CN204437306U - With the High Pressure Difference stop valve of device for filtering impurities - Google Patents
With the High Pressure Difference stop valve of device for filtering impurities Download PDFInfo
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- CN204437306U CN204437306U CN201520011327.9U CN201520011327U CN204437306U CN 204437306 U CN204437306 U CN 204437306U CN 201520011327 U CN201520011327 U CN 201520011327U CN 204437306 U CN204437306 U CN 204437306U
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- valve
- spool
- medium flow
- decompression
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Abstract
With the High Pressure Difference stop valve of device for filtering impurities, relate to the valve field of universal machine, comprise valve body, valve seat, spool, valve rod, handwheel, filler, the Gland with valve pocket, valve body also arranges medium flow channel and medium flow pass, decompression current-sharing sleeve is nested with outside spool, the bottom of decompression current-sharing sleeve arranges several equal openings, the lower end of decompression current-sharing sleeve contact with valve seat arrange, upper end contacts with filler and arranges, and is nested with filter screen in the periphery cooperation of the current-sharing sleeve that reduces pressure; During work, medium enters valve pocket by medium flow channel, enters valve seat after filtration, then flowed out by medium flow pass after net filtration, the decompression of decompression current-sharing sleeve.Due to the intensive uniform aperture of filter screen cylindrical, when such impurity particle diameter is greater than aperture of filter screen, spool position will do not entered by filter screen, effectively can control large granular impurity and enter valve seat or spool cylindrical side, prevent the stuck spool of impurity or damage sealing surface.
Description
Technical field
The utility model relates to the valve field of universal machine, for heat power plant boiler system to empty steam discharge.
Background technique
At station boiler and steam turbine system, a large amount of stop valve is installed, these valves are the key elements controlling each subsidiary engine water of condensation discharge of boiler steam turbine system, because when installing, boiler internal punching does not wash clean, impurity is usually had to be mixed into internal system, usually valve internal is entered during the discharge of water of condensation saturation water, stuck when causing valve spool of valve to move, cannot switch motion; Or impurity enters, and valve seat location causes sealing surface of seat to weigh wounded, plucking, leak in final appearance, valve cannot be closed.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of High Pressure Difference stop valve of the band device for filtering impurities increased the service life.
The purpose of this utility model is achieved in that the High Pressure Difference stop valve of band device for filtering impurities, comprise the valve body with valve pocket, valve seat, spool, valve rod and handwheel, valve body also arranges the medium flow channel be connected with valve pocket and medium flow pass, the threaded upper ends connection bracket of valve body, described valve seat is arranged in valve pocket, between valve seat and valve body, Sealing is set, the lower end of described valve rod to be arranged in valve pocket and to connect spool, the upper end of valve rod passes valve body and is connected handwheel with after support, between valve rod and valve body, filler is set, the upper end of filler arranges Gland, Gland is connected by swing bolt with described support, decompression current-sharing sleeve is nested with outside described spool, the bottom of decompression current-sharing sleeve arranges several equal openings, the lower end of decompression current-sharing sleeve contacts with valve seat and arranges, upper end contacts with filler and arranges, coordinate in the periphery of decompression current-sharing sleeve and be nested with filter screen, during work, medium enters valve pocket by medium flow channel, enters valve seat after filtration, then flowed out by medium flow pass after net filtration, the decompression of decompression current-sharing sleeve.
During work, medium enters in valve pocket by the medium flow channel of valve body, filter screen is arranged at decompression current-sharing excircle of sleeve position, be enclosed within its cylindrical by decompression current-sharing sleeve lower end, due to the intensive uniform aperture of filter screen cylindrical, when such impurity particle diameter is greater than aperture of filter screen, spool position will do not entered by filter screen, effectively can control large granular impurity and enter valve seat or spool cylindrical side, prevent the stuck spool of impurity or damage sealing surface.For the impurity being less than aperture of filter screen, because it is less, be not easily deposited on sealing surface, even if therefore exist, the damage for sealing surface can be less.Its stuck misgivings for spool can not considered equally.
