6Ⅰ型转子密炼机流场瞬态流动分析  

Transient Flow Analysis of Flow Field in 6Ⅰ-tpye Rotor Internal Mixer

作　　者：何延东[1] 刘万锁 朱向哲[1] HE Yandong;LIU Wansuo;ZHU Xiangzhe(School of Mechanical Engineering,Liaoning Shihua University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001

出　　处：《中国塑料》2018年第11期89-95,共7页China Plastics

基　　金：国家自然基金项目(51473073,51303075)。

摘　　要：采用瞬态流场分析方法,对6I型转子密炼机的流场和转子进行分析,得到不同时刻流场速度矢量图、剪切速率云图,以及特殊点的速度与压力曲线,并对不同位置的流线进行分析。结果表明,密炼机中间混合区的流场混合不只受到棱顶的挤压作用,棱部前端产生的推进流也会促进该区域的混合;转子长棱两端的泄流作用使得棱部产生弯曲变形,这大大影响了转子棱部的应力分布;转子棱顶部的形状会很大程度影响转子工作时的轴心位置,以及棱根部的应力分布;长短棱的轴向泄流虽然不利于棱部拖拽流的形成,但是泄流对于整体的混合流动具有积极作用,中棱处能产生最多的螺旋上升流,无论位于何处都可以汇聚大量流体并引导其轴向流动。The flow field and rotor of 6I rotor internal mixer were analyzed by a transient analysis method,and the velocity vector diagram,shear rate cloud map,velocity and pressure curves at specific points were obtained at different time.The flow lines at different positions were also analyzed.The results indicated that the mixing effect of flow field in the middle mixing zone was not only influenced by the extrusion of the top of edge,but also promoted by the propelling flow from the front of edge.The discharge of the long edges resulted in bending deformation of edge,which greatly affects the stress distribution in the rotor edge.The axis position of rotor and the stress distribution at the root were greatly influenced by the shape of the top of rotor.Although the axial discharge of the long and short edges was disadvantageous to the formation of the drag and drop flow,the discharge generated a positive effect on the overall mixing flow.Most of spiral upwelling was produced at the middle edge,which could gather a large number of fluids and guide the axial flow at any positions.

关 键 词：密炼机 瞬态 流场 流线 

分 类 号：TQ320.5[化学工程—合成树脂塑料工业]