CN2205817Y

CN2205817Y - Pneumatic material valve

Info

Publication number: CN2205817Y
Application number: CN 94241252
Authority: CN
Inventors: 李桂华; 赵勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-18
Filing date: 1994-08-18
Publication date: 1995-08-23
Anticipated expiration: 2004-08-18

Abstract

The utility model relates to a pneumatic material valve, which belongs to a valve in a pneumatic conveying device. The utility model is used for changing a conveying flow and a conveying peed in the process of pneumatic granular or powder dust materials conveying. The utility model has a valve rod which is driven by a pneumatic piston to open or close the connecting hole of a material inlet hole which conveys materials to a passage. One end of the passage is a material outlet and the other end is a pressure and air inlet.

Description

Pneumatic material valve

The utility model relates to the valve in the Pneumatic conveyer.Be used for strength conveying granular or dust-like material and change feed flow and speed.For example be used in and reclaim automatic circulation sanding machine, aspects such as bulk cement conveyer.

The valve of using in strength is carried has butterfly valve substantially, changes core valve and gate valve at present.Relatively simple for structure, its manner of execution can be manual, pneumatic, electronic, and in use its function is just opened or closed, thereby can not adjust in the middle of general the use after when design, fixing operational throughput, adjust reluctantly, can utilize handle to adjust aperture, can increase transporting resistance like this, reduce traffic capacity.In mass transport, need to change its flow and speed at present with under the application scenario that reaches new function, also do not have the mass transport valve that is suitable for.For example remove the sanding machine of corrosion at the industrial gold metal surface, it requires area and the thickness of the sand of ejection because of the corrosion of need removing, changes spray volume and the velocity of impact of himself, could use.Existing strength is carried this requirement of valve out of reach.

The purpose of this utility model makes the pneumatic material valve reach light, durable, steady as required, its flow and adjustable-speed, the convenient use.

The purpose of this utility model is to realize by the technical scheme of chatting down.Drive valve rod by the compressed air-driven piston and open or close the connection holes that convey materials is given passage in valve body, characteristics are the passage two ends, and an end is for going out the material mouth, and an end is into to have an air scoop of certain pressure.The unlatching of valve rod can be controlled by pressurized air, reaches flow control, and the air with pressure that passage one end is advanced changes the pressure size and can reach the size of adjusting material flow, makes and uses conveniently freely.

One air flue is set on valve body, towards the piston that is arranged on valve body one end, affixed a valve rod on the piston, piston is moving in the cavity of valve body one end under the compressed-air actuated effect, and the other end of valve body is provided with the connection holes that can be given passage by valve rod osed top plup inlet convey materials.

A coexist end of valve body of the feeding mouth of convey materials and passage, thereby material is short by the distance of valve, little to the wearing and tearing of valve, as long as on structure, design cleverly, guarantee the sealing of this short circuit journey, it is replaceable to be equipped with wear-out part in addition, and be bound to longer the service life of valve than prior art.Therefore through the place valve pocket is set at the plup inlet material, connection holes is formed by an elastomeric material pad, and wrap in the lining, combined seal ring is all used in the connection place of the connection place of lining and passage, valve pocket and valve body, by the dress cylinder end of passage and the valve body combined seal ring jam-packed with combined seal ring, elastomeric material pad, lining, passage and the connection place thereof of valve pocket and cooperation thereof.Elastomeric material removes with valve rod and cooperates the sealing convey materials to give the connection holes of passage, and has sealed the contact surface of valve body and cylinder end.Two combined seal rings have sealed the radial and axial contact surface of valve body and valve pocket, lining and passage, and make passage at the cylinder end internal fixation, have reduced wearing and tearing, reach designing requirement.

At valve body one end of piston is arranged, seal piston with end cap and move cavity, end cap is pressed in spring on the piston, so that piston can in time reset when non-compressed air, the range of piston is by passing end cap, and is fixed on the screw rod adjustment on the regulating handle.This programme reaches adjustment freely, and is easy to use, the purpose that the life-span is long.

With accompanying drawing explanatory note of the present utility model is done further below and replenished.

