B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/132
B01D 21/18 (2006.01) B01D 21/06 (2006.01)
Patent
CA 1083977
ABSTRACT OF THE DISCLOSURE: In a continuously operating square settling tank, the provision of scum skimming devices wherein a pivotally mounted corner exploring skimmer member is swingable in a pre- determined horizontal plane, while kept in contact with the peripheral scum baffle during rotation of the supporting rake structure. This skimmer member forms with the scum baffle a scum collecting pocket whereby when the thus collected scum is pushed up along the slope of a ramp, it is trapped and thereby contained on the ramp for delivery into a receiving box connected to the ramp. The scum collecting effectiveness of the skimmer member may be enhanced by the additional provision of a directional skimmer blade cooperatively so related to the swingable skimmer member, that floating scum material is thereby guided into said collecting pocket.
281045
Dorr-Oliver Incorporated
Fetherstonhaugh & Co.
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