The Effects of Some Mechanical Parameters of a Developed Millet Thresher on Millet Threshing and Cleaning Efficiencies

Some mechanical and process parameters of a developed millet thresher have been optimized using numerical optimization technique. The machine threshes panicles cleans the grains from straw. speed threshing number pegs attached to drum were investigated, while moisture content was parameter under investigation. Threshing efficiency, cleaning percentage losses used as performance characteristics investigating these parameters. A central composite rotatable design in experiment (CCRD). results experiments revealed that beater had significant positive effects on whereas panicle negative effects. considerable large effects, according studies. Also, combination 1590 rpm, 28 pegs, 15% resulted maximum efficiency 98.31%. substantial effect although small optimum 1730 35, 13.5 percent for 91.41 percent, 97.87, desirability 0.997 achieved optimization. study's findings include standard input machines processing variables produce best output.