Drum type paper stock fine screen

Details Drum type paper stock fine screen Drum type paper stock fine screen

2006-05-16

2006-05-16

Prince, Fred G. (Department: 1724)

Liquid purification or separation

Filter

Movable medium

C210S394000, C210S403000, C210S784000, C210S791000, C162S060000, C162S276000

Reexamination Certificate

active

07044307

ABSTRACT:
A drum type paper stock refine screen is provided which is capable of efficiently filtering a refined paper stock to the outside of a laterally suspended rotary drum and efficiently discharging foreign matter to the outside of the drum while rotating the drum. The drum type paper stock refine screen includes a lower water infiltration zone formed by infiltrating a lower circular part on one end side of a laterally suspended rotary drum in a water tank, a non-water infiltration zone continuous with the lower water infiltration zone on the other end side of the rotary drum, and a paper stock injection port for injecting a paper stock in the lower water infiltration zone. A refined paper stock of the injected paper stock is passed into the water tank through air and water passage apertures formed in a wall which forms the rotary drum, and in the lower water infiltration zone, foreign matter, which has not passed through the air and water passage apertures in the lower water infiltration zone, is discharged into the non-water infiltration zone.

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