摘要
为了提高棉纺异纤分拣机的分拣效果,采用数值模拟分析法,对异纤分拣机废棉通道结构进行仿真优化,并结合异纤机结构特点提出5种优化方案。结果表明:废棉风机压力为300 Pa,补风口完全打开时,流场较佳;减小连接通道出口宽度、入口段长度和连接通道高度均有利于提高连接通道内的流场效果;结合减小入口段长度和连接通道高度这两种方法,可减弱气流速度衰减,确保将异纤带入剔除通道;优化剔除通道内壁面后,随着废棉风机压力增大,入口段速度减小,整体速度角度增大,更利于对异纤的剔除;采用双废棉风机,压力150 Pa时异纤剔除效果好。认为:采用该优化方案对异纤分拣机废棉通道进行优化改进,有利于提升异纤分拣机的分拣效果。
In order to improve sorting effect of cotton spinning foreign fiber sorter,waste cotton channel structure of the foreign fiber sorter was simulated and optimized by using numerical simulation analysis method.Five optimization schemes were proposed according to structural characteristics of foreign fiber sorter.The results showed that flow field was better when pressure of the waste cotton fan was 300 Pa and the air supply inlet was fully opened.Decreasing outlet width,length of inlet section and height of connecting channel was beneficial to improve flow field effect in the connecting channel.Combined with the latter two methods,attenuation of air flow velocity could be reduced to ensure that foreign fibers were brought into the removal channel.After optimizing the inner wall surface of removal channel,with the increase of waste cotton fan pressure,speed of the inlet section was decreased and the overall speed angle was increased,which is more beneficial to the removal of foreign fibers.Adopting double waste cotton fans,foreign fiber removal effect was better when the pressure was 150 Pa.It is considered that adopting the optimized scheme for optimization and improvement of waste cotton channel of the foreign fiber sorter is beneficial to improve sorting effect of the foreign fiber sorter.
作者
孙戬
姜博艺
张守京
胡胜
SUN Jian;JIANG Boyi;ZHANG Shoujing;HU Sheng(Xi'an Polytechnic University,Xi'an,710048,China)
出处
《棉纺织技术》
CAS
北大核心
2022年第11期28-31,共4页
Cotton Textile Technology
基金
中国纺织工业联合会科技指导性项目(2020072)
西安市现代智能纺织装备重点实验室建设项目(2019220614SYS021CG043)
西安工程大学博士科研启动基金(BS201804)。
关键词
棉纺
异纤分拣机
废棉通道
数值模拟
补风口
速度分布
速度角度
cotton spinning
foreign fiber sorter
waste cotton channel
numerical simulation
air supply inlet
velocity distribution
velocity angle
