| Nutty grain sunflower is threshed in high moisture content (harvesting moisture), contains various impurities that need to be removed before further processing. Cleaning unit include of oscillation screens using kinematic equation and physical properties of grains was designed, constructed and evaluated for separating impurities of threshing unit. RSM modeling method utilized for designing experiment and optimization of variable. The effects of oscillating frequency (7.6, 5.6, 3.6 Hz), slope (0.12, 0.07, 0.02) and amplitude oscillating (25, 17.5, 10 mm) of screens were studied. The results showed that the models were statistically significant at the 95% confidence level. It was observed that the amplitude oscillation on cleaning efficiency% and screen... |
