Vertical impact crusher

Details Vertical impact crusher Vertical impact crusher

1991-05-28

1992-07-21

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Stationary comminuting surface or material bed

B02C 1900

Patent

active

051316013

ABSTRACT:
A vertical impact crusher comprises a rotor supported for rotation at a high rotating speed about a vertical axis, and having discharge gates through which a material fed into the rotor is discharged for crushing. Each discharge gate is provided in one side thereof with a pair of hard chips provided respectively with cemented carbide chips and stacked one over the other so as to be replaced with each other. Each hard chip has upper and lower portions projecting in the direction of rotation of the rotor, and each cemented carbide has upper and lower portions projecitng in the direction of rotation of the rotor. The hard chips provided respectively with the cemented carbide chips are replaced with each other after the working surfaces of the hard chips and the cemented carbide chips have been abraded to some extent. The surfaces of the new hard chips and the new cemented carbide chips are formed so as to guide the flow of the material toward the upper and lower portions of the stack of the hard chips and the cemented carbide chips so that the recesses formed between the upper and lower portions of the hard chips and the cemented carbide chips are abraded more intensively than the middle portion of the stack of the hard chips and the cemented carbide chips in the initial stage of use and so that the middle portion of the stack is abraded more intensively than the upper and lower portions of the stack after the mutual replacement of the hard chips together with the cemented carbide chips.

REFERENCES:
patent: 3032169 (1962-05-01), Bridgewater
patent: 4586663 (1986-05-01), Bartley
patent: 4784339 (1988-11-01), Deffenbaugh
patent: 4787564 (1988-11-01), Tucker
patent: 4834298 (1989-05-01), Murata et al.
patent: 4871119 (1989-10-01), Murata et al.

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