Importance

Loading Importance Indicators...

Abstract

A dynamic mixer in which two members (1,2) are rotated relative to each other about a predetermined axis (XX), the members having facing surfaces (15, 16) which extend axially and between which is defined a mixing chamber through which a flow path extends between an inlet (7) for material to be mixed and an outlet (8). An array of two or more mixing formations is defined on at least one of the facing surfaces (15, 16) which extend radially towards the facing surface of the other element (15, 16) and which act to mix material within the mixing chamber, and which extend axially generally parallel to the axis. A mixing formation thus defined is configured to provide a constricting flow passage followed by an expanding flow passage to material present in the mixing chamber as the first and second members are relatively rotated, with the mixing formations located around the axis on any plane perpendicular to the axis so as to provide a generally net balance of the radial loads imparted by material present in the space between the surfaces. The material within the mixing chamber is subjected to high extensional and or shear stresses arising from the circumferential drag flow induced between the closely separated facing surfaces, while being permitted to flow axially between the widely separated flowing surfaces. Dispersive mixing and distributive mixing effects are thereby obtained.

Loading the Abstract Image...

First Claim