Description of drawings:

Fig. 1-pneumatic material valve integral structure scheme drawing;

Fig. 2-go out sandpipe and sand inlet A draw bail enlarged drawing;

Fig. 3-Fig. 1 D-D section rotation.

Drawing explanation: 1 regulating handle, 2 screw rods, 3 pads, 4 springs, 5 end caps, 6 scale graduations, 7 calibrated discs, 8 cushion rubbers, 9 seal rings, 10 pistons, 11 valve rods, 12 combined seal rings, 13 valve pockets, 14 rubber pads, 15 linings, 16 combined seal rings, 17 go out sandpipe, 18 bolts, 19 nuts, 20 cylinder ends, 21 valve bodies.

Accompanying drawing is further described its practicality also as typical structure of the present utility model.Have A hole and C hole on valve body 21, the A hole is a material inlet.Present embodiment is to be applied on the sanding machine, and the material of being sent into by the A hole is a sand.Be used on the cement conveyer, the material that A sends in the hole is pulverous cement.The C hole feeds pressurized air, pushes piston 10 to screw rod 2, and screw rod 2 is packed on the regulating handle 1, and turn handle 1, the screw rod 2 length change in size in end cap 5 reaches the stroke size of adjusting piston 10.Also press a spring 4 in end cap 5, it gives 10 1 in piston and the rightabout power of pressurized air, forces it to reset.Scale graduation 6, calibrated disc 7 are fit adjustment handles 1, make piston 10 stroke adjustment accurate.Cushion rubber 8 is to prevent to regulate excessive, prevents that piston and end cap from breaking.Seal ring 9 is piston packing rings.Valve rod 11 is to be connected on the piston 10 with nut 19, and valve pocket 13 such structures are for prolonging the service life of valve, remove and adopt outside the high-intensity high-abrasive material, being designed to exchangeable part.Valve body is the corrosion resistant aluminum alloy material, changes the wear-out part of material process, keeps in-use performance intact.When piston 10 was shifted to screw rod 2, valve rod 11 left hole B, and material flows to hole B, access passage through hole A, valve pocket 13---go out sandpipe 17.Rubber pad 14 adopts polyurethane material, through sulphurization, makes its hardness reach Shao's formula 95 degree, also available plastics, rubber.So both can seal hole B by the rubber pad 14 and the end face of valve rod 11, simultaneously also with valve body 21 and cylinder end 20 both ends of the surface, rubber pad 14, combined seal ring 12,16, lining 14, jam-packed sealing under 18 effects of four bolts.B hole and passage---going out combining of sandpipe 17 is the outer warp that utilizes out sandpipe 17, has not only been guaranteed radially but also by the sealing that guarantees faying face by lining 15 and combined seal ring 16.Simultaneously also using sandpipe 17 is fixed in the cylinder end 20.Passage---go out sandpipe 17 two ends, wherein an end passes to pressurized air, and different use needs to consider to add flow regulating valve from using, and also can add flow counter or the like.The other end is a discharging opening, is used on the sanding machine and can adds different spray guns, or the nozzle of other different use.

So far implement to finish.

Claims

1, drive valve rod by the compressed air-driven piston and open or close the pneumatic material valve that the plup inlet convey materials is given the connection holes of passage, it is characterized in that the passage two ends, an end is for going out the material mouth, and an end is into to have an air scoop of certain pressure.

2, according to the described pneumatic material valve of claim 1, it is characterized in that in valve body, being provided with an air flue, towards the piston that is arranged on valve body one end, affixed valve rod on the piston, the other end of valve body is provided with the connection holes that can be given passage by valve rod osed top plup inlet convey materials, seal piston with end cap and move cavity, and spring is pressed on the piston, the screw rod that passes end cap is fixed on the regulating handle.

3, according to the described pneumatic material valve of claim 2, it is characterized in that through the place valve pocket being set at the plup inlet material, connection holes is formed by an elastomeric material, and wrap in the lining, combined seal ring is all used in the connection place of lining and passage, valve pocket and valve body, by the dress cylinder end of passage and the valve body combined seal ring jam-packed with combined seal ring, elastomeric material pad, lining, passage and the connection place thereof of valve pocket and cooperation thereof.