[1]贺占蜀,余金龙,陈江义,等.基于离散元法的立轴冲击式破碎机的破碎仿真[J].郑州大学学报(工学版),2021,42(06):56-61.[doi:10.13705/j.issn.1671-6833.2021.04.019]
　He Zhanshu,Yu Jinlong,Chen Jiangyi,et al.Simulation of Vertical Shaft Impact Crusher Crushing Process Based on Discrete Element Method[J].Journal of Zhengzhou University (Engineering Science),2021,42(06):56-61.[doi:10.13705/j.issn.1671-6833.2021.04.019]

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基于离散元法的立轴冲击式破碎机的破碎仿真()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

42

期数:

2021年06期

页码:

56-61

栏目:

出版日期:

2021-11-10

文章信息/Info

Title:

Simulation of Vertical Shaft Impact Crusher Crushing Process Based on Discrete Element Method

作者:

贺占蜀; 余金龙; 陈江义; 杨聪俐; 刘万辉; 吉宏志

郑州大学机械与动力工程学院;河南黎明重工科技股份有限公司;

Author(s):

He Zhanshu; Yu Jinlong; Chen Jiangyi; Yang Congli; Liu Wanhui; Ji Hongzhi;

1.School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China; 2.Henan Liming Heavy Industry Technology Co., Ltd., Zhengzhou 450001, China

关键词:

立轴冲击式破碎机; 离散元法; 破碎率; 转子功率; 颗粒甩出速度

Keywords:

vertical shaft impact crusher;  discrete element method;  crushing rate;  rotor power;  velocity of particle ejection

DOI:

10.13705/j.issn.1671-6833.2021.04.019

文献标志码:

A

摘要:

首先通过软件CATIA建立立轴冲击式破碎机简化模型，然后基于离散元软件EDEM黏结接触模型对立轴冲击式破碎机进行破碎仿真，即分析瞬态的破碎过程又探究不同转子直径、转子转速、入料粒径和入料量对颗粒甩出速度、破碎率和转子功率的影响规律，并且分析颗粒甩出速度与破碎率之间的关系，最后将实际转子功率与仿真转子功率进行对比，验证仿真结果的可靠性。结果表明，破碎率随着转子转速和转子直径的增大而提高、随着入料量的增加而降低、随着入料粒径的增大先提高后降低；转子功率随着转子转速、转子直径和入料量的增大而大幅增大。综合考虑破碎率与转子功率，本文仿真范围内转子转速1600r/min、转子直径1100mm、入料粒径30mm、入料量160t/h为最优组合参数。

Abstract:

In order to improve the quality of sand product, the crushing process of the vertical shaft impact crusher was simulated. The transient crushing process of the vertical shaft impact crusher and the reason of particle breakage were analyzed; and the influence laws of different rotor diameters, rotor speeds, feed particle sizes and feed rates on the velocity of particle ejection, crushing rate and rotor power were investigated. In addition, the relationship between velocity of particle ejection and crushing rate was analyzed and the reliability of the simulation results was verified. The results show that particles could be accelerated by the rotor and thrown towards the wall of the crushing chamber, not only the violent collision between the high-speed particles and the wall of the crushing chamber, but also the violent collision between different particles make the particles broken up after being thrown out. With the increase of rotor speed and rotor diameter, the crushing rate increased; while with increase of the feed rate, the crushing rate decreased; with the increase of feed particle size, the crushing rate increased at first and then decreased. In addition, with the increase of rotor speed, rotor diameter and feed rate, the rotor power would increase greatly while the feeding particle size had no effect on rotor power; the simulation rotor power was basically consistent with the actual rotor power. Considering the crushing rate comprehensively, when rotor speed was 1 600 r/min, rotor diameter was 1 100 mm, feed particle was 30 mm and feed rate was 160 t/h, this set of parameters was optimal in this paper.

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