Liquid purification or separation – Gravitational separator – Material supply distributor
Patent
1977-06-20
1979-03-06
Wolk, Morris O.
Liquid purification or separation
Gravitational separator
Material supply distributor
210525, 210530, B01D 2124
Patent
active
041429770
ABSTRACT:
A circular decanter includes a stationary hollow column rotatably supporting a bridge which spans the decanter. A trough is integral with the bridge and rotates therewith, whereby sludge drawn by vacuum from the bottom of the decanter is collected in the trough. A sludge evacuation duct is positioned centrally within the hollow column. That portion of the trough which is closest to the column is formed as a siphon having an upstream branch extending downwardly into the sludge collection chamber of the trough and a downstream branch extending downwardly into the sludge evacuation duct. An electric motor for rotating the bridge, trough and siphon is positioned above the column and includes rotating elements attached to the siphon and non-rotating elements. The power supply cables for the electric motor are led upwardly through the column, the sludge evacuation duct and the downstream branch of the siphon and are enclosed within a stationary casing and tube. The upper end of the tube is attached to the stationary elements of the electric motor. A seal in the form of a tubular member is attached to the siphon and surrounds the tube so that the tube is isolated from sludge passing through the downstream branch of the siphon and the sludge evacuation duct.
REFERENCES:
patent: 2223257 (1940-11-01), Mallory
patent: 2427091 (1947-09-01), Durdin
patent: 3348696 (1967-10-01), Parks et al.
patent: 3494462 (1970-02-01), Baud
patent: 3951819 (1976-04-01), Shaffer et al.
Durot Jean
Le Fur Jean
Degremont
Turk Arnold
Wolk Morris O.
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