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PDF(1130 KB)
PDF(1130 KB)
两段串联涡流空气分级机操作参数对其分级性能的影响
Effect of operational parameters on the classification performance of a two-stage turbo air classifier in series
依据涡流空气分级机的分级理论，通过物料实验研究了两段串联涡流空气分级机系统喂料速度、两段转笼转速组合、两段进口风速组合等操作参数对其分级性能的影响。结果表明：分级精度和切割粒径随喂料速度的增大而降低；无论两段转笼转速差值保持恒定或增大，切割粒径和分级精度都随二段转笼转速的增大而减小；二段进口风速大于一段进口风速，存在“鱼钩”效应。
The operational parameters for a two-stage turbo air classifier include feeding speed, combinations of the rotor cages rotation speeds and combinations of the air inlet velocities. According to classification theory of turbo air classifiers, the effect of varying the operational parameters on the classification performance of a turbo air classifier in series was studied experimentally. The experimental results show that when the feeding speed is increased, the classification precision and cut size decreased; when difference between the rotation speeds of the two-stage rotor cage is constant or increased, classification precision and cut size decreased with decreasing ratation speed of the second-stage rotor cage; when the air inlet velocity of the second-stage classifier is higher than that of the first-stage classifier, there is a "fishhook" effect.
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