| 摘要 |
PURPOSE:To convey earth smoothly by joining a supplementarily introduced air flow with the other flow of air in parallel in the direction where the flow of air from an opening of the front end of a suction hose is directed. CONSTITUTION:When a suction machine is connected to the rear end of a suction hose (a) to suck, air is absorbed from an opening 7 of the front end thereof, and there is the flow of air in the direction of the arrow X in the hose (a). When a valve 10 is opened, air is sucked from an air inlet 9, there is the flow of air in the direction of the arrow Y to flow in the direction of a large diameter pope 4, and it flows in parallel with the flow X. In addition, in the rear from the end 11 of a small diameter pipe 6, the flow X is smoothly joined with the flow Y, and earth sucked together with the flow X is guided by the flow Y. |
