基于三维离散元法对等厚筛筛分过程进行了模拟试验,采用Design-Expert软件进行了试验设计和数据处理,分析了筛分效率的影响因素及各因素之间的关系。结果表明,筛分效率在72.6%~92.8%之间;筛分效率与排料端倾角、振动方向角、振动强度之间具有二次方相关关系;当确定其中两个因素,另一因素在给定范围变化时,筛分效率随排料端倾角增大而减小,随振动方向角增大而增大,随振动强度的增大而减小;各因素对筛分效率的影响强度依次为排料端倾角、振动强度、振动方向角;排料端倾角、振动方向角、振动强度之间的交互作用,对筛分效率的影响强度依次为排料端倾角×振动强度、振动方向角×振动强度、排料端倾角×振动方向角。 Based on the three-dimensional discrete element method, the screening experiment of the equal-thick sieve was simulated. The design and data processing were carried out by Design-Expert software. The influencing factors of the screening efficiency and the relationship among the factors were analyzed. The results show that the screening efficiency is between 72.6% and 92.8%. The screening efficiency has a quadratic relationship with the discharge angle, vibration direction angle and vibration intensity. When determining the two factors, the other factor is When the range is changed, the efficiency of screening decreases with the increase of discharge angle and increases with the increase of vibration angle, and decreases with the increase of vibration intensity. The influence of each factor on screening efficiency is in turn For the discharge end angle, vibration intensity, vibration direction angle; discharge end angle, vibration direction angle, vibration intensity interaction between the screening efficiency of the order of the discharge angle of inclination × vibration intensity, vibration angle × Vibration intensity, discharge angle × vibration direction angle.