WATER SEALING MUCK RECOVERY DEVICE

PROBLEM TO BE SOLVED: To provide a water sealing muck recovery device inexpensively manufacturable by a simple constitution, and permanently usable without requiring maintenance in the muck recovery device for recovering sludge-like muck generated when placing concrete for constructing a dam. SOLUTION: This water sealing muck recovery device is provided with a recovery port 6 for connecting a recovery pipe 7 in the tangent direction of an upper peripheral part of a recovery tank 5 having an inverse conical shape in a lower part, and has a suction port 8 arranged in an upper central part of the recovery tank 5 and a discharge port 11 arranged in a lower central part of the inverse conical shape of the recovery tank 5. The inside of the recovery tank 5 is put in a sealed state by sinking the lower end of a discharge pipe 12 connected to the discharge port 11 of the recovery tank 5 in the water of a precipitator 16; the muck is recovered by suction force in the recovery tank 5 by a vacuum pump 10 connected via a suction pipe 9 to the suction port 8 of the recovery tank 5; and the muck in the recovery tank 5 is dropped in the precipitator 15 via the discharge pipe 12 by separating water by the cyclone action. COPYRIGHT: (C)2004,JPO&NCIPI