CN101592258A - A kind of air-driven high-temperature resisting bellow cut-off valve - Google Patents
A kind of air-driven high-temperature resisting bellow cut-off valve Download PDFInfo
- Publication number
- CN101592258A CN101592258A CNA2008100383446A CN200810038344A CN101592258A CN 101592258 A CN101592258 A CN 101592258A CN A2008100383446 A CNA2008100383446 A CN A2008100383446A CN 200810038344 A CN200810038344 A CN 200810038344A CN 101592258 A CN101592258 A CN 101592258A
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- valve
- pneumatic transmission
- mechanical connection
- core sleeve
- valve rod
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Abstract
A kind of air-driven high-temperature resisting bellow cut-off valve relates to a kind of air-driven stop valve.Comprise valve body, the active mechanical connection of titanizing Austenitic Stainless Steel bellows arrangement is below the valve rod and between above the flap, the valve rod top fits over mechanical connection in the Pneumatic Transmission core sleeve, the active mechanical connection of square toes and flap under the valve rod, a Pneumatic Transmission core sleeve fits in the Pneumatic Transmission mandrel by Pneumatic Transmission head unit mechanical connection, a Pneumatic Transmission mandrel one changes through a Pneumatic Transmission core sleeve makes the valve rod lifting bar drive the lifting of titanizing Austenitic Stainless Steel bellows arrangement, driving head core sleeve mechanical connection is pressed in the endoporus distribution of valve gap top, and interior distribution presses the driving head mandrel by Pneumatic Transmission core sleeve's lateral pin mechanical connection in the Pneumatic Transmission core sleeve.Dual robust bellows convenient disassembly, sealing is reliable, is applicable on the pipeline of various operating modes such as oil, chemical fertilizer, power industry, cuts off or connect the pipeline medium.
Description
Technical field:
The present invention relates to a kind of air-driven stop valve.
Background technique:
At present, known stop valve, the open-shut device with stop valve are the flaps of plug type, and sealing surface is the plane or the conical surface, the center line moving linearly of flap longshore current body.The movement pattern of valve rod has elevating lever-type, and lifting rotation rod-type is also arranged.Stop valve only is applicable to standard-sized sheet and complete shut-down, does not allow to do to regulate and throttling.Belong to forced seal formula valve,, do not leak with forced seal face so when valve closing, must exert pressure to flap.When medium enters valve by the flap below, the required resistance that overcomes of steering force is the frictional force of valve rod and filler with by the thrust that pressure produced of medium, the power that the force rate of closing valve is opened valve is big, so it is big that the diameter of valve rod is wanted, otherwise the fault of valve rod bending can take place.In recent years, after occurring from self-packing valve, the MEDIA FLOW of stop valve enters valve pocket to just changing by the flap top, and at this moment, under the pressure medium effect, the power of closing valve is little, and it is big to open the power of valve, and the diameter of valve rod can correspondingly reduce.Simultaneously, under the medium effect, the valve of this pattern is also tighter.When stop valve was opened, the Lift of flap was 25% of nominal diameter～30% o'clock, and it is maximum that flow has reached, and the expression valve has reached fully open position.So the fully open position of stop valve should be decided by the stroke of flap.
Summary of the invention:
In order to solve stop valve forced seal formula valve, when valve closing, must exert pressure to flap, with the technical problem that forced seal face does not leak, the invention provides a kind of air-driven high-temperature resisting bellow cut-off valve.
Technological scheme: a kind of air-driven high-temperature resisting bellow cut-off valve, comprise valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the valve body, the active mechanical connection of titanizing Austenitic Stainless Steel bellows arrangement is below the valve rod and between above the flap, valve body contacts the convex-concave place and is embedded with spiral shell inspection compression spring nut mechanical connection by high temperature resistant pad with valve gap, put down in the stuffing box on the valve gap Packing seat filler by Gland with the jack screw on the valve gap by very heavy nut mechanical connection, the valve rod top fits over mechanical connection in the Pneumatic Transmission core sleeve, the active mechanical connection of square toes and flap under the valve rod, a Pneumatic Transmission core sleeve fits in the Pneumatic Transmission mandrel by Pneumatic Transmission head unit mechanical connection, a Pneumatic Transmission mandrel one changes through a Pneumatic Transmission core sleeve makes the valve rod lifting bar drive the lifting of titanizing Austenitic Stainless Steel bellows arrangement, driving head core sleeve mechanical connection is pressed in the endoporus distribution of valve gap top, and interior distribution presses the driving head mandrel by Pneumatic Transmission core sleeve's lateral pin mechanical connection in the Pneumatic Transmission core sleeve.
Technique effect: owing to adopt such scheme, simple in structure, easy for installation, flange connects convenient disassembly, dual robust bellows convenient disassembly, and product structure is reasonable, sealing is reliable, dual robust sylphon seal design guarantees the zero leakage of valve rod.Do not have fluid loss, reduce energy loss, improve safety of factory equipment.Sealing surface weld deposit Co base cemented carbide, wear-resisting, corrosion resistant, good, the long service life of friction resistant performance, bellows titanizing Austenitic Stainless Steel is wear-resisting, corrosion resistant, good, the long service life of friction resistant performance, modified and the surfaces nitrided processing of valve rod has good anti-corruption and friction resistant performance; The indication of valve rod lifting position, more directly perceived, be applicable on the pipeline of various operating modes such as oil, chemical industry, pharmacy, chemical fertilizer, power industry, cut off or connect the pipeline medium.On conduction oil snail boiler tube road engineering, use especially.
