Influence of rotation frequency of the drum of the separating grain thrower on the efficiency of grain cleaning

Currently, in agriculture, the available grain cleaning machinery does not correspond to modern conditions of grain production and is physically worn out. And small farms and farmers do not have the required equipment. Therefore, it is necessary to develop a grain cleaner that is adapted to the diversity of conditions of modern agricultural production, providing minimal costs, but allowing to obtain most of basic grain at the first stage of processing and simultaneously to carry out not only cleaning, but also cooling and drying. A separating grain-throwing unit has been developed, which differs from all existing ones in the grain-throwing blades made of two interconnected sickle-shaped and receiving parts, the first of which has a rounded cone-shaped section at the periphery. That cone-shaped section reduces damage and injury of seeds and pre-distribute the incoming grain material on different fractions. Analysis of experimental studies showed that it is possible to obtain more than 80% of basic conditions in the processing process.