Kinematic Analysis of a Variable-Amplitude Vibrating Screen and the Behavior of Mixed Sea Buckthorn Particles on the Screen
Year: 2026
Type: article
Abstract: Variable amplitude vibrating screens are widely used in the screening of frozen sea buckthorn berry particles. The study of its motion characteristics and the behavior of particles on the screen surface is crucial to optimize the screening process and improve the performance and screening efficiency of the equipment. In this study, the variable amplitude vibrating screen is taken as the research object, its structural composition and working principle are described, and the kinematic simulation of the variable amplitude vibrating screen is carried out by using RecurDyn. The results show that the amplitude and speed of the screen surface in the vertical direction gradually increase from the feed end to the discharge end, which helps the particles to pass through the screen surface quickly; the horizontal speed of the screen surface remains consistent in each section. The crank length affects the amplitude of the screen surface, while the crank speed determines the vibration frequency of the screen surface. By using EDEM and RecurDyn software, the dynamics model of the particles and the sieve surface was established, and the two-way coupling of the discrete element model was realized. The coupled simulation results show that the dynamic sieving efficiency increases with the increase of crank length and rotational speed. The dynamic sieving efficiency reaches the highest when the crank length is 20 mm and the rotational speed is 208 r/min. The crank length and rotational speed have a significant effect on the thickness of the particle layer on the screen surface and the number of particles passing through the screen: the thicker the particle layer is, the longer the particles stay on the screen surface; the accuracy of the model is verified by field experiments, and the results show that the coupled simulation model is basically in line with the field test data. The influence of crank length and rotational speed is crucial in the study of variable amplitude vibrating screen. The study of the motion characteristics of the variable amplitude vibrating screen and the behavior of the particles on the screen surface can provide a theoretical basis for the efficient operation and optimal design of the variable amplitude vibrating screen.
Source: Agriculture
Authors: Jingming Hu, Mei Yang, Qianglin Zhang, Jinfa Yang, Wuyun Zhao, Yang Bi
Institution: Gansu Agricultural University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
Award: 中国沙棘速冻脱果机理及低损伤脱果技术研究
OpenAlex ID: W7165177557