回转组合多层筛风道系统仿真分析

利用流体动力学分析软件(FLUENT)对回转组合多层筛风选通道内气流速度、气流方向进行了仿真模拟,得到回转组合多层筛风道系统流道的速度云图。通过观察分析速度云图,发现上沉降室内气流速度不稳定,沉降区速度过大,不能有效沉降轻杂。研究发现上挡风板尺寸及其与进风口的距离直接影响着上沉降室气流速度大小和气流分布状态,经优化后上沉降区域的气流速度明显降低,低速区增大,涡流减少,有效提高了杂质沉降效率和降低能耗。

Simulation analysis of duct system of rotary multilayer sieve

The airflow velocity and airflow direction in the duct of rotary multi-layer sieve were simulated and analyzed by fluid dynamics analysis software FLUENT. By observing and analyzing the velocity cloud chart, it is found that the air velocity in the settling chamber was not stable and too high to settle the light impurities. It was found that the air velocity and air flow distribution in the chamber were affected directly by the dimension of the upper wind shield and the distance between the upper wind shield to the inlet of air. The air velocity in the settling chamber was reduced obviously after being optimized by enlarging the settling chamber, reducing the vortex, therefore improving the impurity sedimentation efficiency and reducing the energy consumption.