纺织学报 ›› 2009, Vol. 30 ›› Issue (05): 52-57.

• 纺织工程 • 上一篇    下一篇

纺粘法工艺中气流场的探讨

许宝锋   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-05-15 发布日期:2009-05-15

Study of airflow field in spunbond process

XU Baofeng   

  • Received:1900-01-01 Revised:1900-01-01 Online:2009-05-15 Published:2009-05-15

摘要: 为了解气流的实际运动情况,借助基于有限元分析的计算机软件对纺粘法非织造布生产中的工艺性气流进行探讨。模拟试验结果证实,激冷室里的气流规律与传统观念不同,实际上并没有均匀的水平方向的吹风;上部的风速明显低于下半部;抽吸风道的风量对激冷室内的气流场有着不应忽视的影响。牵伸风道里的风速很高,但比较稳定。扩散风道内的气流对包括结构尺寸、工艺参数和调整状态都很敏感,关键问题是要使高速气流平稳扩散和减速,避免在扩散风道内尤其是网面形成涡流。

Abstract: In order to understand the actual movement state,the process airflow in spunbond is studied by dint of computer software based on finite element analysis. The results substantiate that the rule of airflow in quench area differ from the idea of traditional chemical fiber process. There is no even horizontal wind in practice. Wind speed of upside less than lower consumedly. The effect of exhaust quantity on flow field is visible. The wind speed in draft path is very high,but keeps stable. The airflow in diffuse area is very subtle for structure dimension, adjusted state and process parameter. The main thing is to diffuse the high speed airflow and restrain the turbulence in diffuse area, especially on the net surface.

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