EXAMINATION OF PRODUCTIVITY OF THE SPIRAL CONVEYER WITH EQUIINCREASED TURN THREAD DURING

The scientific research is devoted to analysis and systematization of the current national and foreign investigations of scientists who examined work of transport and technological systems with such working tools as conveyer spiral, and the research is also devoted to own theoretical and experimental investigations. Interaction between stream of wheat and working surface of screw and influence of its constructive and technological parameters to the efficiency of spiral conveyor with equal increased turn thread during transportation of wheat and barley – is observed. Equation of regression to determinate efficiency of conveyors Q depending on growth of the screw turn on one thread ΔТ, conveyor discharge angle γ and rotation frequency of the screw n during transportation of wheat and barley in the range of changes of incoming factors: 0,003 ≤ ΔТ ≤ 0,007 (т); 15⁰ ≤ γ ≤ 45⁰; 100 ≤ n ≤ 400 (rev/min). Due to content solutions Statistica-6.0 for PC the engineering data plotting of general regressing models in form of squares surface and its bidimentional angles of efficiency Q as a function from two changeable factors  x_i(1,2) in terms of permanent stationary level of the certain third factor x_{і (3)} = const – was determined. Accordant to the results of researches it was determined that the most influence on change of the efficiency is made by the conveyor discharge angle γ and rotation frequency of the screw, and combination of these factors. Growth of conveyor discharge angle causes decrease of efficiency to 20%. In this case growth of the screw turn on one thread causes moderate decrease of efficiency to 3%. In general to increase efficiency it’s necessary to increase the frequency of the screw and to decrease conveyor discharge angle