Continuous mixer
AssigneeUSM Corporation
InventorGary T. Markhart
Life of this patent
Estimating the term…
Abstract
Apparatus for mixing powdered and liquid materials to form slurries comprising a mixer body having an inlet for such materials and parallel mixing chambers extending to a discharge outlet. Rotors are mounted for rotation in the chambers and include feed sections leading from the inlet to mixing sections and to the outlet. The mixing section of each rotor includes a first lobed mixing portion having short advancing helices, and reverse helices adapted to quickly wet and pressurize the mixture to force entrapped air back through inlet. The mixing section also has a second mixing portion having an increased number of lobes following the first portion to increase the mixing action and shear on the mixture. The second mixing section is followed by a lobed discharge section adapted to impel the mixture through the outlet.
Claims5
Mixing apparatus comprising a body having an inlet opening for admitting materials to be mixed into one end of a pair of parallel cylindrical chambers and having an outlet opening at the opposite end of the chambers for discharging material mixed in the chambers, and elongate rotors mounted for rotation in the chambers;
- each rotor having a screw-like feed section communicating with the inlet opening, a lobed section for mixing the material fed by the feed section and a discharge section communicating with the outlet;
- the mixing section of each rotor having a first mixing portion comprising lobes equally spaced about the rotor and extending helically to advance the material a short distance until the helices of the lobes are reversed a longer distance whereby the material is pressurized to force trapped gases back toward the inlet, the first mixing portion of the lobes being followed by a second mixing portion having an increased number of lobes equally spaced about the rotor and arranged in a short section of advancing helices followed by a longer section of reversed helices for increasing the mixing and shearing action on the material, the second portion of the mixing section being merged into a final straight lobed discharge section for impelling the mixed material through the discharge outlet.
Dependencies are inferred from the claim text.