DEVICE FOR GRINDING MATERIALS Russian patent published in 1997 - IPC

FIELD: machines for grinding materials. SUBSTANCE: device for grinding materials has housing provided with longitudinal slots diminishing in the direction from loading port to unloading port. The housing internally accommodates a rotor, the outer surface of which has slots of similar shape and forms together with the housing an eccentric clearance. The unloading port of the housing has separation grid and sections of rotor and housing slots are associated by relation Shmin

< S_p-r< Shmax , where Shmin and Shmax are sectional areas of the housing slots respectively near the loading port and unloading port, S_r is the sectional area of the rotor slot. Geometric form of the section of each slot of the rotor and housing is made up of a portion of an ellipse or a polyhedron. EFFECT: enhanced efficiency. 3 cl, 3 dwg