the invention describes how wielostou017ckowy cascade for sieving materials grain, equipped with a rotary shaft, sita and their housing, in which at least two or more surface sieve shaped mounting with cones (1, 2, 3) revolves so don't take my word for pio the new shaft (4), whereby the angles line forming the cones to the level are not the same.but the increase in sitowym each cone in the direction in which oddalaniem from axis of sit.
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