Rotary disc slurry pump

Claim 1

A rotary disc incompressible fluid pump for pumping an incompressible fluid medium, said pump comprising in combination: a housing, having a pair of circular end walls disposed in spaced apart parallel planes and connected together by a peripheral wall defining a cylindrical rotor chamber having a constant radius at any selected plate between said end walls; an inlet formed in one of said end walls coaxially of said chamber, an outlet having a rectangular cross sectional configuration and a width equal to the width of the chamber communicating with and extending tangently outwardly from the peripheral wall of said housing at the outer diameter of said chamber, and a rotary disc impeller coaxially mounted in said chamber for rotation therein and comprising a plurality of coaxially disposed discs each defined by opposed continuous planar faces and an outer diameter no more than about ten percent less than the diameter of the rotor chamber and a central opening coaxially thereof defining an inner diameter, said discs are connected together closely adjacent said inner diameter, and mounted for rotation about their axis and positioned for contact with fluid in said chamber, and the planar faces of said discs defining the impelling force on said fluid and being spaced apart sufficient to permit the passage of fluid borne articles from said inlet through said central opening and between at least some of said discs to the outlet, and means connecting said second disc to said first disc for rotation therewith and defining with the inner surfaces of said discs and said housing peripheral wall an unobstructed annular chamber of uniform cross-sectional shape extending radially outward therefrom for conveyance of said articles from said inlet to said outlet.