新型行星式搅拌器开发及性能研究

介绍了新型行星式搅拌器的结构和设计原理。该新型搅拌器有一个传动轴和数个行星叶轮组成,行星轮自转的驱动力来自液体阻力,行星叶轮自转速度的大小与公转速度、公转半径和自转半径有关,而与行星叶轮高度无关;自转方向与公转方向相反。测试采用IKA EUROSTAR power control搅拌装置和Labword软件,试验介质为水和甘油。通过对搅拌器的搅拌性能试验研究发现,流体质点的轴向流线为高速螺旋线,主要流型为径向流和轴向流,因此,在主轴转速较低的情况下被搅拌液体亦可获得满意的混合效果。通过对试验数据分析处理,得到测试用行星式搅拌器的功率准数、混合时间数、排液量和循环量等搅拌性能曲线及经验公式。

Development and performance research of new planetary agitator

The structure and design principle of new planetary agitator were introduced.The new agitator is made up of one transmission shaft and several planetary impellers,the rotation driving power of planetary impeller comes from liquid resistance,and the rotation speed is in relationship with revolution speed,revolution radius and rotation radius,but independent of the height of planetary impeller.The rotation direction is in opposition to revolution direction.The mixing performance of the new planetary agitator was studied through experiments by using IKA EUROSTAR power control mixer and Labword software with water and glycerol as medium.The results show that the axial flow line of the fluid particle is high-speed spiral-line,and the main flow pattern is radial flow and axial flow,so a satisfactory mixing result can be gotten even at low speed of main axis.According to the experimental results,the mixing performance curves and empirical formulas were found for power quasi-number,mixing time number,liquid drainage quantity and liquid circle quantity.