Classifying – separating – and assorting solids – Sifting – Drum sifters
Patent
1987-11-12
1989-07-25
Kashnikow, Andres
Classifying, separating, and assorting solids
Sifting
Drum sifters
209488, B07D 124
Patent
active
048511110
ABSTRACT:
In screening apparatus for paper fiber stock of the type wherein a cylindrical perforate screen member defines screening and accepts chambers on the inner and outer sides thereof in a closed, pressurized housing, the inlet chamber for stock to be screened is located below the screening chamber to facilitate elimination of high specific gravity reject materials before the stock reaches the screening chamber. Special provision is made for accelerating the flow of plastic and other reject materials of lower specific gravity than wet paper fibers to a reject chamber above the screening chamber, and special provision is also made for preventing recirculation of such reject materials to the lower end of the screening chamber and thereby concentrating them in the reject chamber from which they are removed by way of a dewatering device that delivers essentially dry reject material for ready disposal while preventing the escape of pressure from the housing. The effectiveness and efficiency of the apparatus is further promoted by special provision for washing fiber away from reject materials in the upper portion of the screening chamber and thereby increasing the overall yield of recovered fiber.
REFERENCES:
patent: 3243041 (1966-03-01), Cowan
patent: 3508651 (1970-04-01), Hooper
patent: 4165283 (1979-08-01), Weber et al.
Martin Andrew C.
Sauzedde Christian
Kashnikow Andres
The Black Clawson Company
Weldon Kevin P.
LandOfFree
Apparatus for screening paper fiber stock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for screening paper fiber stock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for screening paper fiber stock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2356246