CN2131620Y

CN2131620Y - High efficiency material selective separator

Info

Publication number: CN2131620Y
Application number: CN 92228943
Authority: CN
Inventors: 丁丕烈
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-23
Filing date: 1992-07-23
Publication date: 1993-05-05
Anticipated expiration: 2002-07-23

Abstract

The utility model relates to a high efficiency material selective separator, comprising a barrel body, an upper cover, a charge pipe, an air intake for the first time, an air intake for the second time, a discharge pipe for fine powder, an outlet for coarse material, a spreading disc, a main shaft, an impeller, etc. The utility model is characterized in that the discharge pipe for fine powder is arranged on the lower part of the impeller; the surrounding of the spreading disc has a short cylindric material blocking ring whose inner wall has a plurality of circular rings in parallel; a shutter is clamped between the flange of the lower part of the material blocking ring and the flange of the upper part of the material collecting ring to form an air-current passage; each flange of the material blocking ring and the material collecting ring has a circle of circular holes; an air guiding leaf stalk shaft passes through the circular holes and can rotate; the air guiding leaf stalk shaft plays the action of a shaft and a bearing. The utility model has the advantages of simple structure, low cost, high efficiency and convenient maintenance.

Description

High efficiency material selective separator

The utility model relates to a kind of high efficiency powder concentrator, can replace existing centrifugal and cyclone type powder sorting machine, is used for and ball mill or other milling equipment are formed new closed-circuit grinding system, improving the efficient of grinding process, and can select the fine powder of high fineness.

With the present situation of the utility model correlation technique be O-Sepa type, Denmark F, L, the Sepax type of Smidth company and the SD type of U.S. Sturtevant company of Japan little wild field company.The 6th phase of Zement-Kalr-Gips magazine in 1986 was done introduction to above several types.Its weak point is: the fine powder discharge pipe after the classification of O-Ssepa and Sepax type is installed in the body top, but transmission device also is equipped with at the top, and power transmission shaft is concentric with discharge pipe, this makes the power transmission shaft must be very long, thereby equipment is very high, complex structure, involve great expense maintenance difficult.Sepax is except that having above-mentioned shortcoming, and also because of from bottom feed, volume is Gao Gengda more; The rotor of SD type is the cage made from rod iron, and grading is little, and in addition, its gas enters rotor by which floor folded mutually with one heart truncate cone after entering body, and this which floor truncate cone lacks guide effect to gas, and can't adjust.

Task of the present utility model is exactly to provide the high efficiency that a kind of volume is little, simple in structure, easy to maintenance, efficient is high powder concentrator at above-mentioned the deficiencies in the prior art.

Finish task technical scheme of the present utility model:

Set up in the plane classification field by forced draft to vortex flow, the material that is scattered in the air-flow is subjected to centrifugal force and centripetal force effect simultaneously, but with material particles vary in size and the centrifugal force that is subjected to and the size of centripetal force also have nothing in common with each other, the different particle of material thickness is moved to different directions, thereby realize thickness grading.

The utility model is installed in the fine powder discharge pipe impeller below that is surrounded by shutter, so just avoided fine powder discharge pipe in the prior art to be installed in the shortcoming at body top, the length of power transmission shaft shortened dramatically, the complete machine highly significant reduces, simplify the structure, maintenance is also convenient; Short tubular blocking material ring is housed below organism top case, the horizontal garden ring that several is parallel to each other is housed on the inwall of blocking material ring, in the running, these garden rings are gone up the long-pending loose material that has, be thrown to the material on the ring of garden again, just lose horizontal kinetic energy and can only make the material baffling form cylinder lining curtain downwards, simultaneously can prevent to expect that piece is got rid of the bump impeller that rebounds on the steel plate of blocking material ring inwall, avoid the impeller damaged, in addition, the turning effort of impeller has prevented that the coarse granule of material is bound in the impeller, therefore, can improve the separation efficiency of thickness material greatly; The flange of the lower flange of blocking material ring and the borrow ring leaf formation gas passage that is clipped in the middle of will collecting folk songs; The flange of the blocking material ring lower flange and the ring that gathers materials respectively has a circle hole, garden, and the arbor of wind-guiding leaf passes wherein, can rotate, and plays axle and bearing effect.

That the utility model compared with prior art has is simple in structure, volume is little, cost is low, the advantage of easy to maintenance, good separating effect.

