Abstract
Objective: Analyze the movement of the material particles on the linear vibrating screen to optimize the mechanism of the linear vibrating screen. Methods: Based on the discrete element method, the EDEM software is used to simulate and analyze the movement of the material particles on the linear vibrating screen. In response to the stacking angle, the discrete element simulation parameters of the simulated material particles were calibrated in the form of batch processing. The SolidWorks software was used to establish the three-dimensional model of the linear vibrating screen, and the material falling height on the screen surface and the shape and size of the material particles were used as Variable. Taking the smoothness of the material particles on the screen surface as an indicator, through simulation, observed the movement speed and position distribution of the material particles on the drying screen surface. Results: The velocity distribution of the single spherical particles was relatively large. After reaching the stable stage of vibrating screening, the velocity distribution of the single spherical corn particles was relatively stable, and the particle beating phenomenon was significantly reduced. The velocity distribution of the double-spherical corn particles was relatively small, and the position of the double-spherical corn particles fluctuated more obviously after reaching the stable stage of sieving. The speed of double-spherical corn particles on the vibrating screen was significantly lower than that of single-spherical corn particles, and single-spherical corn particles with different falling heights had a certain effect on the vibrating screen. Conclusion: In the design process of linear vibrating screening, different heights and different particle shapes have a greater impact on the screening efficiency. Based on the discrete element method, the vibrating screening of materials can be effectively analyzed.
Publication Date
10-28-2021
First Page
89
Last Page
92
DOI
10.13652/j.issn.1003-5788.2021.10.016
Recommended Citation
Bing, WANG
(2021)
"Analysis and simulation of corn vibrating screen based on DEM,"
Food and Machinery: Vol. 37:
Iss.
10, Article 16.
DOI: 10.13652/j.issn.1003-5788.2021.10.016
Available at:
https://www.ifoodmm.cn/journal/vol37/iss10/16
References
[1] 鲍春永. 基于DEM的振动筛分过程机理研究[D]. 徐州: 中国矿业大学, 2016: 14-15.
[2] 孙鹏. 基于离散元理论的振动筛分过程数值仿真研究[D]. 昆明: 昆明理工大学, 2012: 20-21.
[3] 李洪昌, 李耀明, 唐忠, 等. 基于EDEM的振动筛分数值模拟与分析[J]. 农业工程学报, 2011, 27（5）: 117-121.
[4] 王中营, 任宁, 武文斌, 等. 基于离散元法的往复振动筛筛分效果研究[J]. 农机化研究, 2016, 38（1）: 33-38.
[5] 刘瑞, 闫俊霞, 陈国强, 等. 基于离散元法的玉米颗粒振动筛分过程模拟研究[J]. 轻工机械, 2019, 37（3）: 31-34, 40.
[6] 史朋波. ZKB型直线振动筛的结构动力学分析及优化设计[D]. 邯郸: 河北工程大学, 2018: 18-19.
[7] 王晓伟, 张路霞. 基于ADAMS的直线振动筛虚拟样机仿真分析[J]. 粮油加工（电子版）, 2014（10）: 65-67.
[8] 江海深, 赵跃民, 张博, 等. 基于DEM的筛面与物料特性在筛分过程中协同作用的研究[J]. 矿山机械, 2014, 42（1）: 83-87.
[9] 李小冬, 童昕, 王桂锋. 基于DEM的振动参数对颗粒筛分分层与透筛的研究[J]. 矿山机械, 2012, 40（5）: 83-89.
[10] 沈国浪, 李占福, 童昕, 等. 基于DEM的振动筛振动参数对分层质量的影响[J]. 煤炭科学技术, 2017, 45（5）: 217-222.
[11] 沈国浪, 童昕, 李占福. 基于离散单元法对振动筛仿真实验次数分析[J]. 机械设计与研究, 2019, 35（2）: 110-112, 116.
[12] 刘义伦, 苏家辉, 赵先琼, 等. 基于离散元法的振动筛的筛分效率研究[J]. 东北师大学报（自然科学版）, 2018, 50（4）: 78-83.
[13] 夏欢. 直线振动筛的工作原理与运动学参数选择[J]. 机械工程与自动化, 2012（6）: 164-165.