| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a recycling method of used oil, and to manufacture a compact device therefor at low cost. <P>SOLUTION: Used oil supplied from a collection means 39 and non-used fresh oil are mixed by a main mixing means 51, and the mixed oil is filtered by a main filtering means 57. The mixed oil immediately before the filtration is the used oil diluted with the fresh oil, and the ratio of impurities to the oil is reduced. As a result, the viscosity of the mixed oil is reduced, clogging of the main filtering means 57 with impurities is delayed, and the differential pressure lifetime of the main filtering means 57 can be easily prolonged without increasing the filtering area of the main filtering means 57. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