This valve event process is as follows, rotates counterclockwise handwheel, and valve rod upwards rises, and band movable valve plug moves, valve open.Rotate clockwise handwheel, valve rod moves down, and band movable valve plug moves down, when spool contacts with valve seat, and valve closing.Filter screen is close to decompression current-sharing excircle of sleeve, larger impurity is all effectively filtered in valve pocket outside, and such available protecting valve sealing face, prevents spool stuck by impurity simultaneously.Unclamp swing bolt during maintenance, oppositely screw out support, make it depart from valve body, derive the assembly such as spool and decompression current-sharing sleeve, i.e. capable of washing or replacing filter screen.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the structural representation of decompression current-sharing sleeve.
Fig. 3 is the worm's eye view of Fig. 2.
Fig. 4 is the unfolded drawing of Fig. 2.
Fig. 5 is the structural representation of filter screen.
Embodiment
As shown in Figure 1, the High Pressure Difference stop valve of band device for filtering impurities mainly comprises valve body 1, valve seat 3, spool 5, valve rod 6 and the handwheel 11 with valve pocket 12, and valve body 1 also arranges the medium flow channel 13 be connected with valve pocket 12 and medium flow pass 14.
The threaded upper ends connection bracket 10 of valve body 1, Sealing 2, valve seat 3, decompression current-sharing sleeve 7, filler 8 is set gradually from the bottom to top in valve pocket 12, in the upper end of filler 8, Gland 15 is set, Gland 15 is connected by swing bolt 9 with support 10, by Gland 15, Sealing 2, valve seat 3, decompression current-sharing sleeve 7, filler 8 are compressed, the bottom of decompression current-sharing sleeve 7 arranges several equal opening 7-1(as shown in Figure 2,3, 4), coordinate in the periphery of decompression current-sharing sleeve 7 and be nested with filter screen 4, the structure of filter screen 4 as shown in Figure 5.The lower end of valve rod 6 to be arranged in decompression current-sharing sleeve 7 and to connect spool 5, connects handwheel 11 after the upper end of valve rod 6 passes support 10.
During work, medium enters valve pocket 12 by medium flow channel 13, filters, enters valve seat 3 after the current-sharing sleeve 7 that reduces pressure decompression, then to be flowed out by medium flow pass 14 through filter screen 4.
Claims (1)
1. be with the High Pressure Difference stop valve of device for filtering impurities, comprise the valve body with valve pocket, valve seat, spool, valve rod and handwheel, valve body also arranges the medium flow channel be connected with valve pocket and medium flow pass, the threaded upper ends connection bracket of valve body, described valve seat is arranged in valve pocket, between valve seat and valve body, Sealing is set, the lower end of described valve rod to be arranged in valve pocket and to connect spool, the upper end of valve rod passes valve body and is connected handwheel with after support, between valve rod and valve body, filler is set, the upper end of filler arranges Gland, Gland is connected by swing bolt with described support, it is characterized in that: outside described spool, be nested with decompression current-sharing sleeve, the bottom of decompression current-sharing sleeve arranges several equal openings, the lower end of decompression current-sharing sleeve contacts with valve seat and arranges, upper end contacts with filler and arranges, coordinate in the periphery of decompression current-sharing sleeve and be nested with filter screen, during work, medium enters valve pocket by medium flow channel, enters valve seat after filtration, then flowed out by medium flow pass after net filtration, the decompression of decompression current-sharing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520011327.9U CN204437306U (en) | 2015-01-08 | 2015-01-08 | With the High Pressure Difference stop valve of device for filtering impurities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520011327.9U CN204437306U (en) | 2015-01-08 | 2015-01-08 | With the High Pressure Difference stop valve of device for filtering impurities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204437306U true CN204437306U (en) | 2015-07-01 |
Family
ID=53605175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520011327.9U Active CN204437306U (en) | 2015-01-08 | 2015-01-08 | With the High Pressure Difference stop valve of device for filtering impurities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204437306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799526A (en) * | 2018-05-22 | 2018-11-13 | 浙江威立雅阀门有限公司 | A kind of linear scale Multifunctional balance valve |
-
2015
- 2015-01-08 CN CN201520011327.9U patent/CN204437306U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799526A (en) * | 2018-05-22 | 2018-11-13 | 浙江威立雅阀门有限公司 | A kind of linear scale Multifunctional balance valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |