Device for dispersing, suspending or emulsifying gases, liquids and/or flowable solid substances, more particularly for wetting and dispersing powders in liquids

A device suitable for combining substances that are alike or different to obtain a mixed product, the device comprising a rotor casing having an inner surface, a rotor hub rotatable about an axis within the rotor casing, the rotor hub having opposed surfaces and a peripheral outer edge, a mixing chamber partially defined by the inner surface and the rotor hub peripheral outer edge, at least one outer rotor blade extending from the inner surface and into the mixing chamber, at least one inner rotor blade extending from the rotor hub peripheral rotor outer edge and into the mixing chamber, a perforated stator positioned between the outer and inner rotor blades and having openings therein, and first and second substance supply ducts adjacent the opposed surfaces of the rotor hub, the outer rotor blade having a greater axial dimension than the inner rotor blade, the rotor hub peripheral outer edge being spaced from the stator and the inner rotor blade being closer to the stator than the rotor hub peripheral outer edge.