High density pulp screening apparatus

Details High density pulp screening apparatus High density pulp screening apparatus

1985-09-16

1987-04-14

Bashore, S. Leon

Paper making and fiber liberation

Apparatus

With beating, refining, and/or disintegrating means

209359, 210413, 241 4611, 241 4617, D21D 504, B07B 104, B07B 142

Patent

active

046576363

ABSTRACT:
A high density pulp slurry screening apparatus is disclosed which has a cylindrical casing including a first chamber in the center with an intake port for introducing unrefined pulp slurry and a discharge port for discharging foreign matters which have been separated from the pulp slurry and a pair of second chambers disposed on the sides of the first chamber for accepting the pulp slurry. The first chamber and each second chamber are divided by a screen plate with a plurality of screening apertures on the entire surface thereof for passing the refined pulp slurry from the first chamber into the second chamber. In the first chamber are provided a pair of stirring impellers rotating in the opposite directions for stirring and agitating the incoming pulp slurry and causing substantial turbulence to effect a uniform positive pressure distribution along the entire surface area of the screen plate and a smooth and efficient passage of the pulp slurry.

REFERENCES:
patent: 2452135 (1948-10-01), Lowe
patent: 2480119 (1949-08-01), Cram

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