摘要
利用EDEM软件对一种普通锥形和两种双锥型螺杆挤出机固体输送段进行模拟。分析了高密度聚乙烯(PEHD)颗粒在锥形双螺杆挤出机内的运动状态和分布规律。对比分析了3种锥形螺杆挤出的质量流速率、填充率、平均速度、平均压力、平均剪切应力和力矩等参数,给出了普通型和双锥型螺杆挤出机固体输送机理以及主要影响因素。结果表明,相比于普通锥形双螺杆挤出机,双锥型螺杆挤出机颗粒具有相对较小的轴向速度变化、较强的建压能力和较高的体积填充,适用于剪敏性材料的加工。
The solid conveying section of a common cone and two double cone screw extruders was simulated using the EDEM software. The motion state and distribution law of PE-HD particles in a conical twin-screw extruder were analyzed.The parameters of mass flow rate,filling rate,average speed,average pressure,average shear stress and torque of three conical screw extruders were investigated comparatively,and the solid conveying mechanism of ordinary and double conical screw extruders and the corresponding influence factors were discussed. The results indicated that compared to the ordinary conical twin-screw extruder,the twin-conical screw extruder exhibited relatively smaller axial velocity changes,stronger pressure building capacity,and higher volume filling. This is suitable for the processing of shearing-sensitive materials.
作者
王颢霖
朱向哲
WANG Haolin;ZHU Xiangzhe(School of Mechanical Engineering,Liaoning University of Petroleum and Chemical Technology,Fushun 113001,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2022年第4期83-88,共6页
China Plastics
关键词
锥形双螺杆
EDEM软件
固体输送
输送效率
conical twin screw
EDEM software
solid conveying
conveying efficiency
