Effects of screw end face structural parameters on polylactic acid flow field in meshing counter rotating twin screw extruder

Authors

ZHANG Yi-wei, School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Eualuation Technology, Beijing 100048, China
HUANG Zhi-gang, School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Eualuation Technology, Beijing 100048, ChinaFollow
SHANG Jia-wei, School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Eualuation Technology, Beijing 100048, China
LIU Zhong-yao, School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Eualuation Technology, Beijing 100048, China
YANG Ya-nan, School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Eualuation Technology, Beijing 100048, China

Corresponding Author(s)

黄志刚（1966—），男，北京工商大学教授，博士。E-mail:huangzg@btbu.edu.cn

Abstract

Objective: To investigate the effect of the screw configuration on the polylactic acid flow field on the structural parameters of the screw on the end face of the screw in the meshing counter rotating twin screw extruder. Methods: The theoretical model of the heterodirectional double-ended threaded element was established by Solidworks software and the geometry of the threaded element after adjusting the structural parameters in two different ways. The established three-dimensional model was imported into Gambit software for meshing, and then Polyflow software was applied to the flow field simulation calculation. Finally, the flow field distribution results were extracted by Fieldview software, and the effects of the adjustment of the structural parameters on the end surface of the threaded element during correction were compared and analyzed on the shear rate field, viscosity field and speed field. Results: The structural parameters of the threaded element during correction will affect the polylactic acid flow field after being adjusted in two ways. The two adjustment methods of structural parameters have reduced the shear rate gradient in the runner to varying degrees, and the first method has also caused the viscosity of the polymer lactic acid in the runner to be reduced. Conclusion: From the perspective of the influence on the shear rate field, viscosity field and speed field, the threaded element adjusted by mode one is more conducive to extrusion, while the solid configuration of the threaded element adjusted by mode two is closer to the theoretical configuration of the threaded component.

Publication Date

6-5-2023

First Page

71

Last Page

76,88

DOI

10.13652/j.spjx.1003.5788.2022.90260

Recommended Citation

Yi-wei, ZHANG; Zhi-gang, HUANG; Jia-wei, SHANG; Zhong-yao, LIU; and Ya-nan, YANG (2023) "Effects of screw end face structural parameters on polylactic acid flow field in meshing counter rotating twin screw extruder," Food and Machinery: Vol. 39: Iss. 4, Article 13.
DOI: 10.13652/j.spjx.1003.5788.2022.90260
Available at: https://www.ifoodmm.cn/journal/vol39/iss4/13

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