GRINDER FOR PLASTIC MATERIAL Russian patent published in 2002 - IPC

FIELD: grinding equipment used in chemical and other branches of industry. SUBSTANCE: grinder has charging hopper with doser, grinding chamber with immovable cutting members, gaging grid and rotor with beating cutters. Cutting members have grooved working surface and are secured in chamber wall for radial displacement. Cutting members are spaced from beating cutters of rotor by distance of 0.1-0.4 mm. Beating cutters have cutting edge with angle of 5-15 deg. Rotor and beating cutters are equipped with water cooling system. Grinder is preferably used for grinding high-pressure polyethylene granules. EFFECT: increased efficiency and simplified construction. 6 dwg