Patent ID: 8496189

Claim:
A mixing apparatus for mixing solids and liquids comprising: a mixing chamber defined within a plurality of sides radially arranged about a central axis, the mixing chamber comprising an eductor, the eductor comprising a first chamber inlet separated along the central axis from a chamber outlet by a frusta conical venturi throat arranged coaxial with a central axis, wherein the diameter of the venturi throat increases from the first chamber inlet to the chamber outlet; the first chamber inlet radially arranged about the central axis and having an inlet diameter; the chamber outlet radially arranged about the central axis and having an outlet diameter which is greater than the inlet diameter; the eductor further comprising a second chamber inlet disposed through an outer wall of the venturi throat, and located between the first chamber inlet and the chamber outlet; the second chamber inlet being in fluid communication with the first chamber inlet and the chamber outlet; and the second chamber inlet radially arranged about a second chamber inlet axis oriented perpendicular to the central axis, the second chamber inlet having a plurality of second inlet opening diameters, each determined perpendicular to the central axis at the point at which the second chamber inlet intersects with an outer wall of the venturi throat, wherein the second inlet diameters is less than the diameter of the venturi throat at the points at which the second chamber inlet intersects with the venturi throat and the second inlet opening diameters increase in a direction away from the central axis.