ECM30双转子连续混炼机转子及嵌入块结构对分散混合性能的影响  

Influence of Structure of Rotors and Inserted Blocks on Dispersive Mixing Performance of ECM30 Two-rotor Continuous Mixers

作　　者：刘晓鸣[1] 谢林生[1] 马玉录[1] 曹文凤[2] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237 [2]江苏工业学院机械工程学院,江苏常州213016

出　　处：《中国塑料》2007年第2期96-103,共8页China Plastics

摘　　要：计算比较了双转子连续混炼机不同转子结构和嵌入块时的轴向速度分布、剪切应力和混合指数的分布，得到了转子结构和嵌入块的嵌入深度对ECM30双转子连续混炼机分散混合性能的影响。转子螺棱交汇区的长度减小，其流场的剪切作用增强，拉伸作用减小；转子螺棱包角增加，转子的返混能力增加，剪切和拉伸作用减小。增加嵌入块的高度，返混能力增强，剪切作用增加，拉伸作用减小。In this page, through simulation of the 3-D isothermal flow in mixing section of two-rotor continuous mixer-ECM30, the distribution of axial velocity, shear stress, and mixing index were obtained, based on which the dispersive performance of two-rotor continuous mixer in terms of axial velocity, shear stress, and mixing index were estimated. Compared the results from simulation about flow field of different rotors and inserted blocks, the influence of structure of rotor and inserted block on dispersing performance in mixing section of two-rotor continuous mixer-ECM30 was found as follows： the shear flow increased and the elongation flow decreased with decreasing length of rotor convergence sections, the shear flow and tension flow decreased with increasing angle of rotor. With the height of inserted block increased, the back flow, shear flow increased, and tension flow decreased.

关 键 词：双转子连续混炼机 转子结构 嵌入块结构 三维等温流动 分散混合性能 

分 类 号：TQ320.5[化学工程—合成树脂塑料工业]