The regulation of operating modes of installation of dry cleaning potato tubers from soil pollution

The research objective was the definition of effective modes of operation of installation on dry cleaning of potatoes tubers from soil pollution providing coordination of indicators of technological perfection and quality of finished goods. The program, model and technique of research of operational modes of installation were described. Developed program, model and the technique of pilot studies of operational modes of installation allowed defining criteria values of duration of potatoes operation cycle, residual impurity of potatoes tubers of and specific power consumption of technological process in general. The researches on the improvement of technology and quality of production included the analysis of changes of the main technological indicators, the formation of criteria of improvement of technology and quality of cleared potatoes tubers and the choice of effective modes of operation of in-stallation. In the research mechanical structure and humidity of the soil, physical and mechanical characteristics of tubers of potatoes, and also quality indicators of work of installation and power expenses were defined. As basic data served the indicators: - the frequency of rotation of a disk, s-1; - the length of one tuber of potatoes, mm; - the width of one tuber of potatoes, mm; Minit. - initial weight (one or party) pol-luted potatoes before processing the device, in kg; Mres - the mass of conditionally pure potatoes after processing the de-vice, in kg; M - the mass of pure potatoes irrespective of processing, kg; - the duration of operation cycle of polluted potatoes, s were chosen. Developed criteria of improvement technology and quality of cleared tubers of potatoes allowed defining the effective modes of operation of installation with working frequency of rotation of a disk 7.67-8.32 s-1, and the lower bound of specified range corresponds to the quality of finished product, and the top - to the improvement of technol-ogy. The installation for dry cleaning of potatoes at initial im-purity to 12 % and humidity of pollution to 33 % provides high-quality cleaning - residual impurity of potatoes does not ex-ceed 1.55 %. The losses in weight in the course of cleaning of potatoes did not exceed 1 %.