CN201902584U - Flat gate valve - Google Patents
Flat gate valve Download PDFInfo
- Publication number
- CN201902584U CN201902584U CN2010206806837U CN201020680683U CN201902584U CN 201902584 U CN201902584 U CN 201902584U CN 2010206806837 U CN2010206806837 U CN 2010206806837U CN 201020680683 U CN201020680683 U CN 201020680683U CN 201902584 U CN201902584 U CN 201902584U
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- CN
- China
- Prior art keywords
- valve
- gate
- valve stem
- valve seat
- seat
- 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 flat gate valve, which comprises a valve body, a valve seat, a valve stem, a gate and a hand wheel, wherein one end of the valve stem is connected with the hand wheel through a valve stem nut, the other end of the valve stem is connected with the gate, the valve seat is arranged between the gate and the valve body, a sealing sleeve is arranged outside the valve stem and is connected with the valve body, and a valve stem cover is arranged on the hand wheel. The flat gate valve is characterized in that a thrust bearing is arranged between the valve stem nut and the sealing sleeve; a wavy spring is arranged between the valve seat and the valve body; and an observation window is arranged on the valve stem cover. Compared with the prior art, the flat gate valve has the beneficial effects that: 1) the thrust bearing can bear loads when the valve is opened and closed, the switching torque is small, and the valve is light, convenient and flexible to operate under the situation of high-pressure loads; 2) the position of the valve stem is obvious, and the opened state and the closed state of the valve can be judged very easily; and 3) since the wavy spring with high return performance is installed between the valve body and the valve seat, the valve seat is enabled to have pretightening force and the sealing performance of the valve seat and the gate is kept to be good under low pressure.
Description
Technical field
The utility model relates to the manually-operated gate field, relates in particular to a kind of plate valve.
Background technique
In the oil gas well drilling process, the drilling fluid in the pit shaft will make the balance between quiet column pressure of drilling fluid and the strata pressure be destroyed in a single day by dirt that formation fluid is invaded, and causes taking place overflow and well kick.Under the situation that the drilling fluid normal circulation can't be carried out, must utilize kill manifold drilling fluid charge in the well, at this moment need on kill manifold, to connect high-pressure service pump and make drilling fluid enter pit shaft through one-way valve.When shunting in a well entirely with full envelope valve plate mouthful, toward pit shaft in, irritate weighted mud by kill manifold by force, the enforcement kill job.Plate valve is the main switch part that the medium circulation was opened and blocked to kill manifold, manually-operable is extremely required great effort under the high-voltage load situation, valve rod does not have distinguishing mark in the opening and closing position, is not easy to judge valve state, leaks easily when low pressure between valve seat and the flashboard.
Summary of the invention
The purpose of this utility model provides a kind of plate valve, overcomes the deficiencies in the prior art, makes rapid operation under the high-voltage load situation, can judge the valve switch state at an easy rate, increases the contact force between valve seat and the flashboard, prevents low-pressure leak.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of plate valve, comprise valve body, valve seat, valve rod, flashboard, handwheel, valve rod one end links to each other with handwheel by Stem Mut, the valve rod the other end is connected with flashboard, is provided with valve seat between flashboard and the valve body, and Stem Mut is provided with stuffing box gland outward, stuffing box gland is connected with valve body, handwheel is provided with valve rod cover, it is characterized in that, is provided with thrust-bearing between described Stem Mut and the stuffing box gland.Be provided with wavy spring between described valve seat and the valve body.Described valve rod cover is provided with form.
Compared with prior art, the beneficial effects of the utility model are: 1) thrust-bearing can bear the load of valve opening and closing, and switch moment is little, operates light and flexible under the high-voltage load situation; 2) stem position is obvious, can judge the valve switch state at an easy rate; 3) valve body and valve base chamber are equipped with the high wavy spring of recoverability, make valve seat have pretightening force, thereby make valve seat and flashboard still keep excellent sealing performance when low-pressure.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1-valve body 2-valve seat 3-valve rod 4-flashboard 5-handwheel 6-Stem Mut 7-stuffing box gland 8-valve rod cover 9-thrust ball bearing 10-wavy spring 11-form
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
See Fig. 1, it is a kind of plate valve structural representation of the utility model, comprise valve body 1, valve seat 2, valve rod 3, flashboard 4, handwheel 5, valve rod 3 one ends link to each other with handwheel 5 by Stem Mut 6, and valve rod 3 the other ends are connected with flashboard 4, be provided with valve seat 2 between flashboard 4 and valve 1 body, be provided with stuffing box gland 7 outside the Stem Mut 6, stuffing box gland 7 is connected with valve body 1, and handwheel 5 is provided with valve rod cover 8, be provided with thrust ball bearing 9 between described Stem Mut 6 and the stuffing box gland 7, under the high-voltage load situation, operate light and flexible.
Be provided with wavy spring 10 between described valve seat 2 and the valve body 1, make valve seat have pretightening force, thereby make valve seat 2 and flashboard 4 when low-pressure, still keep excellent sealing performance.Described valve rod cover 8 is provided with form 11, can judge the valve switch state at an easy rate.
Claims (3)
1. plate valve, comprise valve body, valve seat, valve rod, flashboard, handwheel, valve rod one end links to each other with handwheel by Stem Mut, the valve rod the other end is connected with flashboard, is provided with valve seat between flashboard and the valve body, and Stem Mut is provided with stuffing box gland outward, stuffing box gland is connected with valve body, handwheel is provided with valve rod cover, it is characterized in that, is provided with thrust-bearing between described Stem Mut and the stuffing box gland.
2. a kind of plate valve according to claim 1 is characterized in that, is provided with wavy spring between described valve seat and the valve body.
3. a kind of plate valve according to claim 1 and 2 is characterized in that described valve rod cover is provided with form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206806837U CN201902584U (en) | 2010-12-25 | 2010-12-25 | Flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206806837U CN201902584U (en) | 2010-12-25 | 2010-12-25 | Flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902584U true CN201902584U (en) | 2011-07-20 |
Family
ID=44273177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206806837U Expired - Fee Related CN201902584U (en) | 2010-12-25 | 2010-12-25 | Flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433434A (en) * | 2013-09-02 | 2013-12-11 | 山东墨龙石油机械股份有限公司 | Method for casting valve body of flat gate valve |
| CN103470794A (en) * | 2013-09-13 | 2013-12-25 | 吴江市东吴机械有限责任公司 | Inlet-outlet double-linkage switching valve |
-
2010
- 2010-12-25 CN CN2010206806837U patent/CN201902584U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433434A (en) * | 2013-09-02 | 2013-12-11 | 山东墨龙石油机械股份有限公司 | Method for casting valve body of flat gate valve |
| CN103433434B (en) * | 2013-09-02 | 2015-11-18 | 山东墨龙石油机械股份有限公司 | The casting method of valve body of flat gate valve |
| CN103470794A (en) * | 2013-09-13 | 2013-12-25 | 吴江市东吴机械有限责任公司 | Inlet-outlet double-linkage switching valve |
| CN103470794B (en) * | 2013-09-13 | 2016-06-22 | 吴江市东吴机械有限责任公司 | Import and export double linkage changeover valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20181225 |