中国塑料 ›› 2025, Vol. 39 ›› Issue (11): 125-130.DOI: 10.19491/j.issn.1001-9278.2025.11.019

• 机械与模具 • 上一篇    

大型双螺杆挤压造粒机组螺杆组合分析算法及应用

毕超1(), 赵冲1, 邬明均2, 嵇耀2, 滕祖荣2, 左仕博1, 殷德举1   

  1. 1.北京化工大学,北京 100029
    2.南京高精齿轮集团有限公司,南京 211103
  • 收稿日期:2024-11-21 出版日期:2025-11-26 发布日期:2025-11-21
  • 作者简介:毕超,博士,副教授,主要研究领域:高分子材料加工装备,bichao@mail.buct.edu.cn

Analysis of screw configuration for a large ϕ 380 twin⁃screw extrusion granulation unit using flow balance algorithm

BI Chao1(), ZHAO Chong1, WU Mingjun2, JI Yao2, TENG Zurong2, ZUO Shibo1, YIN Deju1   

  1. 1.Beijing University of Chemical Technology,Beijing 100029,China
    2.Nanjing High Speed Gear Manufacturing Co Ltd,Nanjing 211103,China
  • Received:2024-11-21 Online:2025-11-26 Published:2025-11-21

摘要:

介绍了一种螺杆组合分析算法。该算法在获得螺杆元件工作性能数据库的基础上,通过区分元件的输送特性,得到物料的填充状态。并根据填充状态得到给定工况下的相关性能的评价指标,包括填充及压力分布状态、螺杆剪切塑化能力、物料反作用载荷、螺杆运行功率和比能耗等方面。应用该算法对ϕ380大型双螺杆挤压造粒机组用于PE造粒的典型螺杆组合进行了分析。为系统性构建螺杆组合分析算法提供了有效的理论支持。

关键词: 双螺杆, 螺杆组合分析, 填充度分布, 压力分布

Abstract:

This paper reports a screw configuration analysis algorithm designed for large⁃scale twin⁃screw extrusion systems. By leveraging a performance database of screw elements, the algorithm identifies material conveying characteristics to determine the filling state within the extruder. Based on this filling state, it evaluates key operational metrics under specified processing conditions, including: filling degree and pressure distribution, shear⁃induced plastication capability, material backpressure and torque load, drive power consumption, and specific mechanical energy input. The algorithm is applied to analyze a typical screw configuration used in a ϕ380 mm twin⁃screw extrusion granulation unit for polyethylene. The findings provide a robust theoretical foundation for the systematic development and optimization of screw configuration analysis in large⁃scale extrusion processes.

Key words: twin?screw, screw configuration analysis, distribution of the filled rate, distribution of pressure

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