基于DEM的谷物三维并联振动筛筛分效果研究

中国机械工程 ›› 2013, Vol. 24 ›› Issue (08): 1018-1022.

基于DEM的谷物三维并联振动筛筛分效果研究

李菊1;赵德安1;沈惠平2;邓嘉鸣2

1.江苏大学,镇江,212013
2.常州大学,常州,213016

出版日期:2013-04-25 发布日期:2013-05-08
基金资助:
“十二五”国家科技支撑计划项目（2011BAD20B06);国家自然科学基金资助项目(51075045);江苏高校优势学科建设工程资助项目(苏政办发〔2011〕6号)
The National Key Technology R&D Program（No. 2011BAD20B06）
National Natural Science Foundation of China（No. 51075045）

Research on Screening Effect of Grain Three Dimensional Parallel Vibrating Screen Based on DEM

Li Ju1;Zhao Dean1;Shen Huiping2;Deng Jiaming2

1.Jiangsu University,Zhenjiang,Jiangsu,212013
2.Changzhou University,Changzhou,Jiangsu,213016

Online:2013-04-25 Published:2013-05-08
Supported by:

The National Key Technology R&D Program（No. 2011BAD20B06）
National Natural Science Foundation of China（No. 51075045）

摘要/Abstract

摘要：

依据筛面、稻谷籽粒和短茎秆的实物结构与材料特性建立了分析模型,基于离散元法（DEM）模拟和分析谷物筛分过程;研究了基于并联机构振动筛的8种组合运动形式对谷物筛分的影响规律;综合考虑了筛分效率与时间的关系及清洁率对筛分效果的影响，提出了筛分效果的评定方法;应用该评定方法来分析三维运动筛面的筛分效果，所得结论为多维振动筛面运动形式的选择提供了参照。

关键词: 离散单元法, 三维运动, 并联振动筛, 筛分效果

Abstract:

According to the physical structure and material properties of screen surface, rice grain and short stalk,an analytical model was established.
Based on DEM,the process of grain screening was simulatied and analysed.Then the
influences of eight kinds of combined motion form on grain screening was studied
based on parallel mechanism of vibrating screen.In comprehensive consideration of the cleaning and the relationship between screening efficiency and time, the evaluation
methods of screening effect was put forward. By using the evaluation method,the screening effect of the three dimensional motion screen was analyzed.The conclusion provides reference for the choice of multidimensional vibrating screen.

Key words: discrete element method（DEM）, three-dimensional motion, parallel vibrating screen, screening effect

中图分类号:

TH112
TD452

李菊1, 赵德安1, 沈惠平2, 邓嘉鸣2. 基于DEM的谷物三维并联振动筛筛分效果研究[J]. 中国机械工程, 2013, 24(08): 1018-1022.

LI Ju-1, DIAO De-An-1, CHEN Hui-Beng-2, DENG Jia-Ming-2. Research on Screening Effect of Grain Three Dimensional Parallel Vibrating Screen Based on DEM[J]. China Mechanical Engineering, 2013, 24(08): 1018-1022.

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