TAPERED ELECTROMAGNETIC VIBRATING GRINDER Russian patent published in 1998 - IPC

FIELD: crushing and grinding of materials. SUBSTANCE: electric motor stator 18 secured rigidly on axle 2 of bode 1 and rotor 19 secured rigidly on internal cylindrical surface of moving cone 6 are positioned in the latter. Stator 18 is arranged inside rotor 19. Clearance between stator and rotor is 0.1-0.3 mm larger than clearance between moving cone 6 and limiting ring 17. Resulting single-way gravitational force is in plane passing through middle of calibration surface 21 of cones, and center of masses of moving cone 6 is positioned below plane indicated above. Impeller 14 provided with auxiliary disbalancing mass is positioned coaxially inside moving cone 6. EFFECT: more effective design. 4 cl, 1 dwg