ОЦЕНКА ЧУВСТВИТЕЛЬНОСТИ ПРОЦЕССА ТРИЕРНОЙ ОЧИСТКИ ЗЕРНА К РЕЖИМАМ РАБОТЫ

Abstract

Studies of the relationship between the speed mode of operation of the wild oat trier and the quality indicators of the technological process of purifying wheat from long impurities: the inevitable technological losses of full-fledged grain of the main crop into waste and residual contamination of the purified grain have been carried out. The studies were carried out using an experimental trier, which provided separate supply of grain mixture components into a cellular cylinder in specified ratios and control of the cylinder rotation speed with an accuracy of 0.1 rpm. It has been established that the quality of the process of cleaning grain from long impurities is greatly influenced by the speed mode of operation of the trier. The optimal value of the rotational speed of the cellular cylinder, at which the entire length of the cellular surface is involved with minimal losses of grain from the main crop, exists for specific values of grain supply to the trier and the angular position of the output tray. The maximum cleaning quality in terms of residual grain contamination is achieved in this way. Reducing the cylinder rotation speed from the optimal 34.6 rpm to 34.0 rpm (by 1.7%) leads to an increase in technological losses by 3.6 times with zero initial clogging and by 15.5 times with clogging 1. 3%. The relationship between the indicator of residual contamination and the size of the free cellular surface when the rotation speed of the cellular cylinder deviates upward from the optimal one has been established. With a grain supply of 1.2 t/h, an angular position of the working edge of the output tray of 55° and a cylinder rotation speed of 36.0 rpm, the value of the free cellular surface was 70 cm, the residual contamination was 14.2 pieces/kg, and in the absence of a free cellular surface, achieved by reducing the speed mode of the trier to 34.6 rpm, the residual contamination of the cleaned grain was 1.5 pieces/kg, which is 9.5 times less.