WATER-SOLUBLE COOLANT CLEANING DEVICE

PROBLEM TO BE SOLVED: To provide a water-soluble coolant cleaning device which retrieve positive ions, metal particles, and foreign substance particles in a water-soluble coolant by deposition and absorption to maintain the capability of the water-soluble coolant for a long period, allows an electrode plate to be used for a long period, and performs stable deposition retrieval and absorption retrieval. SOLUTION: A supply means 10 supplies the water-soluble coolant 5 containing positive ions and metal particles to an electrolytic bath 120, where the water-soluble coolant 5 flows along cathode plates 31 and 32 and an anode plate 41, and then a direct current is supplied to the cathode plates 31 and 32 and the anode plate 41. This causes an electrolysis action, by which positive ions and metal particles are deposited on or absorbed to the cathode plates 31 and 32. When the electrolysis action is over, the water-soluble coolant 5 is discharged from the electrolytic bath 120. Subsequently, the direction of the current is reversed to peel or separate substances deposited on and absorbed to the cathode plates 31 and 32 and anode plate 41. The current is then cut off so that a retrieving means 100 precipitates the substances peeled or separated in an electrolytic unit 121 into a precipitation unit 122. COPYRIGHT: (C)2009,JPO&INPIT