| 摘要 |
In equipment for collecting metal powder mixed in with treatment liquid by using magnetic filters 3 which are positioned within a circular passage 1 for a cleaning liquid, for the purpose of avoiding the drawback in which the meal powder accumulated on the magnetic filter peels out as a mass when exceeding a limit, a detection portion 4 of an ultrasonic sensor 15 is provided for detecting the amount of metal powder attached or adhering onto metal powder collecting cylinders 12. Further, electro-magnetic valves V1 through V5 of the circular passage 1, a cleaning circuit 5, and a discharging circuit 6 are controlled by a detection signal of a detection portion, in opening or closing thereof, thereby cleaning the metal powder attached or adhered onto the magnetic filter 3.
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