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US 11,458,483 B2Granted
Solid-bowl centrifuge screw
AssigneeFlottweg SE
InventorsMatthias Scheidhammer, Manfred Meyer
Life of this patent
Estimating the term…
Abstract
A solid-bowl centrifuge screw is provided and has a screw flight with a profiled flight cross-sectional area. The screw flight has plural layers applied sequentially by build-up welding.
Claims11
A solid-bowl centrifuge screw (10) comprising:
- a screw hub (20) extending along an axial direction (14) of the screw (10);
- and a screw flight (22) extending out from the screw hub (20), the screw flight (22) not being a wound sheet metal and having a profiled flight cross-sectional surface (52) with at least one portion of the screw flight (22) defining a curve relative to a radial direction of the screw (10) and with the screw flight (22) having a first thickness at a first radial position thereon relative to the radial direction and a second thickness at a second radial position thereon relative to the radial direction, with the first thickness being different than the second thickness.
A method for producing a solid-bowl centrifuge screw (10) comprising:
- providing a screw hub (20);
- and forming a screw flight (22) of the solid-bowl centrifuge screw (10) on the screw hub (20), the screw flight (22) being formed by shaping build-up welding that is carried out so that the screw flight (22) has a profiled flight cross-sectional surface (52).
Dependencies are inferred from the claim text.