Patent ID: 6123448
Filing Date: 2000-09-26
Classification: B01F,B63H

Abstract:
An agitator for mixing and/or conveying aggressive liquids and/or liquids containing solids or fibers comprising a drive motor housed by a housing, a drive shaft of said drive motor projecting beyond an axial end of said housing, a propeller boss carried by said drive shaft and defining a circumferential gap with said housing axial end, said propeller boss and housing having adjacent outer peripheral surfaces of substantially similar diameters, a deflector ring defined by a circumferentially extending radially innermost ring mounting portion and a circumferentially extending radially outermost gap covering and sealing portion, said ring mounting portion being located in said circumferential gap, said covering and sealing portion spanning said gap and having oppositely axially directed sealing lips, one of said sealing lips being in sealing contacting relationship with said housing outer peripheral surface, another of said sealing lips being in sealing contacting relationship with said boss outer peripheral surface, said deflector ring being made of elastomeric material, and an outermost circumferential surface of said deflector ring being exteriorly convexly curved in the form of an aerofoil converging axially toward ends of each of said sealing lips.