CN202719183U - Accurate positioning ball valve - Google Patents
Accurate positioning ball valve Download PDFInfo
- Publication number
- CN202719183U CN202719183U CN 201220456985 CN201220456985U CN202719183U CN 202719183 U CN202719183 U CN 202719183U CN 201220456985 CN201220456985 CN 201220456985 CN 201220456985 U CN201220456985 U CN 201220456985U CN 202719183 U CN202719183 U CN 202719183U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- nut
- disc spring
- dish 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
Links
- 239000000945 filler Substances 0.000 claims description 10
- 230000000452 restraining effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract 2
- 210000004907 gland Anatomy 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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- Taps Or Cocks (AREA)
Abstract
An accurate positioning ball valve comprises a valve body, a valve clack and a valve rod, wherein the valve clack is arranged inside the valve body, the valve rod is connected with the valve clack, padding is filled between the valve rod and the inner wall of the valve body, and a disc spring is arranged on the tail portion of the valve rod. A sealing ring is arranged between the disc spring and the padding, the valve rod which is arranged on the disc spring is connected with a nut in a threaded mode, and the nut tightly presses the disc spring to enable the disc spring to tightly press the sealing ring. The valve rod only bears the pressing force of the single nut, and therefore the valve rod can be enabled to avoid the longitudinal skewing, and a valve switch can be accurately located. Even if the longitudinal skewing of the valve rod occurs in the process of operation, a compensator structure composed by the nut and the disc spring can compensate in time, and the longitudinal skewing of the valve rod can be avoided.
Description
Technical field
The utility model relates to a kind of air door, particularly a kind of ball valve.
Background technique
On the market platform ball valve great majority adopt the gland forms to compress fillers, because the difference of gland its bolt pretightening in installation process easily causes the valve rod off center, cause valve contact in use easily to occur between gland and the valve rod and produce than high pulling torque and might occur killing phenomenon and make valve switch motionless, cause very big hidden danger.
Summary of the invention
For the deficiencies in the prior art, problem to be solved in the utility model provides more accurately ball valve of a kind of location.
The utility model is realized in the following way for this reason: a kind of precise positioning ball valve, comprise valve body, flap and valve rod, flap places in the valve body, valve rod is connected with flap, be filled with filler between valve rod and the valve interior wall, described valve rod afterbody is provided with the dish spring, is provided with seal ring between dish spring and the filler, be positioned at the dish spring top nut that has been threaded on the valve rod, nut presses the dish spring makes its compression seal ring.
In the utility model, nut presses the dish spring makes its compression seal ring, and then compression filler, make valve rod only be subject to the impacting force of nut, thereby can not make valve rod produce vertical misalignment, valve switch is located can be accurate, even vertical misalignment appears in valve rod in operating process, the dish spring can in time compensate, and avoids valve rod to depart from the center.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is mechanism's sectional view of the present utility model.
Embodiment
As shown in the figure, this precise positioning ball valve, comprise valve body 1, flap 2 and valve rod 3, flap 2 places in the valve body 1, valve body 1 is provided with the mounting hole 10 that plugs for valve rod 3, and mounting hole 10 is provided with restraining groove near flap 2 one ends, and restraining groove 9 diameters are greater than mounting hole 10 diameters, valve rod 3 heads are provided with limited ring 8, valve rod 3 passes mounting hole 10, and limited ring 8 places in the restraining groove 9, and valve rod 3 is connected with flap 2, be filled with filler 4 between valve rod 3 and valve body 1 inwall, valve rod 3 afterbodys are provided with dish spring 6, are provided with seal ring 7 between dish spring 6 and the filler 4, are positioned at the dish spring 6 tops nut 5 that has been threaded on the valve rod 1, nut 5 presses dish spring 6 makes its compression seal ring 7, and then compresses filler.In the present embodiment, nut 5, dish spring 6 and seal ring 7 are enclosed within on the valve rod 3 successively, and nut 5 is threaded with valve rod 3, and screw nut 5 and make it press dish spring 6, dish spring 6 press seal rings 7, thus compress filler 4.In this structure, valve rod 3 is spacing in valve body 1 by limited ring 8,3 impacting forces that are subject to nut 5 of valve rod, can not make valve rod 3 produce vertical misalignment, valve switch is located can be accurate, even vertical misalignment appears in valve rod in operating process, dish spring 6 can in time compensate, and avoids valve rod 3 to depart from the center.
Claims (2)
1. precise positioning ball valve, comprise valve body, flap and valve rod, flap places in the valve body, valve rod is connected with flap, be filled with filler between valve rod and the valve interior wall, it is characterized in that: described valve rod afterbody is provided with the dish spring, is provided with seal ring between dish spring and the filler, be positioned at the dish spring top nut that has been threaded on the valve rod, nut presses the dish spring makes its compression seal ring.
2. precise positioning ball valve according to claim 1, it is characterized in that: described valve body is provided with the mounting hole that plugs for valve rod, mounting hole is provided with restraining groove near flap one end, the restraining groove diameter is greater than the mounting hole diameter, the valve rod head is provided with limited ring, valve rod passes mounting hole, and limited ring places in the restraining groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456985 CN202719183U (en) | 2012-09-10 | 2012-09-10 | Accurate positioning ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456985 CN202719183U (en) | 2012-09-10 | 2012-09-10 | Accurate positioning ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719183U true CN202719183U (en) | 2013-02-06 |
Family
ID=47621007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220456985 Expired - Fee Related CN202719183U (en) | 2012-09-10 | 2012-09-10 | Accurate positioning ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470803A (en) * | 2013-09-23 | 2013-12-25 | 清华大学 | Electric ball valve applied to high-temperature gas cooled reactor |
-
2012
- 2012-09-10 CN CN 201220456985 patent/CN202719183U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470803A (en) * | 2013-09-23 | 2013-12-25 | 清华大学 | Electric ball valve applied to high-temperature gas cooled reactor |
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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: 20130206 Termination date: 20160910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |