CN2851759Y - Metal hard sealing ball valve for special medium - Google Patents
Metal hard sealing ball valve for special medium Download PDFInfo
- Publication number
- CN2851759Y CN2851759Y CN 200520140295 CN200520140295U CN2851759Y CN 2851759 Y CN2851759 Y CN 2851759Y CN 200520140295 CN200520140295 CN 200520140295 CN 200520140295 U CN200520140295 U CN 200520140295U CN 2851759 Y CN2851759 Y CN 2851759Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- valve seat
- metal hard
- special media
- 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 relates to a ball valve, particularly a metal hard sealing ball valve for special media. The utility model comprises a valve rod, a valve body, a valve seat and a ball body, wherein the valve rod is connected with the ball body which is relatively matched with the valve seat in a rotary seal mode and a scraper device is arranged on the sealing surface of the valve seat. The utility model uses the scraper device on the sealing surface to cause the valve to automatically scrape dirty objects bonded on the surface of the ball body in the opening process so that the metal hard sealing ball valve for special media has the advantages of reliable seal and portable opening and closing.
Description
Technical field
The utility model relates to a kind of ball valve, particularly a kind of special media metal hard-sealing ball valve.
Background technique
Special media normally is used to hard solid particle medium, easily coking, easy medium occasion of pasting with metal hard-sealing ball valve; and after using for a long time; usually can deposit some hard sedimentss on the spherome surface of ball valve; during the spheroid rotation; solid impurity is along with sphere contact seal face in rigid sediments on the sphere or the fluid; thereby scrape the ball sealing surface, cause seal failure.
Summary of the invention
Thereby the purpose of this utility model provides a kind of foul that is bonded on the spherome surface that can strike off automatically and makes the more reliable special media metal hard-sealing ball valve of sealing in opening-closing process.
The purpose of this utility model is achieved by the following technical solution: a kind of special media metal hard-sealing ball valve, include valve rod, valve body, valve seat and spheroid, valve rod and spheroid are connected, relative rotatable being sealed and matched with valve seat of spheroid is characterized in that: be provided with doctor blade device on the sealing surface of valve seat.
The utility model further is set to: be provided with the tip-angled shape structure at the front end that is contacted with medium of the sealing surface of described valve seat and constitute described doctor blade device, can certainly all be provided with the tip-angled shape structure in the front end and back end.
The utility model further is set to: be provided with the spring that valve seat and spheroid are fitted tightly between described valve body and the valve seat, be provided with Sealing on the faying surface of valve body and valve seat.
The utility model further is set to: be provided with Sealing on the circumferential junction plane that valve rod cooperates with valve body.
The beneficial effects of the utility model are: thus utilize doctor blade device on the sealing surface make valve in opening process, can strike off automatically the foul that is bonded on the spherome surface make sealing reliable, open and close light special media metal hard-sealing ball valve.
Description of drawings
Fig. 1 is the novel structural representation of this reality
Fig. 2 is the A place enlarged diagram of Fig. 1
Fig. 3 is the B place enlarged diagram of Fig. 1
Embodiment
Now accompanying drawing is further described the utility model in conjunction with the embodiments, and certain protection domain of the present utility model is not limited to the embodiment in the accompanying drawing.
As shown in Figure 1-Figure 3; a kind of special media metal hard-sealing ball valve of the utility model; include valve body 1; valve seat 2; valve rod 4 and spheroid 3; usually also include operation handwheel 5; drive valve rod 4 by rotary manipulation handwheel 5 and reach spheroid 3 rotations that are connected with valve rod 4; thereby reach the valve switch process; thereby, valve seat 2 and spheroid 3 make sealing more reliable for more being fitted tightly; usually between described valve body 1 and valve seat 2, be provided with the spring 6 that valve seat 2 and spheroid 3 are fitted tightly; and the sealing surface of valve seat 2 (perhaps whole valve seat) adopts hard structure to be with hard solid particle medium so that it can be applicable to; easily coking; easy medium occasion of pasting; and on the sealing surface of valve seat 2, be provided with doctor blade device, make sealing more reliable thereby utilize doctor blade device to make valve in switching process, can strike off the foul that is bonded on the spherome surface automatically.
Be provided with tip-angled shape structure 8 at the front end that is contacted with medium of the sealing surface 21 of described valve seat 2 and constitute described doctor blade device, can certainly all be provided with tip-angled shape structure 8 in the front end and back end.
Cause the inefficacy of valve in order to prevent foul in the medium from entering into spring chamber 10, present embodiment is provided with Sealing 7 on the binding face of valve body 1 and valve seat 2.
In order to prevent that the foul in the medium from entering in the circumferential matching gap of valve rod 4 and valve body 1, avoid increasing the increase cause the valve opening and closing moment of torsion because of coking makes the frictional force between valve rod 4 and the valve body 1, present embodiment also is provided with Sealing 9 on valve rod 4 and circumferential junction plane that valve body 1 cooperates.
Claims (6)
1. a special media metal hard-sealing ball valve includes valve rod, valve body, valve seat and spheroid, and valve rod and spheroid are connected, and relative rotatable being sealed and matched with valve seat of spheroid is characterized in that: be provided with doctor blade device on the sealing surface of valve seat.
2. special media metal hard-sealing ball valve according to claim 1 is characterized in that: be provided with the tip-angled shape structure at the front end that is contacted with medium of the sealing surface of described valve seat and constitute described doctor blade device.
3. special media metal hard-sealing ball valve according to claim 1 is characterized in that: the front and back ends that is contacted with medium at the sealing surface of described valve seat all has the tip-angled shape structure to constitute described doctor blade device.
4. according to claim 1 or 2 or 3 described special media metal hard-sealing ball valves, it is characterized in that: be provided with the spring that valve seat and spheroid are fitted tightly between described valve body and the valve seat, on the faying surface of valve body and valve seat, be provided with Sealing.
5. according to claim 1 or 2 or 3 described special media metal hard-sealing ball valves, it is characterized in that: the circumferential junction plane that cooperates with valve body at valve rod is provided with Sealing.
6. special media metal hard-sealing ball valve according to claim 4 is characterized in that: be provided with Sealing on the circumferential junction plane that valve rod cooperates with valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140295 CN2851759Y (en) | 2005-12-22 | 2005-12-22 | Metal hard sealing ball valve for special medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140295 CN2851759Y (en) | 2005-12-22 | 2005-12-22 | Metal hard sealing ball valve for special medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2851759Y true CN2851759Y (en) | 2006-12-27 |
Family
ID=37585716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520140295 Expired - Lifetime CN2851759Y (en) | 2005-12-22 | 2005-12-22 | Metal hard sealing ball valve for special medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2851759Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915321A (en) * | 2010-08-12 | 2010-12-15 | 太仓优尼泰克精密机械有限公司 | Ball valve |
| CN102840363A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Four-way ball valve used for high-temperature easily-coking medium |
-
2005
- 2005-12-22 CN CN 200520140295 patent/CN2851759Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915321A (en) * | 2010-08-12 | 2010-12-15 | 太仓优尼泰克精密机械有限公司 | Ball valve |
| CN102840363A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Four-way ball valve used for high-temperature easily-coking medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHAODA VALVE GROUP CO., LTD. Free format text: FORMER NAME: ZHEJIANG CHAODA VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Jiangbei Avenue 325105 Zhejiang Oubei town of Yongjia County Patentee after: Chaoda Valve Group Co., Ltd. Address before: Jiangbei Avenue 325105 Zhejiang Oubei town of Yongjia County Patentee before: Zhejiang Chaoda Valve Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20061227 |
|
| EXPY | Termination of patent right or utility model |