| 摘要 |
PROBLEM TO BE SOLVED: To provide a coolant filtration device with a relatively compact structure, hardly causing filter clogging, and having a sufficient throughput and excellent processing efficiency. SOLUTION: A plurality of drum filters 10 and 11 are provided in a filtration bath 1, wherein the plurality of drum filters 10 and 11 have respectively different diameters, and as coming closer to a coolant inlet 2, a filter with a smaller diameter is provided. As coming closer to the coolant inlet 2, a distance between the drum filters 10 and 11 and the bottom of the reservoir 1 gets larger. COPYRIGHT: (C)2009,JPO&INPIT
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