Evertable drum centrifuge filter

Details Evertable drum centrifuge filter Evertable drum centrifuge filter

1996-07-11

1997-05-20

Lithgow, Thomas M.

Liquid purification or separation

Filter

With movable means to compress medium

210370, 2103803, 210405, 210456, 494 25, 494 36, 494 38, 494 41, B04B 302, B04B 1100, B01D 3311

Patent

active

056309384

ABSTRACT:
An evertable drum centrifuge has a housing extending along an axis, a hollow filter drum rotatable in the housing about the axis and having a front end wall formed with a fill opening centered on the axis, and a nonrotatable fill tube extending along the axis and having a back end. A fill head complementarily engageable in the fill opening is fitted in a closed position in the fill opening and a suspension to be filtered is introduced through the fill tube and fill opening into the drum. A bearing rotatably supports the fill head on the fill-tube back end and a static seal is engaged between the fill head and the fill opening. A pair of dynamic seals flank the bearing, define with the head and fill tube an annular compartment surrounding the fill tube, and each have a head ring fixed rotationally on the head and having a face, a fill-tube ring fixed rotationally on the fill tube and having a face axially engaging the face of the respective head ring, and a spring urging the faces of the respective fill-tube ring and head ring axially together. The compartment is pressurized with a fluid that is forced from the compartment between the faces of the dynamic seals.

REFERENCES:
patent: 2360455 (1944-10-01), Vilter
patent: 3438500 (1969-04-01), Pico
patent: 5169525 (1992-12-01), Gerteis
patent: 5304306 (1994-04-01), Gerteis
patent: 5472602 (1995-12-01), Feller

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