Classifying – separating – and assorting solids – Sifting – Drum sifters
Patent
1996-08-23
1998-09-01
Valenza, Joseph E.
Classifying, separating, and assorting solids
Sifting
Drum sifters
209305, 209300, 209273, 209393, 162251, 162 55, B07B 120
Patent
active
057997985
ABSTRACT:
A screen cylinder is adapted to be used with a stirring unit for screening high consistency pulp to be received in the screen cylinder. The screen cylinder includes a plurality of parallel supporting plates, each of which is formed with a plurality of transversely and spacedly arranged mounting grooves. The mounting grooves on one of the supporting plates is aligned with the mounting grooves on an adjacent one of the supporting plates. Each of a plurality of parallel elongated bars has a longitudinal constricted mounting portion to be tightly gripped by the supporting plates in the mounting grooves. Each elongated bar further has a longitudinal head portion on one end of the constricted mounting portion and a pair of longitudinal ribs which extend respectively from opposite sides of the head portion adjacent to the constricted mounting portion. The head portion has a flat end face and an opposite pair of concave side faces which extend inwardly from the end face to a respective one of the longitudinal ribs.
REFERENCES:
patent: 5090721 (1992-02-01), Lange
patent: 5094360 (1992-03-01), Lange
patent: 5200072 (1993-04-01), Frejborg et al.
patent: 5394600 (1995-03-01), Chen
Deuble Mark
Valenza Joseph E.
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