Patent ID: 6260716
Filing Date: 2001-07-17
Classification: B01D

Abstract:
A scum sweeper for sweeping surface floating matters in a clarifying tank to a collector channel, comprising:a supporting frame having mounting brackets for installation of the supporting frame in the clarifying tank at an above position with respect to the collector channel;a pair of endless chains attached to the supporting frame in parallel with and spaced from each other, the chains extending substantially crosswise to the collector channel and defining lower and upper opposite running courses between opposite turning end courses when the supporting frame is installed in the clarifying tank;a motor unit attached to the supporting frame and operatively coupled to the chains in a driving engagement therewith;an elongated sweeping blade;a pair of arms hanging the blade under the chains with the blade extending substantially crosswise to the chains, the arms having lower ends attached to the blade, and upper ends pivotally attached respectively to the chains at substantially similar positions therealong, the arms having a length exceeding a space between the lower and upper running courses; anda guiding means for locking the arms in a downward direction with respect to the chains when the arms travel along the lower running course thereof,whereby the blade always remains under the chains as a result of a free pivoting of the arms at the opposite turning end courses.