Fig. 1 is a front section view of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Be that embodiment is described in further detail the utility model structure and action principle below with the accompanying drawing.

As shown in Figure 1, in main shaft 1 lower end of rotation, spreading disk 2 and impeller 3 are housed, the structure of impeller 3 is similar to draught fan impeller, and some shutters 5 by wind-guiding leaf 4 compositions that distribute in garden week are housed around the impeller 3, fine powder discharge pipe 6 is housed below the impeller 3.On loam cake 7, charge pipe 8 is housed, the blocking material ring 9 of short tubular is housed below the loam cake 7, some garden rings 10 that are parallel to each other are housed on the inwall of blocking material ring 9, flange 11 is arranged at the bottom of blocking material ring 9, the ring 12 that gathers materials is arranged below shutter 5, above the ring 12 that gathers materials flange 13 is arranged, the shutter 5 that flange 13 and flange 11 are formed wind-guiding leaf 4 is clipped in the middle and forms an annular air-flow path.The petiole 19 of each wind-guiding leaf 4 is little axles, and these little axles pass in the hole of opening on the

flange

11,13 and are fixed, but rotatable, play simple axle and bearing effect.Around the shutter 5 is upper shell 14, below once air inlet 15 and the secondary air mouth 16 above, upper shell 14 pyramidal lower shell 17 is arranged, its lower end is a coarse fodder air outlet 18, fines discharge pipe 6 just is fixed on the lower shell 17, and joins with 3 one-tenth labyrinths of impeller.

Function and use principle

Enter air-flow in the machine from air inlet 15 of upper shell 14 and secondary air mouth 16, behind shutter 5 water conservancy diversion, form in the plane, first road to the vortex flow region, promptly outer classification field, enter the impeller 3 of rotation then, form in the plane, second road to the vortex flow region, be the internal classification field, flow out from fines discharge pipe 6 with fine powder then that the motion of air-flow is to be undertaken by the blower fan of establishing in addition in the ventilating system.

After material enters machine by the charge pipe on the loam cake 78, drop on the spreading disk 2, and be thrown toward the inner face that is contained in the blocking material ring 9 below the loam cake 7, on the garden ring 10, amassed on the garden ring 10 because of material be loose, the material that gets rid of again just loses kinetic energy and is downward by baffling, carry out first classification among forming the material curtain of garden cylinder shape outside in the classification field and being dispersed to air-flow, middle fine powder after the first classification is brought into the internal classification field by classification once more by air-flow, and fine powder is after this taken out of from fine powder discharge pipe 6 by air-flow.Take the collecting device established in addition of back out of and collect and be that fine powder, the meal of twice classification collect in the ring 12 that gathers materials, discharge from the coarse fodder outlet 18 of lower cone 17 at last, finish grading.

The utility model is twice classification, and the first order is regulated by the opening angle that changes wind-guiding leaf 4, and opening angle is more little, and the middle fine powder of staying in the air-flow is thin more, otherwise thick more; The second level is by the rotational speed regulation of impeller 3, and rotating speed is high more, and fine powder is thin more, otherwise thick more.The air quantity that also can change primary and secondary air is regulated in addition, and air quantity is big more, and fine powder is thick more, otherwise thin more, by reasonable adjusting, secondary is rationally mated, and raises the efficiency.

Claims

1, a kind of high efficiency powder concentrator, comprise loam cake, charge pipe is equipped with the upper shell of air inlet and secondary air mouth, fine powder discharge pipe, export the lower shell that is fitted together with coarse fodder, the rotor of being made up of spreading disk and impeller is by the shutter that rotating wind-guiding leaf is formed, blocking material ring, gather materials the ring etc., it is characterized in that: fine powder discharge pipe 6 is installed in impeller 3 belows that surrounded by shutter 5; Below loam cake 7, around the spreading disk 2, the blocking material ring 9 of short tubular is housed, several garden that is parallel to each other ring 10 is housed on the inwall of blocking material ring 9; The shutter 5 that the flange 11 of blocking material ring 9 bottoms and the ring 12 top flanges 13 that gather materials are formed wind-guiding leaf 4 is clipped in the middle and forms an annular air-flow path; Respectively have a circle hole, garden on the flange 11 below the blocking material ring 9 and the ring flange 13 that gathers materials, the arbor 19 of wind-guiding leaf 4 passes the hole, garden; Arbor 19 can rotate, and plays axle and bearing.