COOLANT TANK DEVICE FOR GRINDING SPECTACLE LENS, SPECTACLE LENS GRINDING DEVICE WITH THE TANK DEVICE, AND GRINDING WASTE SEPARATING DEVICE

摘要

PROBLEM TO BE SOLVED: To easily separate grinding waste from coolant in a tank. SOLUTION: This circulation type coolant tank device for storing coolant used for grinding the peripheral edge of a spectacle lens in the tank comprises a filter disposed in the tank to separate the coolant from the grinding waste for filtration and having a sealed hollow part formed therein and a coolant sucking means having a pump to suck the coolant filtrated by the filter through the hollow part.