CN203671005U - Live-load sealing structure of plug valve - Google Patents
Live-load sealing structure of plug valve Download PDFInfo
- Publication number
- CN203671005U CN203671005U CN201420014499.7U CN201420014499U CN203671005U CN 203671005 U CN203671005 U CN 203671005U CN 201420014499 U CN201420014499 U CN 201420014499U CN 203671005 U CN203671005 U CN 203671005U
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- sealing
- gland
- plate
- upper die
- lower plate
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- 238000007789 sealing Methods 0.000 title claims abstract description 58
- 210000004907 gland Anatomy 0.000 claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model discloses a live-load sealing structure of a plug valve. The live-load sealing structure comprises a plug cock, a valve rod, a valve body, a gland, an upper template, a lower template, a sealing piece, a disc spring, a pressing plate and an adjusting screw. The lower template is located at the upper end of the plug cock and located on the periphery of the valve rod, the upper template is located above the lower template, the sealing piece is located between the upper template and the lower template, between the valve rod and the lower template and between the gland and the valve body at the same time, the disc spring is arranged above the upper template, the pressing plate is arranged above the disc spring, the gland is fixed to the upper end of the valve body, the adjusting screw is screwed in a screw hole in the gland, and the lower end of the adjusting screw abuts against the pressing plate. According to the live-load sealing structure of the plug valve, a sealing pair is additionally arranged compared with the prior art, the live-load structure is additionally arranged, pressure compensation of the sealing pair can be provided, the valve locking phenomenon is prevented.
Description
Technical field
The utility model belongs to stopcock technical field, is specifically related to a kind of stopcock mobile load sealing configuration.
Background technique
Stopcock sealing configuration, in order to reach desirable sealing effect, first will guarantee that sealing pair has enough seal pressures, and the material of Sealing is generally used nonmetallic material, and the decrement of Sealing is 20-30%.In actual use, the corrosion to Sealing due to nonmetallic elastic failure and working medium, common sealing configuration sealing effect after operation some cycles is not too desirable, conventionally need to increase the decrement of Sealing or directly change Sealing.How improving the bulk life time of stopcock sealing configuration and the stability of sealing pair becomes the emphasis of technician's research.
Model utility content
In order to address the above problem, the utility model provides a kind of stopcock mobile load sealing configuration, this stopcock mobile load sealing configuration has not only increased sealing pair one compared with prior art, and increase mobile load structure can provide the pressure compensation of sealing pair and prevent that valve locking phenomenon from producing.
The utility model for the technological scheme that solves its technical problem and adopt is:
A kind of stopcock mobile load sealing configuration, comprise cock, valve rod, valve body, gland, upper die plate, lower plate, Sealing, dish spring, pressing plate and adjustment screw, described lower plate is positioned at described cock upper end and is positioned at described valve rod periphery, described upper die plate is positioned at described lower plate top, described Sealing is positioned at described upper die plate and lower plate between the two simultaneously, described valve rod and lower plate between the two and described gland and valve body between the two, described upper die plate top is provided with dish spring, described dish spring top is provided with pressing plate, described gland is fixed on described valve body upper end, and described pressing plate, dish spring, upper die plate, Sealing and lower plate are all positioned at described gland, described gland is provided with screw, described adjustment screw is combined in described screw, described adjustment screw lower end compresses described pressing plate.
Preferably, the bottom surface of described upper die plate is the inner side surface of a conical-surface type of recessed formation upwards, and the bottom surface of described lower plate raises up and forms the outer side surface of a conical-surface type, and the inner side surface of described upper die plate is relative with the outer side surface of described lower plate.
The beneficial effects of the utility model are: stopcock mobile load sealing configuration of the present utility model comprises cock, valve rod, valve body, gland, upper die plate, lower plate, Sealing, dish spring, pressing plate and adjustment screw, lower plate is positioned at cock upper end and is positioned at valve rod periphery, upper die plate is positioned at lower plate top, Sealing is simultaneously between upper die plate and lower plate, between valve rod and lower plate and between gland and valve body, dish spring is established in upper die plate top, pressing plate is established in dish spring top, gland is fixed on valve body upper end, adjusting screw is combined in the screw on gland, adjust screw lower end and compress pressing plate, when use, first guarantee that Sealing has certain decrement, when using after a period of time, Sealing has certain wearing and tearing in contact position, compressed like this mobile load structure can provide reverse pushing force, increase sealing effect, simultaneously mobile load structure can also prevent to adjust that screw adjusts that tension kills valve and the excessive phenomenon of valve torque that produces, stopcock mobile load sealing configuration of the present utility model is equivalent under the precondition of the Sealing more not renewing, sealing effect be improved greatly, thereby greatly improve the overall sealability of valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
By specific instantiation, embodiment of the present utility model is described below, those skilled in the art can understand advantage of the present utility model and effect easily by content disclosed in the present specification.The utility model also can other different mode be implemented, and, under the category not disclosing departing from the utility model, can give different modifications and change that is.
