Machinery & Energetics

The work is devoted to the investigation of the influence of constructive and kinematic parameters of the conveyor-separator of a universal cleaning machine on the technological efficiency of grain separation. The purpose of the research is to establish the influence of the design parameters and the mode of operation of the conveyor-separator of a general-purpose grain cleaning machine, which was developed at the Department of Agricultural Machinery of Kirovohrad National Technical University, on qualitative indicators of grain purification. After the ranking, the most important factors influencing the process of grain purification on the conveyor-separator sieve were determined: diameter of cross-section of the sieve, angle of inclination of the grid surface to the horizon, speed of the working branch and feeding of grain material. To establish the degree of influence of the most significant factors on the clarity of separation, an experimental installation was developed and a methodology for laboratory experiments was developed. During the research, the matrix of the full factor-type experiment of type 24 was implemented. The basic level and intervals of the variation of factors were chosen based on the analysis of the results of theoretical studies and preliminary data of experimental research. The regularities of changing the clarity of separation of grain from the diameter of the cross-section of the sieve, the angle of the slab surface to the horizon, the speed of the working branch and the supply of grain material are given in the form of three-dimensional surfaces. The obtained results allowed to establish rational parameters of the conveyor-separator to provide the necessary grain separation clarity.

grain cleaning machine, conveyor-separator, separation clarity, quality, grain purification, regression equation, criteria for evaluating results of experiments, response surface