Feeder module in planetary roller extruder design
AssigneeEntex Rust & Mitschke GmbH
InventorHarald Rust
Life of this patent
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Abstract
A planetary roller extruder section forms a feed part of an extruder. The planetary roller extruder has an internally toothed housing and an externally toothed central spindle disposed centrally within and at a distance from the housing. Planetary spindles are arranged to rotate in a void between the central spindle and the housing. Each planetary spindle has an external toothing meshing with both the housing and the central spindle. At least one planetary spindle has two axially spaced areas with less than a full set of teeth. Those axially spaced areas include a first area having a first number of teeth and a second area having a second number of teeth. The second number of teeth is less than a full set of teeth and more than the first number of teeth.
Claims11
A planetary roller extruder section forming a feed part of an extruder, comprising:
- an internally toothed housing;
- an inlet opening extending through the internally toothed housing;
- an externally toothed central spindle disposed centrally within and at a distance from the housing;
- and
- planetary spindles arranged to rotate in a void between the central spindle and the housing, each planetary spindle having an external toothing meshing with both the housing and the central spindle,
- wherein at least one planetary spindle comprises at least two axially spaced areas including
- a first area having a first number of teeth, the first number of teeth being less than a full set of teeth, and
- a second area having a second number of teeth, the second number of teeth being less than a full set of teeth and more than the first number of teeth, and
- wherein the first area of the at least one planetary spindle is arranged at an axial osition of the inlet opening.
Dependencies are inferred from the claim text.