Justification of design-mode parameters separating device

In Kazakhstan, the basis of the country's food security is livestock products. Increasing the production of livestock products is impossible without creating a strong feed base, high-quality preparation of feed, rational use and reduction of feed losses. Preparation of coarse stem feed for feeding requires grinding with feed grinding and mixing machines to obtain balanced feed mixtures. The grinding process is complicated by the fact that, along with coarse stem feed, foreign solid impurities enter, which damage the cutting organs of machines and cause a long shutdown of the entire feed preparation line, disruption of the feeding schedule, and reduction in animal weight gain and milk yield. These problems are of particular relevance in the development of small farms with a low level of mechanization. The authors have developed a device for separating foreign solid impurities from coarse stem feeds, the novelty of which is confirmed by a patent for an invention of the Republic of Kazakhstan. The article theoretically substantiates the influence of the design and operating parameters of the separating device for cleaning stem feed from foreign solid impurities. To separate foreign solid impurities from bound materials, such as stem feed, the most effective are separators with working bodies in the form of an air flow. In separators of this type, differences in the totality of physical and mechanical properties are used to separate foreign impurities from stem feeds. This approach makes it possible to achieve better separation by mechanical devices and expect their development towards the use of as many combinations of the distinctive properties of the separated components as possible.