PNEUMATIC SEPARATOR FOR LOOSE MATERIALS Russian patent published in 1998 - IPC

FIELD: separation of loose materials; separation of difficultly separable grains in farming. SUBSTANCE: starting material is fed bin in monolayer vertically downwards and is blown with air jets from nozzles. Separated particles get on grain boards and enter the separation product receivers. Angle of inclination of first nozzle in direction from loading end to unloading one exceeds 45 deg and is found from the following formula: , where m is individual mass of particles; g is free fall acceleration; ρ is air density; V is air flow velocity; S is middle section of particles and K is drag coefficient. Angle of inclination of each subsequent nozzle and its drag in way from loading end to unloading one is more than previous one; grain boards are located between nozzles in inclined position. Before additional nozzles partitions are located. Separation product receivers are mounted under grain boards. EFFECT: enhanced efficiency of separation. 2 cl, 4 dwg