本文以气体动力和离心力为工作原理设计并制造了粉体离心分级机,对其分级效果进行了研究,并给出了评价分级效率的无量纲判据——有效系数η。试验结果表明,离心分级机可以分离窄粒级的细颗粒,具有比较精确的分级界限,而且能采用流体动力学控制分级过程。 In this paper, the centrifugal force of centrifugal force and centrifugal force as the working principle of the design and manufacture of powder centrifugal grading machine, the grading effect of its research, and gives a rating criteria to evaluate the non-dimensional criterion - the effective coefficient η. The experimental results show that the centrifugal classifier can separate fine particles with narrow particle size, have more accurate classification limits, and can control the classification process with hydrodynamics.