对辊制粒机压辊的有限元分析及优化  

The Finite Element Analysis and Optimization of the Press Roller of Roller Granulator

作　　者：李延民[1,2] 蔡志源 霍征征 刘国宁 LI Yan-min;CAI Zhi-yuan;HUO Zheng-zheng;LIU Guo-ning(School of Mechanical and Power Engineering,Zhengzhou University,He’nan Zhengzhou 450001,China;He’nan Zhengzhou Mining Machinery Co.,Ltd.,He’nan Zhengzhou 450007,China)

机构地区：[1]郑州大学机械与动力工程学院,河南郑州450001 [2]河南郑矿机器有限公司,河南郑州450007

出　　处：《机械设计与制造》2024年第1期90-94,共5页Machinery Design & Manufacture

基　　金：河南省产学研重点支持项目(172107000008)。

摘　　要：对辊制粒机的压辊在工作过程中由于受交变载荷作用寿命往往较短,为改善压辊受力状况,根据对对辊制粒机制粒成型过程的分析以及对压辊受力状况的研究,建立了压辊的力学模型;在此基础上,以某型对辊制粒机为初始模型,通过有限元软件Abaqus探究了压辊表面应力分布情况,并进一步对其长径比及支撑方式进行了优化,结果表明:压辊长径比为1.034时,最大应力比初始模型减小了8.92%,单侧支撑改为双侧支撑可使最大应力减小65.31%,因此这两种优化方式对提高压辊的使用寿命具有重要参考价值。The life of the press roller of roller granulator is often short due to the alternating load.In order to improve the stress state of the press roller,a mechanical model of the roller was established according to the analysis of the granulating process of the roller pelleting mechanism and the study of the stress state of the roller.On this basis,taking a certain type of roller granula-tor as the initial model,the surface pressure distribution of the press roller was investigated by finite element software Abaqus,and the length-diameter ratio and support mode of the press roller were further optimized.The results show that when the length-diameter ratio of the press roller is 1.034,the maximum stress is reduced by 8.92%compared with the original model,and the change of unilateral support to bilateral support can reduce the maximum stress by 65.31%.Therefore,these two optimization methods have important reference value for improving the service life of press roll.

关 键 词：对辊制粒机 压辊 模孔 长径比 有限元 

分 类 号：TH16[机械工程—机械制造及自动化] TH164