CN201322102Y - On-off two-way change-over valve - Google Patents
On-off two-way change-over valve Download PDFInfo
- Publication number
- CN201322102Y CN201322102Y CNU2008201776414U CN200820177641U CN201322102Y CN 201322102 Y CN201322102 Y CN 201322102Y CN U2008201776414 U CNU2008201776414 U CN U2008201776414U CN 200820177641 U CN200820177641 U CN 200820177641U CN 201322102 Y CN201322102 Y CN 201322102Y
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- China
- Prior art keywords
- valve
- plate
- shaft
- seat base
- valve seat
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- Expired - Fee Related
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- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses an on-off two-way change-over valve, which comprises a driving device, a valve body, a valve shaft and a valve plate, wherein the driving device is fixed with the valve body through a bracket, the driving shaft of the driving device is fixed with the valve shaft through threads and an elastic pin shaft, the valve plate fixed on the valve shaft is a taper plate, and the valve body is provided with a valve seat base which is corresponding to the valve plate, an upper press plate is fixed on the valve seat base, and a sealing ring is arranged between the valve seat base and the upper press plate, the sealing ring is provided with taper which is corresponding to the taper plate, the driving device is used to drive a main shaft in the main valve body to move in straight line for opening and closing the valve plate and the sealing ring of the valve seat, and a sealing pair adopts the taper valve plate with polystyrene mosaic sealing. The valve has reasonable and compact structure, is especially used on the fast cut-off for direction change of hot crude gas, and has excellent sealing performance, high temperature resistance, easy cleaning and long service life.
Description
Technical field
The utility model metallurgy industry is used for the equipment of shut off gas, particularly provides a kind of 2/2-way selector valve.
Background technique
Two cut-out equipment are arranged before the burner in the industrial furnace combustion system, the at present general pneumatic preferably eccentric-butterfly-valve of service property (quality), though butterfly valve seal is better, but because the main shaft of butterfly valve frequently alternately is subjected to torsional moment, life-span is shorter, especially be under the situation of hot dirty gas at medium, coal tar oil precipitation, dregs are piled up, some gas makes have more than is needed some months just need maintenance to corrosion of valve or the like or change, and then are badly in need of seeking new alternative.
The model utility content
The purpose of this utility model has been to overcome the defective that existing metallurgy industry is used for shut off gas equipment, a kind of good airproof performance, heatproof height are provided, are easy to clear up, the 2/2-way selector valve of long service life.
To achieve these goals, the technical solution adopted in the utility model is:
The utility model designs the equipment that a kind of gas cuts off.This valve adopts direct-push type cylinder as driving arrangement, direct-push type oil hydraulic cylinder, electric pushrod also can, drive valve plate with straight-line valve shaft, can carry the frequent axial keying of valve plate, adopt its life-span of common used material just can reach keying more than 1,000,000 times.
Valve body is rounded, and a demountable blind flange is arranged on the cylindrical body top, covers and is fixed with the stuffing box that is recessed into cylinder interior.The support upper end is furnished with the end plate that is connected with drive unit.Support is connected the employing bolt with valve body, form closed chamber between the cylindrical shell of assembling back entire bracket and upper end drive unit and lower end, fixes with screw thread and elasticity bearing pin between live axle in the closed chamber and the valve shaft.When drive unit goes wrong, can under the compacted state of gland, unload the transposing of elasticity bearing pin or repair drive unit.
The sealing pair of valve of the present utility model is by by the valve plate of tapering and stud with that the valve seat of band tapering engineering plastics forms.Be called for short the inserted sealing of taper polystyrene.Sealing surface of valve plate tapering angle is that valve seat is made up of valve seat base, sealing panelling and three of top boards about about 13 degree of axial angle-15 degree.There is a pilot hole at the center that the lower end of valve seat base is provided with three gussets, and pilot hole can add lining, and valve seat base inner side surface studs with the engineering plastics of band tapering, adopts more resistant to elevated temperatures polystyrene or carbon fiber mostly.Process the negative and positive groove respectively on circular valve seat and engineering plastics spare and top board, the following and mutual compression fit of valve seat base goes up and the top board compression fit between the Seal plastics, is combined as a whole with bolt.The tapering of Seal working of plastics is consistent with valve seat base and top board tapering, all be and axially be 13-15 degree angle, but the diameter of Seal working of plastics is smaller, leave the surplus of wearing and tearing, high several millimeters of assembling horizontal center of valve plate, back and the horizontal center of valve seat are so that can compensate automatically after frequently opening and closing wearing and tearing for a long time.This inserted Sealing of some big caliber quick shut-off also can be put on the valve plate.Valve plate adopts radioactivity gusset layout and uses screw thread and bearing pin and main shaft adjustment assembling.
