JET-TYPE MILL Russian patent published in 1997 - IPC

FIELD: fine grinding of materials; may be used in chemical, paint-and-varnish, power, food and other industries. SUBSTANCE: milling chamber of jet-type mill is provided with converging nozzle and resonator installed opposite to the nozzle. Both the nozzle and the resonator form an acoustic energy radiator. To reduce losses in the nozzle the latter may be of special profile. Cross-section of nozzle depends on design of the milling chamber and required power of sound radiation. Such nozzle may be round or slot-shaped. EFFECT: fine grinding of materials; reduced losses of acoustic energy in nozzle. 2 dwg