A LIQUID SEALING DUCT UTILIZING AIR TUBES

摘要

PURPOSE: A liquid sealing duct using air tubes is provided to reduce materials for reinforcement or supporting members required for installation of the liquid sealing duct by minimizing the weight of the liquid sealing duct. CONSTITUTION: A liquid sealing duct is interposed between a moving duct(200) and fixed equipment, wherein the moving duct is installed in a mobile working machine moving around a predetermined working zone and the fixed equipment including a suction unit for drawing in dust-containing air from a corresponding duct. The liquid sealing duct includes a liquid filling chamber for maintaining continuous connection with the fixed equipment. Air tubes are installed in the longitudinal direction of the liquid filling chamber to reduce the amount of liquid to be filled. A constant pressure maintaining unit is provided to maintain constant pressure in the air tubes.