CHIP BREAKER Russian patent published in 1999 - IPC

FIELD: production of powders from chips of plastics, active metals and alloys. SUBSTANCE: chip breaker has casing, immovable knives fixed within casing, horizontal rotor, movable knives attached to outer surface of rotor, and sieve arranged in equally spaced relation with respect to cutting edges of movable knives, which are inclined to cutting edges of immovable knives. Movable knife cutting edge apexes are spaced from sieve by distance equal to 1.05 of width or diameter of sieve openings, which are inclined relative to sieve curvature radius. Movable knives may be disposed in staggered arrangement on rotor and joined in pairs so that their edges define dovetail part. Sieve openings may be inclined in direction of rotation of rotor. Cooling liquid supply openings may be made in rotor and in casing part to which knives are attached. EFFECT: increased efficiency, simplified construction and wider operational capabilities. 4 cl, 3 dwg