ASSORTING GRAIN HEAPS BY MEANS OF BLADED THROWER
When handling the grain heaps arriving from the harvester and having the increased humidity and contamination, tape throwers are used. They combine preliminary purification, drying and chilling of grain with materials loading operations. It allows lowering considerably load of the machines used for further purification of material and, as a result, increasing their efficiency in respect of quality of handling and their performance. For conducting pilot studies of the bladed thrower the special ground with grain catching cells was made. As initial material grain heap of wheat variety Novosibrskaya-67 with average values of a contamination of 10%, humidity of 14%, mass of 1000 grains of 32 g, viabilities of 85% was used. Experiments were conducted in case of adjusting value of giving grain heaps of 5 t/h at speeds of tape of 10, 15 and 18 m/s. After carrying out experiment, content of each cell of the ground was analyzed. The analysis of experimental data showed the best separation of grain heaps into fractions: impurity, fodder and food grain. Bladed thrower allocates fraction of the purified food grain in number of 55.5-85.5% in case of various operating modes and can be used in flow lines.