GRINDER Russian patent published in 2002 - IPC

FIELD: equipment for grinding sheet and three-dimensional polymeric materials. SUBSTANCE: grinder has horizontal cylindrical casing with discharge opening in its upper part and grid with gauged openings in its lower part, vessels for receiving ground material, and rotor. Three shafts are mounted on rotor for performing planetary motion, with outer shafts rotating in opposite directions relative to middle shaft. Disk-type cutters are put onto respective shafts so that disk-type cutters of each outer shaft are located between disk-type cutters of middle shaft with gaps enabling cutting of material due to scissors effect during rotation of shafts. Disk-type cutters are positioned for passage of rotating rotor along grid in spaced relation to grid, with space enabling gripping of material parts disposed on grid. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 6 cl, 5 dwg