Extruder for the continuous handling and/or processing of free-flowing materials
AssigneeBlach Verwaltungs GmbH & Co. KG
InventorJosef Blach
Life of this patent
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Abstract
An extruder has parallel, corotating shafts (3) along a circle which are equipped with elements consisting at least partly of screw elements (1) closely intermeshing over their whole circumference. At least one screw element is formed as a passage screw element (6) with recesses (8) in the screw crest, screw core and/or screw flank. Downstream thereof is an element inhibiting the product flow in the flight of the passage screw element (6).
Claims21
An extruder for continuously working and/or processing flowable materials having at least three corotating shafts parallel to the extruder axis and disposed in a cavity of an extruder housing along a circle or circular arc with the same central-angle distance which are equipped with elements consisting at least partly of closely intermeshing screw elements whose end face is limited by circular arcs corresponding to the outside screw diameter, the screw core diameter and maximally the center distance of the screw elements, the extruder housing being provided on the radially inner and outer sides of the cavity with concave circular segments parallel to the extruder axis, on which the screw elements are tightly guided, and the extruder having at one end at least one supply port leading to the cavity, characterized in that at least one screw element is formed as a passage screw element (6) by stock removal (8) on the screw crest, screw core and/or screw flank, and an element is provided for inhibiting the product flow in the flight of the passage screw element (6):
(canceled)
Dependencies are inferred from the claim text.