Embodiment: a kind of stopcock mobile load sealing configuration, comprise cock 1, valve rod 2, valve body 3, gland 4, upper die plate 5, lower plate 6, Sealing 7, dish spring 8, pressing plate 9 and adjustment screw 10, described lower plate 6 is positioned at described cock 1 upper end and is positioned at described valve rod 2 peripheries, described upper die plate 5 is positioned at described lower plate 6 tops, described Sealing 7 is positioned at described upper die plate 5 and lower plate 6 between the two simultaneously, described valve rod 2 and lower plate 6 between the two and described gland 4 and valve body 3 between the two, described upper die plate 5 tops are provided with described dish spring 8, described dish spring 8 tops are provided with described pressing plate 9, described gland 4 is fixed on described valve body 3 upper ends, and described pressing plate, dish spring, upper die plate, Sealing and lower plate are all positioned at described gland, described gland is provided with screw, described adjustment screw 10 is combined in described screw, described adjustment screw 10 lower ends compress described pressing plate 9.
The bottom surface of described upper die plate is the inner side surface of a conical-surface type of recessed formation upwards, and the bottom surface of described lower plate raises up and forms the outer side surface of a conical-surface type, and the inner side surface of described upper die plate is relative with the outer side surface of described lower plate.
Stopcock mobile load sealing configuration of the present utility model in use, first guarantee that Sealing has certain decrement, when using after a period of time, Sealing has certain wearing and tearing in contact position, compressed like this mobile load structure can provide reverse pushing force, increase sealing effect, simultaneously mobile load structure can also prevent to adjust that screw adjusts that tension kills valve and the excessive phenomenon of valve torque that produces.Stopcock mobile load sealing configuration of the present utility model is equivalent under the precondition of the Sealing more not renewing, sealing effect be improved greatly.Thereby greatly improve the overall sealability of valve.
Due to Sealing and valve rod place many again together with sealing pair, so greatly improve the sealing reliability of valve entirety.
Claims (2)
1. a stopcock mobile load sealing configuration, is characterized in that: comprise cock (1), valve rod (2), valve body (3), gland (4), upper die plate (5), lower plate (6), Sealing (7), dish spring (8), pressing plate (9) and adjustment screw (10), described lower plate (6) is positioned at described cock (1) upper end and is positioned at described valve rod (2) periphery, described upper die plate (5) is positioned at described lower plate (6) top, and described Sealing (7) is positioned at described upper die plate (5) and lower plate (6) between the two simultaneously, described valve rod (2) and lower plate (6) between the two and described gland (4) and valve body (3) between the two, described upper die plate (5) top is provided with described dish spring (8), described dish spring (8) top is provided with described pressing plate (9), described gland (4) is fixed on described valve body (3) upper end, and described pressing plate, dish spring, upper die plate, Sealing and lower plate are all positioned at described gland, and described gland is provided with screw, and described adjustment screw (10) is combined in described screw, and described adjustment screw (10) lower end compresses described pressing plate (9).
2. stopcock mobile load sealing configuration as claimed in claim 1, it is characterized in that: the bottom surface of described upper die plate is the inner side surface of a conical-surface type of recessed formation upwards, the bottom surface of described lower plate raises up and forms the outer side surface of a conical-surface type, and the inner side surface of described upper die plate is relative with the outer side surface of described lower plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014499.7U CN203671005U (en) | 2014-01-10 | 2014-01-10 | Live-load sealing structure of plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420014499.7U CN203671005U (en) | 2014-01-10 | 2014-01-10 | Live-load sealing structure of plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203671005U true CN203671005U (en) | 2014-06-25 |
Family
ID=50967299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420014499.7U Expired - Fee Related CN203671005U (en) | 2014-01-10 | 2014-01-10 | Live-load sealing structure of plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203671005U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221830A (en) * | 2015-11-03 | 2016-01-06 | 航天长征化学工程股份有限公司 | Low-leakage ball valve |
| CN105972309A (en) * | 2016-06-23 | 2016-09-28 | 杭州电子科技大学 | Self tracing sealing type lifting plate valve |
| CN111911652A (en) * | 2020-08-03 | 2020-11-10 | 江苏圣泰阀门有限公司 | High-pressure hard sealing ball valve |
-
2014
- 2014-01-10 CN CN201420014499.7U patent/CN203671005U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221830A (en) * | 2015-11-03 | 2016-01-06 | 航天长征化学工程股份有限公司 | Low-leakage ball valve |
| CN105221830B (en) * | 2015-11-03 | 2018-06-19 | 航天长征化学工程股份有限公司 | Low-leakage ball valve |
| CN105972309A (en) * | 2016-06-23 | 2016-09-28 | 杭州电子科技大学 | Self tracing sealing type lifting plate valve |
| CN105972309B (en) * | 2016-06-23 | 2018-07-27 | 杭州电子科技大学 | One kind has follows closed type hoisting type plate valve certainly |
| CN111911652A (en) * | 2020-08-03 | 2020-11-10 | 江苏圣泰阀门有限公司 | High-pressure hard sealing ball valve |
| CN111911652B (en) * | 2020-08-03 | 2021-06-25 | 江苏圣泰阀门有限公司 | High-pressure hard sealing ball 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 |
Granted publication date: 20140625 Termination date: 20160110 |