| 摘要 |
PROBLEM TO BE SOLVED: To enhance the productivity while reducing the cost by efficiently recovering an oil component without being affected by the level fluctuations of a cutting soln. and automatically informing a worker of a period when the recovered oil component reaches a predetermined amt. and requires maintenance. SOLUTION: The filter apparatus removes an oil component such as machine oil or the like contained in a water soluble cutting soln. 9. In this case, the filter apparatus is equipped with a cutting soln. tank 8, a filter tank 1a having an opening part provided to the upper part thereof and packed with a filter material 5 and having a discharge hole 7a, which returns the cutting soln. passed through the filter material to the cutting soln. tank 8 provided to the bottom portion thereof, a water sucking pump 2 sucking up the cutting soln. 9 in the cutting soln. tank 8 to pour the same on the upper surface of the filter material 5, a clogging detector 4 for detecting the height of the surface of the cutting soln. 9 accumulated on the upper surface of the filter material 5, a controller 3 outputting an alarm command requiring the replacement of the filter material when a clogging detecting signal is inputted to stop the water sucking pump 2 and an alarm means 25 requiring the replacement of the filter material.
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