Patent ID: 6334705
Filing Date: 2002-01-01
Classification: B01F

Abstract:
A mixing impeller which provides for dispersion of a first fluid differing from a second fluid when said fluids are mixed by said impeller, which impeller comprises:a plurality of blades oriented with respect to an axis about which said impeller rotates to provide axial flow of said fluids, said blades having leading and trailing edges and width between said edges and being pitched to produce said axial flow, at least one of said blades having a Venturi rotatable therewith and defining a flow path between said leading and trailing edges, said flow path having a width which converges in a direction from said leading to said trailing edge in which said second fluid is sheared and from which said second fluid is dispersed into said first fluid during mixing of said fluid by said impeller; wherein a funnel structure defines said Venturi, said funnel structure having a larger opening and a smaller opening and converging between said openings in a direction from said leading to said trailing edges, said larger and smaller openings being in a size ratio which is in the range from substantially two to one to four to one.