Study of a pneumatic separator for grain cleaning

Abstract

This article deals with experimental studies of a pneumatic separator with a passive deck. Post-harvest handling of grain is one of the important operations in grain production. Quality cleaning and drying contribute to grain storage without significant losses. The grain litter after the harvest of the combine harvester, which takes place in the shortest possible time, is the most clogged. This causes a problem in terms of cleaning. An important problem is also the physical and obsolescence of the cleaning machines, even though the annual workload is relatively small. This has a significant impact on productivity. Of all those in the agricultural industry, the most commonly used separation of grain from impurities is by aerodynamic properties and separation by size on the sieve. The design of an experimental pneumatic separator with a passive deck was developed. Experimental studies of the pneumatic separator with a passive deck were carried out, based on which plots of the dependences of the completeness of the separation were plotted on the angle of inclination of the flap and the feed of the grain material. The optimal parameters and modes of the grain cleaning machine were determined: the lowest losses of the main crop and the cleaning efficiency are achieved at the flap inclination angle α=0˚.