Solid material comminution or disintegration – Apparatus – With separation or classification of material
Patent
1985-07-23
1987-03-31
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
With separation or classification of material
241 80, 241 91, 2411863, 241188R, B02C 13286
Patent
active
046537007
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to material crushing or grinding, and more particularly to a disintegrator.
BACKGROUND OF THE INVENTION
There are known disintegrators (cf., USSR Inventor's Certificate No. 541,497, IPC B 02 C 13/10; U.S. Pat. Nos. 3,771,734, Cl. 241-187, 3,894,695, Cl. 241-55, and British Patent No. 943,319, Cl. B 2A) comprising a housing and grinding rotors inside the housing. The housing has side walls and a cylindrical part making a one-piece construction with one side wall, the other wall being movable. The bottom portion of the cylinder has an outlet pipe, whereas the side wall has an inlet pipe. During operation the ground material is dicharged from the outlet pipe fixed in a structurally predetermined position.
There is also known a grinding apparatus (cf., USSR Inventor's Certificate No. 528,118, IPC B 02 C 21/00) comprising a housing accommodating a rotor with beaters and a separator. The housing includes a cylindrical part and two side walls. The cylindrical part has an inlet pipe and a vertically arranged pipe for evacuating the ground material to the separator. The apparatus can be used only for separation grinding. It needs modifications to carry out once-through grinding.
There is further known a disintegrator (cf., USSR Inventor's Certificate No. 541,497, IPC B 02 C 13/10) which comprises a grinding chamber accommodating rotors with grinding wheels. The housing of the chamber includes a cylindrical part having a pipe for evacuating the material from the grinding chamber and two side walls on one of which there is secured a pipe for charging the material to be ground into the grinding chamber. The cylindrical part of the housing is rigidly connected to one side wall to form an integral arrangement.
The material to be ground is fed to the grinding chamber through the charging pipe to be admitted to the first grinding wheel of the first rotor, and thereafter successively to the rest of the grinding wheels. The material is then thrown away from the rotors toward the inside surface of the cylindrical part of the housing to form a layer of such material sliding down to the outlet pipe to be evacuated from the grinding chamber.
This known disintegrator carries out once-through grinding and the material being ground is discharged from the bottom portion of the housing. In order to effect recycle operation, or to provide separation grinding, it is necessary to make use of auxiliary conveying means to return the material for repeated grinding to crush coarse fraction and collect fine fraction. A switchover from the once-through grinding to recycle grinding is therefore impossible.
SUMMARY OF THE INVENTION
The present invention is aimed at the provision of a disintegrator having a grinding chamber housing of such a construction as to ensure expansion in functional capabilities by making it possible for the disintegrator to operate under various grinding operation modes.
The aims of the invention are attained by that in a disintegrator comprising a grinding chamber accommodating grinding rotors, the housing of the chamber including a cylindrical portion with an outlet pipe for evacuating the material from the grinding chamber, and two side walls, one of which walls has secured thereto a pipe for charging the initial material to the grinding chamber, according to the invention, the cylindrical portion of the housing of the grinding chamber can be turned relative to the side walls and locked in a predetermined position by locking means arranged about the periphery of the cylindrical portion of the housing and comprising a pressure plate secured on one of the side walls of the housing by a bolt, one end of the pressure plate bearing on a projection provided on the respective wall of the housing, whereas the other end is received by an annular groove made on the outer surface of the cylindrical portion of the housing of the grinding chamber.
The proposed invention enables to make a switchover of the disintegrator from one grinding operation mode to a different ope
REFERENCES:
patent: 1959465 (1934-05-01), Dryfoos
patent: 3711734 (1973-01-01), Yamazaki et al.
patent: 3771734 (1973-11-01), Stephenson et al.
patent: 3894695 (1975-07-01), Benedikter
Sarandi Jury L.
Tamm Yaan V.
Tjumanok Alexei N.
Rosenbaum Mark
Tallinsky Politekhnichesky Institut
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