MATERIAL GRINDER Russian patent published in 1997 - IPC

FIELD: agriculture, in particular, grinding of grain, may be used in combined feed industry, food-processing, chemical and construction industries. SUBSTANCE: grinder has housing, within which stator and rotor are positioned in opposed relation. Surfaces of stator and rotor faced one toward another are provided with fingers, whose free ends are inserted into annular bores. Each subsequent annular bore relative to axis of revolution of rotor has depth exceeding that of previous annular bore. Fingers of stator and rotor in each subsequent row relative to axis of rotation of rotor are positioned one opposite the other, with space between them being less than that of the previous row. Beginning from second rotor relative to axis of rotation, each row of fingers is spaced from subsequent row by distance exceeding that between this and previous row of fingers. EFFECT: wider operational capabilities, simplified construction and enhanced reliability in operation. 3 dwg