关键词: 沙棘, 滚筒筛, EDEM仿真, 方差分析

Abstract: In order to solve the problem of high impurity content in the sieve of Seabuckthorn berries, a threelayer structure roller screen device was designed, and the parameters of key components such as vibration motor and damping spring were determined. The vibration force of roller screen was 7 644 N. The power of roller screen was 3.24 kW. The stiffness of damping spring was 8 047.3 N/m. EDEM discrete element software was used for simulating the rotating speed and inclination angle of the roller screen analysis. The simulation results showed that the screening efficiency and impurity content were 84.2% and 6.98% when the rotary speed and inclination Angle of the roller screen were 38 r/min and 8°. The variance analysis was carried out with two factors and three levels of the rotating speed and inclination angle as independent variables, and screening efficiency and impurity rate as indexes. The test showed that the rotating speed was 38 r/min and the angle was 8°, the screening efficiency and impurity rate were 82% and 87%, respectively. Screening efficiency difference between measured and simulation test was 2.2%, the impurity rate difference was 1.72%.

Key words: Seabuckthorn, roller screen, EDEM, variance analysis