| 摘要 |
PURPOSE: To enhance the efficiency of transport by providing a plurality of storage sections separated by valves between front and rear sides in a transport pipe, installing supply and exhaust communicating pipes equipped with valves between the storage sections and supply and exhaust pipes, and selectively opening and closing the valves while temporarily storing. CONSTITUTION: A compressor 4 for sending compressed air is connected to the end portion at the portal side of an air supply pipe 2, a silencer 5 is connected to a pressure air pipe 3, and storage sections 8... separated by pairs of front and rear valves 6, 7 in the middle of transport pipe 1 are provided in a plurality of stages at predetermined intervals. Also, supply and exhaust communicating pipes 9..., 10... are connected between the supply and exhaust pipes 2, 3 and valves 11, 12 are respectively installed in the middle of them. And separation filters 13... between excavation muck and air are installed at inlet side of the exhaust communicating pipes 10..., and each of valves 6, 7, 11, 12 is selectively opened and closed and the muck is transported intermittently and sequentially by pressured air from the compressor 4. In this way, the muck can be transported over a long distance. |
