Design, Simulation and Experimentation of an Axial Flow Sunflower-Threshing Machine with an Attached Screw Conveyor

Sunflower threshing is one of the most interesting field processes for making sunflower ready seed handling, drying, cleaning and oil extraction. One biggest problems observed during process accumulation threshed crop on first third roller passing off some unthreshed parts heads. To solve aforementioned problem optimize efficiency process, this research was focused devising testing a machine with close box system equipped screw conveyor that evenly distributed feedstock heads entire length roller. The tested to assess damage rate, percentage, efficiency, productivity, power requirements specific energy consumption. evaluation done under different rotational speeds (150, 200, 250 300 rpm) feeding rates (600, 700, 800 900 kg/h). obtained results revealed parameters were affected significantly by speed rate. rise in speed, it also rose increasing feed rate up kg/h then started descend. percentage decreased increase all rates, at higher rates. damaged requirement productivity increased Buckingham π theorem followed find an equation predict resulting R2 value 0.9309. With elimination blockage better could be good choice small- medium-sized farms.