Liquid purification or separation – Processes – Separating
Patent
1993-12-14
1995-05-09
Drodge, Joseph W.
Liquid purification or separation
Processes
Separating
184 15, 210168, 210248, 2102571, 210261, 210806, B01D 17038
Patent
active
054137160
ABSTRACT:
A system is described for use in an auto maintenance shop which receives oil from the changing of vehicle oil and oil filters, to recycle the oil. The system includes an apparatus (10) that has a tank reservoir (12) for receiving contaminated oil. The apparatus also includes equipment mounted on the housing, comprising a centrifuge (24), a pump device (26), a valve (34), and a porous filter device (40). In a first mode of operation, the pump draws oil from the reservoir to flow through an input tube (36) into the centrifuge, and then to an output tube (38) to flow back to the reservoir. The centrifuge is operated long enough so the amount of oil flowing through it is at least ten times the amount of oil in the reservoir. The valve is then switched to a second mode wherein fluid from the input tube is directed through the pump to the porous filter device, for final cleaning of the oil before returning it to the reservoir.
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