“…The results of other evidence obtained by researchers (Alferov, 1987;Kutzbach, 2001;Miu and Kutzbach, 2008;Steponavičius et al, 2008;Kotov and Chaus, 2010;Mudarisov and Badretdinov, 2013;Vasilevskij et al, 2013;Mirzazadeh et al, 2015;Baran et al, 2016;Špokas et al, 2016;Korn and Herlitzius, 2017;Sorochenko, 2017;Aldoshin and Lylin, 2018;Korn, 2020) indicates that the technological process of pneumo-sieve cleaning in the GH violates agrotechnical requirements (Špokas et al, 2016;Aldoshin and Lylin, 2018;Wang et al, 2018;. Due to the increase in productivity (Miu and Kutzbach, 2008;Aldoshin and Lylin, 2018; and throughput (Špokas et al, 2016;, problems arise in terms of quality of the purification system function-ing. This can be explained by the complexity of the simultaneous regulation of some design and technological parameters (fan speed and airflow rate, sieve gaps, and angular speed of the sieve drive crank) (Mirzazadeh et al, 2015;Wang et al, 2018) and depends on the harvested crop and on its physical and mechanical properties (geometric parameters, humidity, contamination) (Kutzbach and Quick, 1999;Kutzbach, 2001;Feiffer et al, 2005;Kelemen et al, 2005;Steponavičius et al, 2008;FAO Report, 2014;Špokas et al, 2016).…”