Patent ID: 7153419
Filing Date: 2006-12-26
Classification: B01D

Abstract:
1. A liquid treating device comprising: a liquid tank for temporarily storing liquid containing sludge discharged from a machine tool; a pump adapted to pump up said liquid containing sludge; a cyclone separator adapted to swirl the liquid discharged from the pump to subject the sludge to centrifugal separation from the liquid and precipitate the sludge; a sludge pot adapted to condense the sludge precipitated by the cyclone separator and discharge the precipitated sludge from a discharge port arranged in a lower part of the cyclone separator; an opening/closing valve for sludge discharge arranged at the discharge port of the sludge pot; a sludge discharge device having a sludge storage tank part adapted to store the sludge and liquid discharged from the sludge pot via the opening/closing valve temporarily, and a sludge discharge conveyor adapted to discharge only the sludge to the exterior from the sludge storage tank part; and a supernatant liquid recovering part adapted to recover a supernatant liquid stored in the sludge storage tank part of the sludge discharge device in the suction side of the pump.