Design and Parameter Optimization of a Finger Clip Plate Garlic Seed-Metering Device Based on EDEM

In present-day mechanized garlic seeding, high missing rates and low qualified percentages of single seeds are common problems; thus, a finger clip plate seed-metering device was designed in this study. First, the structure working principle were studied. Subsequently, critical component parameters determined using theoretical calculations; then, EDEM software used single-factor simulation experiments to analyze effects opening diameter seed-collecting spoon, operating speed seeding tray, population number on seed-filling performance. Finally, Box–Behnken center combination experiment conducted with population, rotating tray as factors, single-seed filling rate, percent, rate evaluation indicators. A three-factor three-level orthogonal test establish mathematic regression model factors indicators, well realize parameter optimization. After rounding, laboratory validation carried out 240~280 seeds, 26 mm seed scoop-opening diameter, 28 r/min speed. The average reply 91.86%, 2.71%, 5.43%, respectively, which is basically consistent forecast results model.