基于Rocky DEM的松散润叶筒内抄板作用的模拟与优化  

Simulation and Optimization of the Shoveling Plate Effect in Conditioning Cylin der Using Rocky DEM

作　　者：潘凡达[1] 沈凯[1] 樊虎[1] 李旭[1] 胡世豪 蒋明洋 金浩 邹剑峰 PAN Fanda;SHEN Kai;FAN Hu;LI Xu;HU Shihao;JIANG Mingyang;JIN Hao;ZOU Jianfeng(China Tobacco Zhejiang Industrial Company Limited,Hangzhou 310024,China;Chemical Engineering Institute,East China University of Science and Technology,Shanghai 200237,China;Shanghai Anshi Asia Pacific Huizhi Technology Company Limited,Shanghai 200126,China)

机构地区：[1]浙江中烟工业有限责任公司,浙江杭州310024 [2]华东理工大学化学工程系,上海200237 [3]上海安世亚太汇智科技股份有限公司,上海200126

出　　处：《化学反应工程与工艺》2024年第1期66-76,共11页Chemical Reaction Engineering and Technology

基　　金：中国烟草总公司重点研发项目(110202102042);浙江中烟工业有限责任公司科技项目(ZJZY2021A006)。

摘　　要：为深入研究松散润叶筒内叶片在抄板上的掉落过程,提升叶片的耐加工性,利用三维建模软件建立松散润叶筒三维模型,通过Rocky 2021 R2离散元仿真软件创建薄片柔性叶片进行数值模拟,对叶片在松散润叶筒内抄板上的运动进行可视化计算。根据抄板上叶片的持料量百分比曲线和落料速率曲线,将叶片的掉落过程分为两个阶段。结果表明:片状颗粒的受力区别于刚性球体间的点对点接触受力,叶片形状不可忽略;松散润叶筒转速为15 r/min时,叶片在筒体底部分布较少,筒体上半部分分布较多;抄板安装角度为80°时,板上持料量增多,抄板倾角较合理,增温增湿效果最优;松散润叶筒倾角对叶片在抄板上掉落的轴向速度影响显著。通过仿真得出叶片在抄板上掉落过程的优化参数,有助于松散润叶过程调控,指导实际工业生产。In order to study the dropping process of leaves in the conditioning cylinder on the shoveling plate and improve the processing resistance of leaves,modeling software was used to establish a three-dimensional model of the conditioning cylinder,thin sheet flexible leaves were created by Rocky 2021 R2 discrete element simulation software for numerical simulation,and the movement of leaves in the conditioning cylinder on the shoveling plate was visualized.According to the percentage curve of leaves holding capacity and the curve of leaves dropping rate,the leaves dropping process could be divided into two stages.The results showed that the force of sheet particles was different from the point-to-point contact force between rigid spheres,and the shape of leaves could not be ignored.When the rotation speed of the conditioning cylinder was 15 r/min,the leaves distributed less in the bottom of the conditioning cylinder,but more in the upper part of the conditioning cylinder.When the shoveling plate mounting angle was 80°,the amount of material on the shoveling plate increased,the shoveling plate dumping angle was reasonable,and the leaves embellish effect was optimal.The inclination angle of conditioning cylinder had a significant effect on the axial velocity of leaves falling on the shoveling plate.This study can provide a reference for the follow-up study on the residence time of leaves in the conditioning cylinder.The optimized parameters of tobacco leaves falling on the shoveling plate were obtained by simulation,which were helpful to control the loose and moist leaves process and guide the actual industrial production.

关 键 词：片状叶片 离散元法 Rocky离散元仿真软件 抄板 数值模拟 

分 类 号：TS432[农业科学—烟草工业]