Apparatus for size reduction of heavy solid waste materials

Solid material comminution or disintegration – Apparatus – With separation or classification of material

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Details

241 86, 241 881, 241191, 241242, B02C 12284

Patent

active

051508443

ABSTRACT:
Multiple size-reducing actions of heavy solid waste are carried out during each unidirectional rotation of a ballast-weighted drum rotor means having impact-cutter bar means projecting in fixed position about its drum surface. Feedstock contacts the rotating rotor means and is propelled against an anvil surface. Frangible materials are split and/or otherwise fragmented during such initial stage. Continued rotation cuts or crushes larger feedstock product with maximum dimensional aspects determined in part by the radial projection of the impact-cutter bar means as the latter move into a zone defined by a grate partially circumscribing the rotor means. Intermediate product in the space between the rotor drum and the grate passes through apertures in the grate or is driven into and sheared at such apertures which determines maximum cross-sectional dimensions of size-reduced product. The configuration of such grate apertures facilitates shearing of intermediate product. Clearances between rotor parts and the anvil and/or grate surfaces are adjustable; and, the anvil and/or grate are releasable under stress to avoid damage from work product which cannot be cut or crushed. Accumulation of fibrous materials on the rotor means is minimized during passage over the grate and any build-up is eliminated.

REFERENCES:
patent: 247749 (1881-10-01), Dawson
patent: 646249 (1900-03-01), Williams
patent: 1494302 (1924-05-01), Borton
patent: 1606035 (1926-11-01), Mitts
patent: 2858943 (1952-02-01), Kessler
patent: 3426674 (1969-02-01), Testolin
patent: 4009836 (1977-03-01), Strom et al.

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