Abstract:

Based on the discrete element method, this paper uses modeling software Solidworks and discrete element simulation software EDEM to simulate the transport movement of solid particles in a single?screw extruder. The research includes the influence of material parameters such as the shape and size of the particles, the screw speed, and structural parameters such as the number of screw edges and the inclination angle of the screw edges on the solid transport capacity, as well as the movement and filling of the particles inside the barrel. The results show that the single screw?barrel model has the best particle size and the best particle shape; the smaller the particle size, the better the filling effect; the maximum particle transport capacity is when the spiral angle is 105°.

Key words: Discrete element method, Single screw, Particle transport

摘要：

基于离散单元法，利用建模软件Solidworks、离散单元模拟软件EDEM，对单螺杆挤出机固体颗粒输送运动进行模拟。研究内容包括物料参数如颗粒的形状、大小，螺杆转速，结构参数如螺棱数量、螺棱倾角对固体输送量的影响，以及机筒内部颗粒的运动和填充情况。结果表明，单一螺杆?机筒模型存在最佳颗粒粒径、最佳颗粒形状；颗粒直径越小，填充效果越好；螺棱倾角为105°时颗粒输送量最大。

关键词: 离散单元法, 单螺杆, 颗粒输送