选粉机分级室内的颗粒运动特性  

Motion Characteristics of the Particles in the Classification Chamber of a Classifier

作　　者：童聪[1] 李双跃[1] 李翔[2] 杨军[1] 

机构地区：[1]西南科技大学制造科学与工程学院,四川绵阳621010 [2]西南科技大学应用技术学院,四川绵阳621010

出　　处：《过程工程学报》2013年第4期574-579,共6页The Chinese Journal of Process Engineering

基　　金：国家科技支撑计划基金资助项目(编号:2011BAA04B04);国家科技计划基金资助项目(编号:09C2621502330)

摘　　要：在分析SLK5500型选粉机结构和分级机理的基础上,通过构建选粉机分级室模型,根据计算流体力学理论,运用DPM模型与非稳态算法求解颗粒运动轨迹,阐述了不同粒径的颗粒群在分级室内的运动特性.考察了选粉机分级室内的流场速度分布,并捕捉颗粒计算了风量和转速对细粉颗粒产率和80μm筛余的影响,模拟结果与实验结果基本相符,验证了模型的可靠性.Based on the analysis of structure and classification mechanism of SLK5500 classifier, its classification chamber model is built. According to the computational fluid dynamics, discrete particle model is used to simulate trajectory of particles with unsteady method. Motion characteristics of the particles in the classification chamber are shown, and velocity distribution of the classification chamber is studied. According to the particles trapping computation, the effects of air volume and rotator speed on fine particles productivity and 80 um residue are obtained, and the simulation method is verified, its results agree with experimental results.

关 键 词：选粉机 分级室 颗粒群 运动特性 

分 类 号：TB44[一般工业技术]