Screw press for squeezing out fibrous material

Details Screw press for squeezing out fibrous material Screw press for squeezing out fibrous material

2003-09-12

2008-12-09

Nguyen, Jimmy T (Department: 3725)

Presses

With drain means for expressed liquid

Drainage through or along pressure surface

C100S131000, C100S146000

Reexamination Certificate

active

07461591

ABSTRACT:
A screw press for pressing fibrous material, in particular sugar beet pulp, having a pair of adjacent counter-rotating shafts parallel axes, the shafts each having a helical structure winding in the opposite direction to the helical structure of the other shaft, a perforated filtering cage enclosing said helical structures, a loading hopper for feeding the fibrous material to the press, a discharge aperture for the exit of the pressed material, the helical structures having a helix (22, 32) and a helical element (23, 33), which has at least one perforated surface and a helical interspace with the outer surface of the shaft, the perforated surface having a length (L) along the axis of the shaft which is less than the pitch (P) of the helix so as to receive the helix of the adjacent shaft.

REFERENCES:
patent: 3461793 (1969-08-01), Solberg
patent: 4565124 (1986-01-01), Stautland et al.
patent: 5743178 (1998-04-01), Babbini
patent: 0 773 100 (1997-05-01), None
patent: 0 930 152 (1999-07-01), None
patent: 677 794 (1952-08-01), None
patent: WO 03 031166 (2003-04-01), None

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