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US 6,631,809 B2Granted
Screen for cleaning a pulp suspension
AssigneeAndritz Inc.
InventorsHelmuth Gabl, Axel Pichler, Alexander Gscheider
Life of this patent
Estimating the term…
Abstract
A screen for cleaning a pulp suspension includes a stationary installation in the infeed area between the infeed branch and the free end of the rotor.
Claims18
Screen for cleaning a pulp suspension comprising:
- an infeed branch having an axis;
- a rotatable rotor having a driven end and a free end;
- and
- a stationary installation disposed within an infeed area between the infeed branch and the free end of the rotor, the installation having a surface;
- wherein the axis of the infeed branch is substantially parallel to the surface of the installation.
2 more elements
Screen for cleaning a pulp suspension comprising:
- an infeed branch;
- a rotatable rotor having a driven end and a free end;
- a stationary, spiral-shaped installation disposed within an infeed area between the infeed branch and the free end of the rotor;
- and
- a screen basket disposed intermediate the installation and the rotor;
- wherein the spiral-shape has a pitch selected such that the flow speed in the infeed area is kept constant over the entire screen basket.
3 more elements
Screen for cleaning a pulp suspension comprising:
- an infeed branch defining an inlet diameter;
- a rotatable rotor having a driven end and a free end;
- a stationary installation disposed within an infeed area between the infeed branch and the free end of the rotor, the installation having a surface and defining a height;
- and
- a screen disposed intermediate the installation and the rotor;
- wherein the infeed branch is adapted for directing the pulp suspension over substantially the full height of the surface of the installation and the installation is adapted for redirecting the pulp suspension evenly onto the screen.
3 more elements
Dependencies are inferred from the claim text.