基于EDEM的旋振筛筛分机理研究与分析

Research and Analysis on Screening Mechanism of Rotary Vibrating Screen Based on EDEM

摘要: 针对旋振筛筛分效率的研究，大多集中于旋振筛机械结构及振动电机的转速上，物料参数对旋振筛筛分效率影响的研究相对匮乏。为了解物料参数对旋振筛筛分状况的影响，以三元旋振筛为研究对象，以筛分颗粒的不同形状组合、颗粒投放速率为研究目标，分别对颗粒在不同筛分层上的质量、平均速度以及颗粒的平均转动动能、平均平动动能的变化情况进行分析，研究其与旋振筛筛分效率之间的关系。仿真结果表明，球形颗粒的筛分性能优于非球形颗粒，同等工况下，提高物料中球形颗粒占比可使筛分效率提高15%左右。

Abstract: The research on the screening efficiency of rotary vibration screen mostly focuses on the mechanical structure of rotary vibration screen and the speed of vibration motor, and the research on the influence of material parameters on the screening efficiency of rotary vibration screen is relatively scarce. To understand the status of the material parameters on the vibration sieve, the influence of the vibration sieve as the research object, with three yuan with different shapes combinations of sieve particles, particles on the rate as the research target, respectively about the quality of the particles in different sieve stratification, average velocity and particle average rotational kinetic energy, the change of the average translational energy is analyzed. The relationship between it and the screening efficiency of rotary vibration screen is studied. The simulation results show that the screening performance of spherical particles is better than that of non-spherical particles, and the screening efficiency can be increased about 15% by increasing the proportion of spherical particles in the material under the same working conditions.