【摘要】 文章对有挡板条件下常用的桨式、涡轮式、折桨式、推进式搅拌器采用桨槽径比为0.4—0.6,大于传统的1∶3的结构参数,还有双层桨的形式,进行搅拌功率曲线的测绘。另外对桨叶上开孔、管形桨、弧面桨、半管形桨的正、反两面进行搅拌器的功率曲线测绘,共24条曲线。详细介绍了功率曲线测绘设备的结构形式和各种参数比,以供设计搅拌器时使用;说明了较大的桨槽径比及双层桨叶在实际生产应用中的重要意义,对不同结构搅拌器的功率准数进行了对比,并说明了应用NP-Re曲线的注意事项。更多还原

【Abstract】 The mixing power curves of different types of mixers with baffles were plotted,including impeller type,turbine type,folding impeller type,impulse type with a wheel/tank diameter ratio of 0.4-0.6 which is higher than that with 1 ∶3 of conventional ones,and dual-layer impeller types.The power curves of mixers with different impellers,including impeller with holes on blade,tubular impeller,arc impeller,and front-back surface half-pipe impeller,were plotted.The total is 24 curves.The construction type and various parameter ratios of plotting equipment were introduced for reference in mixer design.The significance of higher wheel/tank diameter ratio and dual-layer impeller in practice was explained.The power numbers of mixers with different construction were compared.Some information and advices were presented for the application of NP-Re curve.更多还原