Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Patent
1996-12-02
1999-01-12
Drodge, Joseph W.
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
100116, 100127, B01D 3306
Patent
active
058582355
ABSTRACT:
A sludge dehydrating press includes an outer screen case in which sludge to be treated is filled, the outer screen case having a screen surface in at least a part thereof, press means for pressing sludge filled in the outer screen case, one or more inner screen cases disposed slidably in the outer screen case including a screen surface extending in a directon crossing the direction of pressing by the press means and having continuous slits and the inner screen cases having also a space into which water extracted from the sludge flows, and positioning means for positioning the inner screen cases to a predetermined position after completion of pressing by the press means. The screen surface of the outer screen case preferably is made of a wedge wire screen having a flat inside surface. The press may further include an extracted water removing screen tube coaxially with the outer screen case.
REFERENCES:
patent: 838841 (1906-12-01), Carlson
patent: 1566496 (1925-12-01), Maus
patent: 2770426 (1956-11-01), Sievers
patent: 4714549 (1987-12-01), Di Leo
patent: 5643458 (1997-07-01), Nagaoka
Drodge Joseph W.
Nagaoka International Corp.
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