CN2512960Y - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN2512960Y CN2512960Y CN 01266681 CN01266681U CN2512960Y CN 2512960 Y CN2512960 Y CN 2512960Y CN 01266681 CN01266681 CN 01266681 CN 01266681 U CN01266681 U CN 01266681U CN 2512960 Y CN2512960 Y CN 2512960Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- seal ring
- valve body
- combined seal
- 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
Links
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000007789 sealing Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 2
- 238000005056 compaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Taps Or Cocks (AREA)
- Details Of Valves (AREA)
Abstract
The utility model relates to a valve, in particular to a ball valve. The lower end of the valve rod for the ball valve is provided with a protruding shoulder, and the lower end of the installation hole for the valve body is provided with a step corresponding with the protruding shoulder. A bowl shape sealing ring is arranged between the step and the protruding shoulder. The upper end of the installation hole for the valve body is a sinking hole. The periphery of the valve rod in the sinking hole is sleeved with an upper combination sealing ring and a lower combination sealing ring, and the upper combination sealing ring and the valve rod are in the interference fit. The upper and lower combination sealing rings are cooperated through the cone surface. An adjusting press cover is positioned above the upper combination sealing ring, and the adjusting press cover and the valve rod are cooperated through the valve rod. The utility model has good sealing effect, which is uneasy for leaking, and has low requirement for manufacturing precision.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of ball valve.
Background technique
Common ball valve all is made up of the valve body that has joint and the valve rod and the spherical valve core that are installed in the valve body, because the structure that is sealed and matched between the valve rod of existing ball valve and the valve body is unreasonable, not only be difficult to solve leakage problems, also higher to the accuracy of manufacturing requirement of product simultaneously, increased manufacture cost.
Summary of the invention
Technical problem to be solved in the utility model is, a kind of good sealing effect, easy to leak not are provided, and accuracy of manufacturing is required lower ball valve.
The spherical valve core that ball valve of the present utility model includes a valve body and is installed in the valve rod in the valve body and driven by valve rod, valve rod matches with mounting hole on the valve body, a convex shoulder is arranged in the valve rod lower end, have and the corresponding step of above-mentioned convex shoulder in the mounting hole lower end of valve body, a bowl ring is installed between step and convex shoulder, the mounting hole upper end of valve body is a counterbore, valve rod periphery in the counterbore is with one and goes up combined seal ring and a following combined seal ring, last combined seal ring and valve rod are interference fit, on, pass through cone match between the following combined seal ring, above last combined seal ring, also have one and regulate gland, regulate gland and valve rod and pass through screw-thread fit.Screw the adjusting gland, just can realize the sealing of valve rod and valve body by the upper and lower combined seal ring of bowl ring and a group.For further improving sealing effect, also can have a circular groove at the valve rod middle part, " O " shape seal ring is installed in circular groove.
The utility model is owing to adopted bowl ring in stem bottom, make the compaction direction of seal ring consistent with the pressure direction of valve body inner fluid, strengthened sealing effect, and the structure of upper and lower combined seal ring and " O " shape seal ring has further guaranteed sealing, has reduced seepage.In addition,, directly do not cooperate, thereby reduced requirement, help reducing manufacture cost accuracy of manufacturing with valve body because the adjusted gland is installed on the valve rod.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in the figure, the spherical valve core 3 that valve rod 2 is installed in the valve body 1 of the present utility model and drives by valve rod, valve rod 2 matches with mounting hole 4 on the valve body, a convex shoulder 5 is arranged in the valve rod lower end, have one and convex shoulder 5 corresponding steps 6 simultaneously in mounting hole 4 lower ends of valve body, a bowl ring 7 is installed between step 6 and convex shoulder 5, mounting hole 4 upper ends of valve body are a counterbore 8, valve rod periphery in the counterbore is with a last combined seal ring 9 and following combined seal ring 10 that cooperatively interacts by the conical surface, last combined seal ring 9 is an interference fit with valve rod 2, above last combined seal ring, also have one and regulate gland 11, regulate gland 11 and pass through screw-thread fit with valve rod 2.During assembling, be screwed down and regulate gland 11, just can when compressing upper and lower combined seal ring, strain bowl ring 7, realize the sealing between valve rod and the valve body.For further improving sealing effect, also have a circular groove 12 at valve rod 2 middle parts, " O " shape seal ring 13 is installed in circular groove.
Claims (2)
1, a kind of ball valve, the spherical valve core (3) that it includes a valve body (1) and is installed in the valve rod (2) in the valve body and is driven by valve rod, valve rod (2) matches with mounting hole (4) on the valve body, it is characterized in that: a convex shoulder (5) is arranged in the valve rod lower end, mounting hole (4) lower end at valve body has and the corresponding step of above-mentioned convex shoulder (5) (6), between step (6) and convex shoulder (5), a bowl ring (7) is installed, the mounting hole of valve body (4) upper end is a counterbore (8), valve rod periphery in the counterbore is with one and goes up a combined seal ring (9) and a following combined seal ring (10), last combined seal ring (9) is an interference fit with valve rod, on, following combined seal ring (9,10) pass through cone match between, also have one to regulate gland (11) in last combined seal ring (9) top, regulate gland and valve rod (2) and pass through screw-thread fit.
2, ball valve according to claim 1 is characterized in that: have a circular groove (12) at the valve rod middle part, " O " shape seal ring (13) is installed in circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266681 CN2512960Y (en) | 2001-11-16 | 2001-11-16 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01266681 CN2512960Y (en) | 2001-11-16 | 2001-11-16 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512960Y true CN2512960Y (en) | 2002-09-25 |
Family
ID=33673306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01266681 Expired - Fee Related CN2512960Y (en) | 2001-11-16 | 2001-11-16 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512960Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007022721A1 (en) * | 2005-08-23 | 2007-03-01 | Zhejiang China Valve Co., Ltd. | Stem seal |
| WO2010048769A1 (en) * | 2008-10-28 | 2010-05-06 | 浙江华夏阀门有限公司 | Double annular rod shoulder seal and independent double valve rod seal |
| CN101799080B (en) * | 2009-11-09 | 2012-11-14 | 陈广强 | Double-ball rigid-flexible deformation seal valve |
| CN108644403A (en) * | 2018-07-20 | 2018-10-12 | 浙江万龙机械有限公司 | A kind of double sealing structure of plug valve |
-
2001
- 2001-11-16 CN CN 01266681 patent/CN2512960Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007022721A1 (en) * | 2005-08-23 | 2007-03-01 | Zhejiang China Valve Co., Ltd. | Stem seal |
| US8382067B2 (en) | 2005-08-23 | 2013-02-26 | Zhejiang China Valve Co., Ltd | Stem seal |
| WO2010048769A1 (en) * | 2008-10-28 | 2010-05-06 | 浙江华夏阀门有限公司 | Double annular rod shoulder seal and independent double valve rod seal |
| US8439330B2 (en) | 2008-10-28 | 2013-05-14 | Zhejiang China Value Co., Ltd. | Stem shoulder seal with double rings and an assembly of independent dual stem seals |
| CN101799080B (en) * | 2009-11-09 | 2012-11-14 | 陈广强 | Double-ball rigid-flexible deformation seal valve |
| CN108644403A (en) * | 2018-07-20 | 2018-10-12 | 浙江万龙机械有限公司 | A kind of double sealing structure of plug valve |
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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 |