Performance indicators of flat sieve with oblong holes located at an angle

Abstract

Increase in the productivity of domestic grain cleaning machines produced by traditional methods has exhausted itself. Therefore, the country's agricultural enterprises of various forms of ownership need high-performance innovative grain cleaning machines for post-harvest grain processing. The article presents various methods and ways to improve the performance of grain cleaning machines. The results of studies are presented to determine the completeness of separation and the sieve capacity of grain cleaning machines with oblong holes located at an angle, when interacting with a long edge, which makes reciprocal oscillations. Theoretically, rational values of inclination angle of the sieve holes are determined equal to α’ = 10… 15°, which increases the probability of a particle passing into the sieve hole by 1.7 times. The results of the production inspection of the sieves of the proposed design showed that the capacity of the grain cleaning machine increased by 23%, and the quality of cleaning the grain mixture meets the agrotechnical requirements.