超细磨喂料装置流场分析与数值实验研究

Flow Field Analysis of and Numerical Experiments on Feeding Device of Ultra-fine Mill

针对超细磨实际运行中电机出现的过流现象,运用计算流体力学(CFD)技术,对超细磨的进料装置的流场进行分析,指出过流现象是由于物料颗粒通过进料装置时因堵塞所照成。利用正交实验设计的方法进行了数值实验。通过方差分析得到出口压力、转速、出口压力与喂料量的交互作用对喂料的连续性影响最显著。数值实验表明:出口压力为-1 000 Pa、喂料量为0.10 kg/min、转速为1 000 r/min时为最佳工况。

There is over current in the motor of an ultra-fine mill when it is the computational fluid dynamic technology to analyze the flow field of its working. feeding To solve the problem, we use device. We point out that the problem is caused by the block of particles in the feeding device. We use the orthogonal experiment to carry out nu- merical experiments. The variance analysis results show that outlet pressure of the feeding device, its rotational speed and the interaction between the outlet pressure and th ing continuity. The numerical experiments show that the e feeding volume have the greatest influence on its feed- feeding device works best when its outlet pressure is - 1 000 Pa; its feeding volume is0. 10 kg/h and its rotational speed is 1 000 r/min.