Action specification: solenoid valve gets, cylinder piston moves downward and drives valve shaft, valve plate and valve seat closure in the pneumatic actuating device, air-flow is cut off, time about one second of valve plate shut-in time, at valve plate during near 20 millimeters of valve seats, because cylinder has one section buffering that last 20 millimeters speed are slowed down, and has reduced the valve plate impact.The solenoid valve dead electricity, cylinder piston moves upward and drives valve shaft, valve plate and valve seat disengaging in the pneumatic actuating device, and the air-flow of pipeline flows again.
Description of drawings
Fig. 1 is the utility model embodiment integral installation structural representation.
Embodiment
As Fig. 1, the described 2/2-way selector valve of model utility embodiment.
It includes driving arrangement 1, valve body 5, valve shaft 3 and valve plate 6, wherein: fixing between this driving arrangement 1 and the valve body 5 by support 4, fix with screw thread and elasticity bearing pin between this driving arrangement live axle 2 and the valve shaft 3;
Valve plate fixing on this valve shaft 3 is a conical plate 6;
This valve body 5 is provided with and valve plate 6 corresponding valve seat bases 10, is fixed with top board 8 on this valve seat base 10, is provided with seal ring 9 between this valve seat base 10 and the top board 8, and sealing circle 9 is provided with and conical plate 6 corresponding taperings.
The inner edge diameter of sealing circle 9 is less than the inner edge diameter of valve seat base 10.
The lower end of this valve seat base 10 is provided with leading truck 11, offers pilot hole 7 in the middle of this leading truck 11, and this valve shaft 3 passes and is located in the pilot hole 7.
Action specification: driving arrangement 1, cylinder piston moves downward and drives valve shaft 3, valve plate 6 and valve seat base 10 closures in the pneumatic actuating device, air-flow is cut off, time about one second of valve plate shut-in time, at valve plate 6 during near valve seat base 10, because cylinder has one section buffering that last 20 millimeters speed are slowed down, reduced valve plate 6 and impacted; Driving arrangement 1 dead electricity, cylinder piston moves upward and drives valve shaft 3 in the pneumatic actuating device, valve plate 6 breaks away from valve seat base 10, and the air-flow of pipeline flows again.
In addition, sealing pair adopts taper valve plate and the inserted sealing of polystyrene, and this valve arrangement is rationally compact, be suitable for very much the fast shut-off of commutation usefulness in the hot dirty gas, and this valve seal is good, heatproof is high, be easy to clear up long service life.
The above only is preferred embodiment of the present utility model; be not to limit to the utility model with this; therefore; all all and the utility model structure, device, feature etc. are approximate, identical; be allly to replace and modify etc. according to the utility model patent claim being equal to of doing, all should still belong within the scope of patent application protection of the present utility model.
Claims (3)
1, a kind of 2/2-way selector valve, it includes driving arrangement, valve body, valve shaft and valve plate, it is characterized in that: fix by support between this driving arrangement and the valve body, fix with screw thread and elasticity bearing pin between this driving arrangement live axle and the valve shaft;
Valve plate fixing on this valve shaft is a conical plate;
This valve body is provided with and the corresponding valve seat base of valve plate, is fixed with top board on this valve seat base, is provided with seal ring between this valve seat base and the top board, and the sealing circle is provided with and the corresponding tapering of conical plate.
2,2/2-way selector valve as claimed in claim 1 is characterized in that: the inner edge diameter of sealing circle is less than the inner edge diameter of valve seat base.
3,2/2-way selector valve as claimed in claim 1, it is characterized in that: the lower end of this valve seat base is provided with leading truck, offers pilot hole in the middle of this leading truck, and this valve shaft passes and is located in the pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201776414U CN201322102Y (en) | 2008-11-21 | 2008-11-21 | On-off two-way change-over valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201776414U CN201322102Y (en) | 2008-11-21 | 2008-11-21 | On-off two-way change-over valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201322102Y true CN201322102Y (en) | 2009-10-07 |
Family
ID=41159485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201776414U Expired - Fee Related CN201322102Y (en) | 2008-11-21 | 2008-11-21 | On-off two-way change-over valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201322102Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234052A (en) * | 2013-04-26 | 2013-08-07 | 无锡龙山科技有限公司 | Two-position two-way switching valve |
-
2008
- 2008-11-21 CN CNU2008201776414U patent/CN201322102Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234052A (en) * | 2013-04-26 | 2013-08-07 | 无锡龙山科技有限公司 | Two-position two-way switching valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20091221 |