中国塑料 ›› 2023, Vol. 37 ›› Issue (8): 61-68.DOI: 10.19491/j.issn.1001-9278.2023.08.009

• 加工与应用 • 上一篇    下一篇

基于离散单元法一字排列三螺杆挤出机固体输送段输送机理分析

王颢霖(), 王廷玺   

  1. 辽宁北方华丰特种化工有限公司,辽宁 抚顺 113003
  • 收稿日期:2023-02-13 出版日期:2023-08-26 发布日期:2023-08-21
  • 作者简介:王颢霖(1993—),男,硕士研究生,从事高效节能石化设备的研究,wanghaolin2432@163.com
    第一联系人:地址:北京市海淀区阜成路11号《中国塑料》杂志社广告部
    邮编:100048

Conveyor analysis of solids conveying section of three⁃screw extruder based on discrete unit method with one⁃character arrangement

WANG Haolin(), WANG Tingxi   

  1. Liaoning North Huafeng Special Chemical Co,Fushun 113003,China
  • Received:2023-02-13 Online:2023-08-26 Published:2023-08-21

摘要:

利用离散单元法对计量加料下一字排列三螺杆挤出机固体输送段进行模拟。分析了聚合物颗粒在一字排列三螺杆挤出机正位移输送和摩擦拖曳输送2种输送机理下的输送情况,计算出一字排列三螺杆挤出机的输送特性参数,并与双螺杆挤出机进行对比分析。结果表明,由于三螺杆挤出机啮合区的增加,提高了颗粒在挤出机螺槽内的填充率。一字排列三螺杆挤出机在填充程度、质量流速率等方面均优于双螺杆挤出机,并且输送产量大约为双螺杆挤出机的1.3倍,在聚合物加工行业具有较好的工程应用前景。

关键词: 一字排列三螺杆, 离散单元法, 固体输送, 输送机理

Abstract:

The solids conveying section of a single⁃aligned three⁃screw extruder under metering and dosing was simulated using a discrete unit method. The transport performance of polymer particles was analyzed through both positive displacement conveying and friction drag conveying in a one⁃screw extruder. The conveying characteristics parameters of the mono⁃aligned three⁃screw extruder were calculated and then compared with those of a conventional twin⁃screw extruder. The results indicated that the filling rate of the particles in the screw groove of the extruder was increased with an increase in the engagement zone of the three⁃screw extruder. The mono⁃aligned triple⁃screw extruder exhibited better performance of the twin⁃screw extruder in the aspects of the filling degree and mass flow rate, and its conveying output was approximately 1.3 times that of the twin⁃screw extruder. This indicates a promising prospect of engineering application in the polymer processing industry.

Key words: one?way alignment of three screw, discrete unit method, solids conveying, conveyor theory

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