| 摘要 |
A screw press ( 1 ) for pressing fibrous material, in particular sugar beet pulp, comprising: at least one pair of helical elements ( 30 ) which are disposed mutually parallel and side by side and comprise at least one helix ( 32, 33 ) disposed about a rotary shaft which extends along a predetermined axial direction; a perforated walled filtering cage ( 5 ) supported by equidistant hoops ( 13, 14 ) and enclosing the helical elements ( 30 ) as an exact fit; a loading hopper ( 8 ); a discharge opening ( 9 ) for the exit of the pressed material; a collection sump ( 10 ) positioned externally to the filtering cage ( 4 ); in which the filtering cage ( 5 ) presents a modular structure having a distance between the axes of each module (M) which is constant and is a sub-multiple of, or equal to, the dimension of the loading hopper ( 8 ) measured along the predetermined axial direction, the loading hopper ( 8 ) being shiftable by its replacing one or more modules (M) of the filtering cage ( 5 ).
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