Analysis of the process of material movement in a screw conveyor

Screw conveyors, as a universal vehicle, are used for moving, grinding, mixing, dosing of various materials, including products of agricultural production – grain, root crops, fodder mixtures, etc. Increasing the technological efficiency of their use is achieved through constructive improvement and optimization of rational parameters and modes of operation, which is an actual scientific problem. The purpose of the work is to expand the functional capabilities of screw conveyors due to the combination of adjacent technological operations of grinding and moving root crops into one operation by developing a combined working body. The task of the research is to develop a mathematical model that describes the kinematic-dynamic processes of the movement of the flow of crushed root crops along the spiral turn of the auger along the axis of its rotation. In this aspect, two cases of movement of the body of crushed root crops by the working organs of the screw conveyor-shredder are considered: the body of crushed root crops moves along the working surface of the spiral coil without contact with the inner surface of the guide pipe – case I; the body of crushed roots moves simultaneously along the working surface of the spiral coil and the inner surface of the guide pipe – case II. The obtained analytical results of the movement of crushed root crops are a further step in the improvement of the methodology of optimizing the rational parameters of the combined screw mechanisms.