辽宁石油化工大学学报 ›› 2023, Vol. 43 ›› Issue (1): 54-60.DOI: 10.12422/j.issn.1672-6952.2023.01.010

• 机械工程 • 上一篇    下一篇

新型单螺杆挤出机组合螺杆混合特性分析

邹思雨(), 任建民(), 朱向哲   

  1. 辽宁石油化工大学 机械工程学院,辽宁 抚顺 113001
  • 收稿日期:2022-03-10 修回日期:2022-07-20 出版日期:2023-02-25 发布日期:2023-03-13
  • 通讯作者: 任建民
  • 作者简介:邹思雨(1995⁃),女,硕士研究生,从事高效节能石化设备方面的研究;E⁃mail:1759503040@qq.com
  • 基金资助:
    辽宁省教育厅科学研究项目(L2019020)

Analysis of Mixing Characteristics of Combined Screw of New Single Screw Extruder

Siyu Zou(), Jianmin Ren(), Xiangzhe Zhu   

  1. School of Mechanical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2022-03-10 Revised:2022-07-20 Published:2023-02-25 Online:2023-03-13
  • Contact: Jianmin Ren

摘要:

螺杆的几何构型对单螺杆挤出机混合特性具有重要的影响。选取三种具有特殊构型的六菱形螺纹元件、四菱形螺纹元件和齿形螺纹元件,设计了三种针对不同加工工艺要求的新型单螺杆挤出机组合螺杆,研究了聚乳酸在三种组合螺杆中的流动和混合特性。结果表明,在组合螺杆压力交界处产生了较大的压力梯度;菱形螺纹元件可为物料提供高拉伸作用,流体在流道中停留时间较短,混合性能较差;齿形螺杆元件既可为物料提供高剪切作用,也可提供高拉伸作用,停留时间较长,混合效果较好。

关键词: 单螺杆挤出机, 螺杆组合, Polyflow软件, 数值模拟

Abstract:

Screw geometry has an important influence on the mixing characteristics of single screw extruder. Three kinds of six rhombic thread elements, four rhombic thread elements and tooth thread elements with special configuration were selected to design three new combined screws of single screw extruder for different processing requirements, and the flow and mixing characteristics of polylactic acid in the three combined screws were studied. The results show that there is a large pressure gradient at the pressure junction of the combined screw, the diamond thread element can provide high tensile action for the material, the residence time of the fluid in its channel is short, and the mixing performance is relatively poor; the toothed screw element can not only provide high shear effect but also high tensile effect for materials, with long residence time and good mixing effect.

Key words: Single screw extrude, Screw combination, Polyflow software, Numerical simulation

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引用本文

邹思雨, 任建民, 朱向哲. 新型单螺杆挤出机组合螺杆混合特性分析[J]. 辽宁石油化工大学学报, 2023, 43(1): 54-60.

Siyu Zou, Jianmin Ren, Xiangzhe Zhu. Analysis of Mixing Characteristics of Combined Screw of New Single Screw Extruder[J]. Journal of Liaoning Petrochemical University, 2023, 43(1): 54-60.

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               https://journal.lnpu.edu.cn/CN/Y2023/V43/I1/54