Extruder with groove rotor and stator
AssigneeConenor Oy
InventorKari Kirjavainen
Life of this patent
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Abstract
A method and an apparatus for extruding material, the material being extruded with an apparatus comprising at least one rotatable rotor and at least one stator, the rotor and the stator comprising grooves, whereby the grooves make the material move through the apparatus when the rotor is rotated. The rotor and stator surfaces facing each other have a wavelike cross-section, and the grooves are so arranged that at the ridge of a wave the depth of a groove reaches its maximum, and at the bottom of a wave the depth reaches its minimum. The bottom of the wave in the rotor is at the ridge of the wave in the stator and vice versa. This makes the material move alternately from a rotor groove to a stator groove, and back.
Claims23
A method of extruding material, the method comprising
- providing an apparatus comprising at least one rotor and at least one stator, the rotor and stator comprising grooves, the rotor and stator surfaces facing each other having an outermost surface with a wavelike cross-section, and the rotor and stator grooves being so arranged that at the ridge of a wave, the depth of a groove reaches its maximum, and at the bottom of a wave, the depth of a groove reaches its minimum, and the bottom of the wave in the rotor is at the ridge of the wave in the stator and vice versa,
- extruding the material with the apparatus by rotating the rotor and causing the rotor and stator grooves to interact, the interacting grooves making the material to move through the apparatus by subjecting the material to move during extruding from a first rotor groove to a first stator groove, and from the first stator groove to a subsequent rotor groove and from the subsequent rotor groove to a subsequent stator groove.
An apparatus for extruding material, the apparatus comprising:
- at least one rotatable rotor and at least one stator, the rotor and the stator comprising grooves,
- wherein rotation of the rotor causes an interaction of the grooves to make the material move through the apparatus when the rotor is rotated,
- the rotor and stator surfaces facing each other having outermost surfaces with a wavelike cross-section, and
- the rotor and stator grooves being so arranged that at the ridge of a wave, the groove reaches its maximum depth, and
- at the bottom of a wave, the groove reaches its minimum depth, and
- the bottom of a rotor wave is at the ridge of a stator wave and vice versa,
- wherein the rotation of the rotor causes the grooves to interact so that material is moved alternately from a first rotor groove to a first stator groove, and from the first stator groove to a subsequent rotor groove and from the subsequent rotor groove to a subsequent stator groove.
An apparatus as claimed in 12, wherein the cross-section of the grooves is flat in the longitudinal direction.
Dependencies are inferred from the claim text.