基于离散单元法的平摆筛设计及其透筛机理分析

发布时间：2017-12-27 06:01

本文关键词：基于离散单元法的平摆筛设计及其透筛机理分析　出处：《机械设计与研究》2016年01期 　论文类型：期刊论文

【摘要】：为提高振动筛的筛分性能,对振动筛筛面的振动形式和筛分过程中的透筛环节进行了研究分析。由于筛分系统是一个复杂随机过程,限于物理实验的发展,颗粒在筛面上重要的运动信息如位移,速度难获得,利用基于离散单元法(Discrete Element Method,DEM)的EDEM软件,对创新型的筛面以摆动与平动复合的振动筛分过程进行了数值模拟,提出透筛概率的概念,建立并分析筛机的振动参数与透筛概率的数学关系。对筛分过程中透筛机理的研究,可以更好地理解筛分过程,为分析筛分机理及筛机参数化设计提供理论基础。
[Abstract]:In order to improve the sieving performance of the vibrating screen, the vibration form of the sieves and the screening link in the screening process are studied and analyzed. The screening system is a complex stochastic process, limited to the development of physical experiment, particles on the sieve surface motion information such as displacement, velocity is difficult to obtain, use based on the discrete element method (Discrete Element Method, DEM) of the EDEM software, the screen surface of the innovative to swing and translational composite vibration screening process a numerical simulation is proposed through the concept of probability sieve, and establish the mathematical relationship through sieve probability analysis of vibration sieve machine parameter. The screening process can be better understood by the study of the screening mechanism in the screening process, which provides a theoretical basis for the analysis of the screening mechanism and the parametric design of the screening machine.
【作者单位】：华侨大学机电及自动化学院;
【基金】：国家自然科学基金资助项目(51175190) 福建省科技平台建设资助项目(2013H2003)
【分类号】：TH237.6
【正文快照】： 振动筛广泛应用于农业、采矿、冶金和建材等行业中。目前振动筛存在筛分性能不强的问题,提高了处理能力,筛分效率降低;增大筛分效率,其处理量降低,提高筛分效率和增大处理能力一直都是振动筛分的目标。过去常采用筛机大型化和提高振动强度来提高筛分性能,不可避免带来筛机结构

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