组合式通风打磨台风量对粉尘控制效果的影响

打磨作业过程中，利用组合式通风打磨台进行通风除尘已得到广泛应用，但大多根据经验设置通风参数。以数值模拟为研究手段，采用CFD-DPM风流-粉尘耦合数值模拟方法，研究粉尘最大浓度和呼吸带粉尘浓度与风量分配和总排风量的关系，对组合式通风打磨台进行通风除尘系统参数优化，为金属打磨粉尘治理提供依据。研究结果表明:当组合式通风打磨台总排风量为1 850 m3·h-1、台面与壁面的配风比K=1.67时，粉尘质量浓度较低，防尘效果最好。

Influence of air volume on dust control effect for combined ventilation grinding table

In the process of grinding operation, the dust removal by ventilation with the combined ventilation grinding table has been widely used, but the ventilation parameters have almost been set according to the experience. Taking the numerical simulation as the research means, the relationship of the maximum dust concentration and dust concentration at breathing zone with the air volume distribution and total exhaust air volume were studied by using the CFD-DPM airflow dust coupling numerical simulation method, and the parameters optimization of ventilation dust removal system was carried out on the combined ventilation grinding table, so as to provide the foundation for the control of metal grinding dust. The results showed that when the total exhaust air volume of the combined ventilation grinding table was 1,850 m3/h, and the air distribution ratio of table surface and wall surface was 1.67, the mass concentration of dust was relatively low, with the best effect of dust prevention.