Determining and matching of rational parameters of double-row blades mixer

In order to eliminate the inefficient zone of the forced mixer and improve mixing quality and efficiency of concrete, based on the structure of double-row blades, the influence of mixer's parameters on mixing performance was analyzed by theoretical analysis and orthogonal test, the rational range and matching relationship of the parameters were recommended. The results indicate that setting angle of main blades, arrangement relation between main blades and secondary blades, phase angle of adjacent mixing arms on single shaft and arrangement of mixing arms on double shafts are the key parameters. For prevalent twin-shaft mixer, it is suggested that axial angle and radial angle of main blades should be 45iaand 35ia, secondary blades sho35iaand 45ia, relations between main blades and secondary blades should be diverse radius and equidirectional, phase angle on single shaft should be 90ia, mixing arms arrangement on dou shafts should be parallel, length-breadth ratio of mixing trough should be more than 1, mixing velocity should be 1.2 m/s. 2 tabs, 7 figs, 9 refs.