Abstract
The process of feeding and purification of green peas from impurities is investigated. The existing scheme for raw material feeding and purification consists of a hydraulic conveyor, water separator, receiving hopper, air selector and inspection conveyor. It is proved that this scheme does not provide accurate dosing and uniform feeding of raw materials throughout the width of the working area of the air selector. An advanced scheme for feeding and purifying green peas from impurities with new design solutions has been developed. The scheme for feeding and purification of green peas additionally includes a screw dispenser, and for uniform feed of the width of the working area of the air selector it is proposed to install a vibration selector. This will improve the quality of green peas purification from light, more volatile impurities, and reduce the cost of manual labor for operators. comparative analysis of the existing and improved schemes for feeding and purification of green pea grains from foreign impurities, which proved the effectiveness of the improved scheme, has been carried out. The hardness of green pea grains and the percentage of broken and damaged green pea grains in jars are determined depending on the green pea grade. It has been proved that green peas of higher grade have lower hardness and lower percentage of broken and damaged grains, and those of table grade have higher hardness and higher percentage of broken and damaged grains. The productivity of each green pea grade has been calculated and a comparative analysis of the productivity of each green pea grade on the lines before and after the improvement has been carried out. As a result of the research it is proved that: 1) there is a direct dependence of the quality of green pea purification on productivity; for green peas of the highest grade productivity is much higher than for green peas of table grade; 2) there is an increase in productivity of each grade of peas on the modernized lines (after improvement). It has been proved that an improved scheme for feeding and purification of green peas from foreign impurities will improve the quality of cleaning green peas from light, more volatile raw materials, impurities, as well as reduce the cost of manual labor of operators. Accordingly, the number of operators working on the inspection conveyor will decrease and the quality of the canned goods will be improved.
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