基于EDEM的螺旋输送机输送效率和能耗分析

Analysis of conveying efficiency and energy consumption of screw conveyor based on EDEM

为研究水平管式螺旋输送机的输送效率和能耗影响因素,并寻找输送机的最佳运动学参数(进料速度、转速、螺距和螺旋直径),通过改变输送机的4种参数,在离散元软件EDEM中模拟仿真,以输送一定质量物料所需的时间和能耗为双试验指标进行正交试验,考察分析参数与输送机输送效率、能耗之间的相应变化关系。研究表明:螺旋直径对螺旋输送机的输送效率和能耗影响最大,进料速度、螺距和转速也有积极影响,但不如螺旋直径明显,较优的参数组合方案是螺距200 mm,转速80 r/min,进料速度8.1 t/h,螺旋直径210 mm(物料填充率44%)。研究为更好地设计水平螺旋输送机,在提升其输送效率、降低能耗上提供参考。

In order to study the influence factors of the horizontal tube screw conveyor such as the transmission efficiency and energy consumption,and to find the best kinematic parameters(feed speed,rotational speed,pitch of screw and screw diameter),By changing the four parameters of the conveyor and performing simulation in the discrete element software EDEM,the orthogonal test was carried out with time and power needed to deliver material particles of certain quality as the indexes of the two tests.The corresponding changes between these parameters and the conveyor conveying efficiency and energy consumption were analyzed,and it is concluded that the screw diameter has greatest effect on the transport efficiency and energy consumption of the screw conveyor,and the feed speed,pitch and rotational speed also have positive effects on conveying efficiency and energy consumption,but not as remarkable as the screw diameter.The better parameter combination scheme is screw pitch 200 mm,rotational speed 80 rpm/min,feed speed 8.1 t/h,screw diameter 210 mm(material filling rate 44%).The research provides a reference for the better design of horizontal screw conveyor,improvement of transmission efficiency and reduction of energy consumption.