中国塑料2025，Vol.39Issue(5)：101-106,6.DOI:10.19491/j.issn.1001-9278.2025.05.016
平行差速三螺杆挤出机流体混合特性研究
Study on fluid mixing characteristics of parallel differential three-screw extruder
摘要
Abstract
In this paper,a parallel differential tri-screw extruder with a speed ratio of 1/5/5 was designed.This tri-screw extruder has a geometric structure and asymmetry of rotational speed.To explore the unique flow field characteristics,the designed tri-screw extruder was compared with the parallel differential tri-screw extruder with a speed ratio of 1/1/5 and the differential twin-screw extruder with a speed ratio of 1/5.The results indicated that,compared to the traditional extruders,the parallel differential tri-screw extruder exhibited a unique complex particle trajectory along with the appear-ance of a phenomenon of"secondary flow"shown by a circumferential velocity field in the meshing zone appears due to the particularity of the structure and the different speeds.This makes the material in the runner reciprocate together with an increase in the residence time of the material in the runner.These results were conducive to the mixing of materials.When calculating the mixing performance parameters of three sets of parallel differential screw extruders,the parallel dif-ferential tri-screw extruder with a speed ratio of 1/5/5 were found to have better mixing performance.关键词
平行差速三螺杆/流体混合特性/分散混合/分布混合Key words
parallel differential tri-screw/fluid mixing characteristics/dispersion mixing/distribution mixing分类
化学化工引用本文复制引用
秦晓宇,朱向哲,陈博涵,王宇宇..平行差速三螺杆挤出机流体混合特性研究[J].中国塑料,2025,39(5):101-106,6.基金项目
国家自然科学基金(5197031333) （5197031333）
