Simulation and Experiment of Fertilizer Discharge Characteristics of Spiral Grooved Wheel with Different Working Parameters

Fertilizer particles have strong hygroscopicity and agglomeration often occurs during their storage, which leads to a blocked phenomenon the operation of external grooved wheel fertilizer discharger. In this study, bond model block was constructed based on discrete element method (DEM) further explore effect different working parameters spiral discharge characteristics. According Box–Behnken experimental design principle, three-factor three-level simulation experiment carried out with factors speed, section shape, rise angle. The results showed variation coefficient uniformity affected, from important secondary, mainly by rotating speed wheel, cross-sectional shape broken rate angle, rotational wheel. optimal combination obtained optimizing analyzing data; 21 r/min, scoop section, angle 70°. Under best parameters, 8.56%, 97.67%. validation that 9.23%, 94.28%, relative data error less than 10%. are close results. research can provide reference for structural parameter optimization