中国塑料 ›› 2025, Vol. 39 ›› Issue (6): 42-47.DOI: 10.19491/j.issn.1001-9278.2025.06.009

• 加工与应用 • 上一篇    下一篇

塑料吹膜机均流板位置对排气影响的仿真研究

布泽华1, 李世勇2, 刘金军2, 赵昊宇1, 邹佳男1, 李红霞1()   

  1. 1.大连理工大学机械工程学院,辽宁 大连 116024
    2.大连橡胶塑料机械有限公司,辽宁 大连 116036
  • 收稿日期:2024-12-12 出版日期:2025-06-26 发布日期:2025-06-20
  • 通讯作者: 李红霞(1982-),女,副教授,研究方向:关键构件计算与优化、复杂工况耦合与仿真等,hxli@dlut.edu.cn
    E-mail:hxli@dlut.edu.cn
  • 基金资助:
    大连市重点科技研发计划项目(2024YF20CG046)

Simulation study on influence of position of homogenizing plate in plastic film blowing machine

BU Zehua1, LI Shiyong2, LIU Jinjun2, ZHAO Haoyu1, ZOU Jianan1, LI Hongxia1()   

  1. 1.School of Mechanical Engineering,Dalian University of Technology,Dalian 116024,China
    2.Dalian Rubber & Plastics Machinery Co,Ltd,Dalian 116024,China
  • Received:2024-12-12 Online:2025-06-26 Published:2025-06-20
  • Contact: LI Hongxia E-mail:hxli@dlut.edu.cn

摘要:

以某型号吹膜机为例,考虑吹膜机内部风场与温度场的耦合作用,建立吹膜机三维风场有限元计算模型,分析吹膜机内部风场和温度场特性,研究吹膜机内部均流板位置对出风口压力、速度,以及温度的影响规律。结果表明,随着均流板高度的增加,出风口的平均压力与平均速度变化不大,呈略上升趋势;静压箱间出风口的速度分布会呈现先均匀后分散的趋势;均流板的位置对出风口温度与各静压箱内出风口的速度分布影响不大。

关键词: 塑料薄膜, 吹膜机械, 均流板, 有限元, 流固耦合

Abstract:

This study reported an investigation on a specific model of a blown film machine, considering the coupled interaction between its internal wind field and temperature field. A three⁃dimensional finite element model of the wind field was developed to analyze the characteristics of both the wind and temperature fields. Additionally, the research examines how the positioning of the flow⁃equalizing plate within the machine influences the pressure, velocity, and temperature distribution at the air outlet. The results indicated that increasing the height of the flow⁃equalizing plate led to minimal changes in the average pressure and velocity at the air outlet, with both parameters exhibiting a slight upward trend. Furthermore, the velocity distribution across the air outlet between static pressure boxes demonstrates an initial trend toward uniformity before transitioning to dispersion. Notably, the position of the flow⁃equalizing plate has negligible impact on both the air outlet temperature and the velocity distribution within individual static pressure boxes.

Key words: plastic film, film blowing machinery, homogenizing plate, finite element, fluid?structure interaction

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