二阶非对称双螺杆挤出机三维仿真  

Three dimensional simulation analysis of second order differential twin screw extruder

作　　者：于淼 郭树国[1] 王丽艳[1] YU Miao;GUO Shu-guo;WANG Li-yan(Faculty of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang,Liaoning 110142,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142

出　　处：《食品与机械》2021年第5期111-114,共4页Food and Machinery

基　　金：辽宁省自然科学基金(编号:2019-ZD-0085)。

摘　　要：设计了一种带有混炼元件的二阶非对称双螺杆挤出机,并运用Solidworks建立实体模型,以有限体积法为基础,采用ANSYS/CFX有限元分析软件模拟豆粕在机筒内的运动与加工过程,并进行实验验证。结果表明:当恒定温度为80℃时,新型双螺杆挤出机由于混炼元件、差速非对称流场以及一、二阶段螺槽容积差的存在,产生了交替分布的压力,物料不断被拉伸与压缩并经历多次分割、重组,提高了新型双螺杆挤出机压缩能力和分散混合能力。The second order asymmetric double screw extruder with mixing element is designed,and the solid model is established by using Solidworks.Based on the finite volume method,the ANSYS/CFX finite element analysis software was used to simulate the movement and processing process of soybean meal in the machine barrel,which was verified by the experiments.Results:when the constant temperature was 80℃,the new double-screw extruder produces alternating pressure due to mixing elements,differential asymmetric flow field and volume difference of the first and second stage screw grooves.The material was continuously stretched and compressed and undergoes multiple segmentation and recombination,which improved the compression ability and dispersion mixing ability of the new double-screw extruder.

关 键 词：双螺杆挤出机 混炼元件 有限体积法 CFX 流场分析 

分 类 号：TS203[轻工技术与工程—食品科学]