2002 Volume 64 Issue 3 Pages 51-55
Part 1 presented the analysis of the air flow at non-material in grain separation tunnel. In order to discuss the behavior of grain and wastes in the flow of separation wind, it's very important to measure the terminal velocity of grain and wastes. This paper discussed to make flying of grain and wastes easy in the air flow by measuring the terminal velocity. In this result, it was proved itself difficult to separate grains with primary branches and straws in the grain tank from single grain, because the terminal velocity of grain with primary branches and straws was more than single grain. And it was plain the suitable limits of the separating wind velocity is from 2.3m/s to 6.5m/s in accordance with the result that the max limit of terminal velocity of released wastes from the suction fan was 2.3m/s and the minimum limit of that of single grain was 6.5m/s.
