned specific design, and is difficult for by valve body and thrust washer interlock, has the advantage of simple in structure, reliable operation, long service life.
Description of drawings
Below in conjunction with drawings and Examples detailed content of the present utility model is described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of valve rod in the utility model;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the structural representation of thrust washer in the utility model.
Embodiment
As shown in the figure, the utility model comprises valve body 1, valve gap 2, valve rod 3 and ball core 4, valve gap 2 is fixed on the valve body sidepiece, the ball core 3 that links to each other with valve rod 1 is arranged in the valve body 1, build-up wear-resistant layer 5 on valve rod 3 side faces of valve rod 3 and ball core 4 joints top, wearing layer 5 can adopt cobalt base alloy (taking charge of too upright Stellite) material, and THICKNESS CONTROL is about 0.5mm.Valve rod 3 walls are provided with the platform 6 that extends to all around, wearing layer 5 continuous built-up welding are to platform 6, socket thrust washer 7 outside valve rod 3, spraying abrasion-proof protective coating 8 on the fitting surface that wearing layer 5 pastes mutually on thrust washer 7 and the platform 6, wear Protection layer 8 also can adopt cobalt base alloy (taking charge of too upright Stellite) material, THICKNESS CONTROL is about 0.2mm, and this structure has not only improved wear resistance, and has reduced friction factor.During assembling, thrust washer 7 is packed in the valve rod hole of valve body 1, the facing down of spraying abrasion-proof protective coating 8, the valve body 1 of again valve rod 3 being packed into gets final product.Valve rod 3 connects and composes by upper and lower two sections, and its Placement can be that square hole and square tenon cooperate.Above-described embodiment only is that the preferred implementation to the utility model high pressure hard seal ball valve is described; be not that design and scope to model utility limits; under the prerequisite that does not break away from the utility model scheme; various external form modification and improvement that those skilled in the art make the technical solution of the utility model all should fall into the protection domain of the utility model high pressure hard seal ball valve.
Claims (4)
1. high pressure hard seal ball valve, comprise valve body, valve gap, valve rod and ball core, valve gap is fixed on the valve body sidepiece, and the ball core that links to each other with valve rod is arranged in the valve body, it is characterized in that build-up wear-resistant layer (5) on valve rod (3) side face of valve rod (3) and ball core (4) joint top.
2. a kind of high pressure hard seal ball valve according to claim 1 is characterized in that valve rod (3) wall is provided with the platform (6) that extends to all around, and the continuous built-up welding of wearing layer (5) is to platform (6).
3. a kind of high pressure hard seal ball valve according to claim 2 is characterized in that valve rod (3) overcoat thrust washer (7), and thrust washer (7) and platform (6) are gone up spraying abrasion-proof protective coating (8) on the fitting surface that wearing layer (5) pastes mutually.
4. a kind of high pressure hard seal ball valve according to claim 3 is characterized in that valve rod (3) connects and composes by upper and lower two sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202011753U CN201531637U (en) | 2009-11-24 | 2009-11-24 | High-pressure hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202011753U CN201531637U (en) | 2009-11-24 | 2009-11-24 | High-pressure hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531637U true CN201531637U (en) | 2010-07-21 |
Family
ID=42527041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202011753U Expired - Fee Related CN201531637U (en) | 2009-11-24 | 2009-11-24 | High-pressure hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317814A (en) * | 2014-08-04 | 2016-02-10 | 许炎章 | Gasket |
-
2009
- 2009-11-24 CN CN2009202011753U patent/CN201531637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317814A (en) * | 2014-08-04 | 2016-02-10 | 许炎章 | Gasket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20151124 |