SU1255204A1 - Trommel crusher - Google Patents

Description

The invention relates to the crushing and screening of materials, namely, drum screening crushers, and can be used, for example, in construction, mining and coal preparation industries, as well as in heat and power engineering on the fuel supply path of thermal power plants.

The purpose of the invention is to increase the es1}) of the efficiency of the operation of the drum crushing machine during the processing of material prone to sticking due to the prevention of smearing of skt and lifting shelves of the drum.

Fig. 1 schematically shows a drum screening crusher, a general view, in Fig. 2, section A-A in Fig. 1; FIGURE 1 - node 1 in fig „1.

The drum screen crusher contains a metal drum 1 with sieves 2, forming its side surface, inside of which on sieves 2, metal lifting shelves 3 are arranged in an orderly manner. CHaipy metal drum 1 is closed by a hinge 4, rests with its 6 . supporting structures 5, made for example in the form of rollers and driven by rotation by drive 6, Metal lifting shelves 3 are connected between themselves by conductors of electric current 7s and to screens 2 of metal drum 1 through insulating dielectric pads 8 "Output current of electric conductors 7, for example, a metal rod connecting the metal lifting flanges 3, through the end wall of the drum Is, for example, through the axial hole in the crosspiece 9, extends outwardly the metal drum 1 and the casing 4. The output end of the electric conductors 7 is connected to the crosspiece 9 and the wall of the casing 4 with the possibility of rotating it through dielectric insulating sleeves 10. The output end of the electric conductors 7j connecting the metal lifting shelves 3 is electrically connected, for example, through a rotating contact device with a source of alternating electric potential 11. Metal drum 1 with sieves 2, for example, through supporting structures 5 is grounded

Drum screen crusher works as follows.

During the processing of wet material, the source of alternating potential 11 is turned on. The electrical circuit is closed through the metal lifting shelves Зг wet mass of the crushed material, sieve 2 metal drums} and the grounding device. The supply of electric potential of a certain polarity to the metal lifting flanges 3 creates conditions for repelling particles of a crushed material of the same charge with them. The polarity of the metal shelves 3 and sieve 2 is changed by a source of alternating potential 11 and is produced for alternately pushing away from them particles of different polarity into which bulk material dissociates, for example, coal, upon contact: with water. The effect of electrophoresis created in this way prevents sticking of particles of crushed material to metal lifting buttocks 3 and sieves 2, prevents the formation of solid deposits of particles of crushed material, smearing the holes of sieves 2 of metal drum 1.

Eliminating adhesion allows both to bale the efficient operation of the drum screen crusher when processing wet materials prone to adhesion to reduce the costs associated with stopping the screen crusher and laborious cleaning of the drum sieves and lifting shelves from the adhering material.

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Fig.d

FIG. 2

Editor G. Volkova

Compiled by V. Revva

Tehred A. Kravchuk Proofreader S. Cherni

Order 4743/7 Circulation 582 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

    tgt -1.1 j I--1-zh fm-- ---... -. “.-.-.---.-- --- - Production and Printing Enterprise, Uzhgorod, ul. Project, 4

Claims (1)

A DRUM SCREEN-CRUSHER containing a metal drum with lifting racks mounted on the toms of a metal drum through