基于气固两相DEM模型的相对旋转式喂料头的研究

Feeder Head of Relative Rotary Based on Gas-Solid Two Phase DEM Model

以一种目前普遍使用的高效相对旋转式喂料头为研究对象,研究了喂料头的工作机理和颗粒在喂料头中的动力学分析,并分析其气固两相DEM模型及其耦合仿真方法.通过该喂料头的表面数据,得到了实物原型的三维模型以及喂料曲面的展开方程,并考察不同的喂料曲面展开线,利用EDEM+Fluent软件耦合仿真分析,推荐了在不同摩擦因数下使用的喂料曲面的曲线方程,并对输送量和喂料量进行研究,推导出喂料头的输送量公式,得到喂料头的转速公式.

Taking a common relative revolving feeder head as research object,the work mechanism of the feeder head and the material kinematics in the feeder head were analyzed in this paper.Firstly,the gas-solid two phase DEM model and coupled simulation method were studied.Then a 3D model of physical feeder and spread equation of the feeding surface were established.Finally,considering the surface data of the feeder head,the coupling simulation analysis was carried out with EDEM+Fluent software.As a research result,this paper recommends a curve equation of the feeding surface with different friction coefficients,deduces an equation for the transport quantity of the feeder head based on the transport and feeding quantity analysis,and presents an equation for rotate speed of the feeder head.The results provide an important guidance for the feeder head design.