基于抛撒时间的变产量干燥滚筒的调速特性分析  

Analysis on speed-regulation characteristics of the variable output rotary dryer based on scattering time

作　　者：吴铭禧 房怀英[1] 侯建强 黄文景 杨建红[1] WU Ming-xi;FANG Huai-ying;HOU Jian-qiang;HUANG Wen-jing;YANG Jian-hong(School of Electromechanical and Automation Engineering,Huaqiao University,Xiamen 361021;Fujian South Highway Machinery Co.,Ltd.,Quanzhou 362000)

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021 [2]福建南方路面机械股份有限公司,福建泉州362000

出　　处：《机械设计》2022年第3期38-45,共8页Journal of Machine Design

基　　金：福建省高校产学合作项目(2020H6012,2021H6029);福建省科技重大专项专题(2020YZ017022);深圳市科技攻关项目(JSGG20201103100601004)。

摘　　要：为研究变产量干燥滚筒的调速特性,用单位时间内的总抛撒时间表征该时间内抛撒颗粒与热烟气的总换热时间,利用离散元素法,对不同工况的变产量干燥滚筒进行仿真研究,并分析了不同扬料叶片对应滚筒的调速特性。仿真分析结果表明:两种叶片的可调产量范围相同,V型缺口叶片的有效调速范围更大,V型缺口叶片的调速灵敏度随转速变化的稳定性更好。因此,V型缺口叶片的调速特性更好,可以更有效地通过调速适应产量的变化。In this article,in order to explore the speed-regulation characteristics of the variable output rotary dryer,the total heat-exchange time between the scattered particles and the hot flue gas is characterized by means of the total scattering time in the scope of unit time.The method of discrete element is used to simulate the variable output rotary dryer under different working conditions,and the speed-regulation characteristics of the dryer corresponding to different lifting blades are explored.These simulation results show that the adjustable output range of the two kinds of blades is same;the effective speed-regulation range of the V-notch blade is larger,and the speed-regulation sensitivity of the V-notch blade is better with the change of speed.Therefore,the V-notch blade has better speed-regulation characteristics and adapts to the change of output more effectively.

关 键 词：变产量 干燥滚筒 抛撒时间 调速特性 

分 类 号：U415.52[交通运输工程—道路与铁道工程]