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US 12,509,824 B2Granted
Pulp screening machine
AssigneeANDRITZ (China) Ltd.
InventorAlexander Gscheider
Life of this patent
Estimating the term…
Abstract
A pulp screening machine has screen extending upward from the bottom of the pulp screening machine and a rotor which rotates around the outside of the screen. An accept outlet is provided inside the screen and a pulp outlet and reject outlet are provided outside of the screen. The rotor vanes of the rotor are cantilevered from the rotor base on top of the screen into the region of the screen, with the rotor vanes not being connected to each other in the region of the screen. The rotor vanes have a rigidity adaptable for de-flaking cooperatively with the outside surface of the screen.
Claims16
A pulp screening machine, comprising:
- a screen (200) extending upwards from a bottom and defining an inside and an outside,
- a rotor (100) rotatable about the outside of the screen (220) and including rotor vanes (101) cantilevered from a base (102) thereof from a top of and into the inside of the screen (200),
- an accept outlet provided on the inside of the screen (200),
- a pulp inlet and a reject outlet provided on the outside the screen (200), wherein
- the screen (200) is conical, tapering inward as extending upwards,
- the rotor vanes (101) are not connected to each other on the inside of the screen (200),
- the rotor vanes have a rigidity adaptable for de-flaking the pulp cooperatively with the screen, and
- a screen angle α between the screen (200) and a horizontal plane is greater than or equal to 45° and less than 90°.
5 more elements
Dependencies are inferred from the claim text.