Rotor-stator mixing apparatus especially for single screw extruder

A single screw extruder comprises a mixer associated with the screw, and comprising a rotor driven by the screw and a stator, the rotor and the stator each carrying mutually facing interengaging rings of teeth whereby the material is urged outwardly from the screw along a first tortuous mixing path,...

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Bibliographic Details
Main Author HILDER ROBIN
Format Patent
LanguageEnglish
Published 08.07.2003
Edition7
Subjects
MAKING GRANULES OR PREFORMS
MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED
RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:A single screw extruder comprises a mixer associated with the screw, and comprising a rotor driven by the screw and a stator, the rotor and the stator each carrying mutually facing interengaging rings of teeth whereby the material is urged outwardly from the screw along a first tortuous mixing path, and then returned inwardly to the screw along a second tortuous mixing path, with the teeth extending axially, or generally so, with respect to the longitudinal axis of the screw. The invention also includes a mixer comprising a cylindrical stator chamber having opposed, radially extending faces provided with axially projecting, radially spaced-apart rings made up of alternating teeth and ridges, a rotor rotatably fitted within the stator and provided on its opposite side faces with axially projecting, radially spaced-apart rings of alternating teeth and ridges with the rotor and stator rings interengaging with both radial and axial clearance so as to define a tortuous material flow path.
Bibliography:Application Number: US20010830138