Impeller of flotation concentrator

The impeller comprises an upper impeller assembly, a lower impeller assembly and a separation disc, upper blades are matched with an upper wheel disc in a sliding and inserted mode, tip blades are fixed to the tops of the upper blades, the lower blades are matched with the upper wheel disc in a sliding and inserted mode, the included angle between any pair of lower blades is A, and the included angle between any pair of lower blades is B; the included angle between every two adjacent pairs of lower blades is B and Alt; b. According to the impeller, the abrasion degree is low, the upper blade and the lower blade serve as parts extremely prone to abrasion and are both installed in a sliding and inserting mode, replacement is convenient, the cost can be reduced, on one hand, the tip blade can enhance the liquid flow cutting capacity and increase the bubble generation amount of the upper blade, and then the effect of reducing impeller loss is achieved, and on the other hand, the effect of reducing the impeller lo