Patent ID: 9108170
Filing Date: 2015-08-18
Classification: B01F

Abstract:
1. A mixing impeller for an agitator, the impeller comprising: an annular body having a top, a bottom opposite the top and a central aperture; a central hub that connects with a shaft, the hub being co-axial with the central aperture of the body; a plurality of inner vanes connected to one of the top and the bottom of the body, the inner vanes having proximal ends connected to the hub and radially spaced-apart distal ends, the inner vanes positioning the hub in place, the inner vanes being configured to promote movement of liquid from the bottom of the body, through said aperture, and towards the top of the body; and a plurality of radially spaced-apart, longitudinally curved, channel-shaped outer vanes connected to and extending outwards from the body in a plurality of different directions, each of the outer vanes having a proximal end adjacent to the body and a distal end spaced-apart from the body, and each of said outer vanes being curved in a direction extending between its proximal end and its distal end.