FIELD: mechanical engineering; pumps. SUBSTANCE: fluidizing blade is arranged axially outwards relative to working blade. Delivering blade in installed radially outwards relative to fluidizing blade and it passes along part of axial length of fluidizing blade. Delivering blade is installed at angle between 1 and 89 degrees relative to axis of impeller. Each delivering blade is made helical. Impeller has many fluidizing blades installed to form central axial hole. EFFECT: enlarged operating capabilities. 3 cl, 2 dwg
