The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 1979
Filed:
Jun. 20, 1977
Jean Le Fur, Hauts de Seine, FR;
Jean Durot, Yvelines, FR;
Degremont, Rueil-Malmaison, FR;
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.