Description of drawings:
Fig. 1 is the schematic representation of the embodiment of the invention.
Embodiment:
The present invention is further described below in conjunction with drawings and Examples.
In the drawings: 1. valve body, 2. built-up welding Co base cemented carbide seal ring, 3. titanizing Austenitic Stainless Steel bellows arrangement, 4. valve rod, 5. high temperature resistant pad, 6. bolt, 7. compression spring, 8. nut, 9. jack screw, 10. very heavy nut, 11. valve gap, 12 a Pneumatic Transmissions core sleeve, 13. a Pneumatic Transmissions mandrel, 14. Pneumatic Transmission core sleeve's lateral pin, 15. Pneumatic Transmission head units, 16. Glands, 17. filler, 18. times Packing seats, 19. flaps.
In the example shown in the figure: built-up welding Co base cemented carbide seal ring 2 on the valve body 1, sealing surface weld deposit Co base cemented carbide, wear-resisting, corrosion resistant, the friction resistant performance is good, long service life, titanizing Austenitic Stainless Steel bellows arrangement 3 active mechanical connections are below the valve rod 4 and between above the flap 19, bellows titanizing Austenitic Stainless Steel is wear-resisting, corrosion resistant, the friction resistant performance is good, long service life, valve body 1 contacts the convex-concave place and embeds with bolt 6 compression springs 7 nuts 8 fastening by high temperature resistant pad 5 with valve gap 11, putting down Packing seat 18 in the stuffing box on the valve gap 11 is tightened up by the jack screw 9 on the Gland 16 usefulness valve gaps 11 filler 17 by very heavy nut 10 adjustment, valve rod 4 tops fit in the Pneumatic Transmission core sleeve 12,4 times square toes of valve rod and flap 19 active mechanical connections, a Pneumatic Transmission core sleeve 12 fits in the Pneumatic Transmission mandrel 13 and consolidates it by Pneumatic Transmission head unit 15, a Pneumatic Transmission mandrel 13 1 changes through a Pneumatic Transmission core sleeve 12 makes valve rod 4 lifting bars drive 2 liftings of titanizing Austenitic Stainless Steel bellows arrangement, forced seal face does not leak, driving head core sleeve 12 is pressed in valve gap 11 top endoporus distributions, distribution presses driving head mandrel 13 to consolidate it by Pneumatic Transmission core sleeve's lateral pin 14 in the Pneumatic Transmission core sleeve 12, rotates on valve gap 11.Flange connects convenient disassembly, dual robust bellows convenient disassembly, and product structure is reasonable, sealing is reliable, and dual robust sylphon seal design guarantees the zero leakage of valve rod.
Claims (3)
1. air-driven high-temperature resisting bellow cut-off valve, comprise valve body, it is characterized in that built-up welding Co base cemented carbide seal ring on the valve body, the active mechanical connection of titanizing Austenitic Stainless Steel bellows arrangement is below the valve rod and between above the flap, valve body contacts the convex-concave place and is embedded with bolt spring pad nut mechanical connection by high temperature resistant pad with valve gap, put down in the stuffing box on the valve gap Packing seat filler by Gland with the jack screw on the valve gap by very heavy nut mechanical connection.
2. a kind of air-driven high-temperature resisting bellow cut-off valve according to claim 1, it is characterized in that the valve rod top fits over mechanical connection in the Pneumatic Transmission core sleeve, the active mechanical connection of square toes and flap under the valve rod, a Pneumatic Transmission core sleeve fits in the Pneumatic Transmission mandrel by Pneumatic Transmission head unit mechanical connection, a Pneumatic Transmission mandrel one changes through a Pneumatic Transmission core sleeve makes the valve rod lifting bar drive the lifting of titanizing Austenitic Stainless Steel bellows arrangement
3. a kind of air-driven high-temperature resisting bellow cut-off valve according to claim 1, it is characterized in that valve gap top endoporus distribution pressure driving head core sleeve mechanical connection, interior distribution presses the driving head mandrel by Pneumatic Transmission core sleeve's lateral pin mechanical connection in the Pneumatic Transmission core sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100383446A CN101592258A (en) | 2008-05-30 | 2008-05-30 | A kind of air-driven high-temperature resisting bellow cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100383446A CN101592258A (en) | 2008-05-30 | 2008-05-30 | A kind of air-driven high-temperature resisting bellow cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101592258A true CN101592258A (en) | 2009-12-02 |
Family
ID=41407061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100383446A Pending CN101592258A (en) | 2008-05-30 | 2008-05-30 | A kind of air-driven high-temperature resisting bellow cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101592258A (en) |
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2008
- 2008-05-30 CN CNA2008100383446A patent/CN101592258A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091202 |