Liquid purification or separation – Filter – With residue removing means or agitation of liquid
Patent
1996-01-30
1998-03-17
Lithgow, Thomas M.
Liquid purification or separation
Filter
With residue removing means or agitation of liquid
210408, 210411, 210415, 2104973, B01D 2968, B01D 3502
Patent
active
057282978
ABSTRACT:
An apparatus for the mechanical cleaning of liquids, especially cooling water delivered from a heat exchanger and flowing in a pipeline (10), with a rotationally symmetrical, conical sieve (12) of substantially the size of the pipe diameter, as well as a coaxial suction device (20) which is disposed on the upstream side of the sieve, is mounted for rotation continuously or with interruptions for the duration of a cleaning interval, and during the cleaning interval sucks bit by bit the entire surface of the sieve (12) on the upstream side, the sieve (12) being divided into areas, the intake nozzle (22) of the suction device (20) can cover each area, and in each area of the actual sieve surface and of the suction device there is a cavity for the temporary accommodation of contaminants, the sieve (12) being divided on its upstream side by substantially radial barriers (36) into individual sectors forming the areas, the intake nozzle (22) of the suction device (20) has such a shape that, at the moment in which the intake nozzle just covers one sector, and leaves adjacent sectors substantially free, the gap between the free barrier edges and the edges of the intake nozzle (22) of the suction device (20) is spanned by flexible sealing lips (44) of at least the height of the gap. Preferably the apex (61) of the cone has no barriers (36) and the ends of the barriers (36) disposed in the remaining area have no terminations, so that funnel-shaped chutes (63) result which are open on the upstream and downstream ends, so that hard contaminants, such as stones, mussels, will slide along the sieve surface (64) into the barrier-free cone apex (61) and are there sucked away from the opening (62) present in the coupling tube (24).
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patent: 4582603 (1986-04-01), Nasse
patent: 4849105 (1989-07-01), Borchert
patent: 4867879 (1989-09-01), Muller
patent: 4904397 (1990-02-01), Eimer
patent: 5275728 (1994-01-01), Koller
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