| 摘要 |
PURPOSE:To simply remove out excavated soil, etc., remaining in the pipe of vertical culvert by the suction force of the jet stream of high-pressure water directed through the annular chamber and port of the straight tube toward the inside outlet side of the drain tube. CONSTITUTION:An annular chamber 7 is formed around a straight tube 5, and a pressure water hose-connected tube 6 is connected to the annular chamber 7. A large number of holes 8 leading slantly from the chamber 7 to the inside of a drain port 2 are provided around the opening on the connected side of the drain tube 2 of the straight tube 5. A cleaning hose 1 is inserted deeply into the pipe 9 of the vertical culvert. When high-pressure water is supplied to the pressure water hose 3, the high-pressure water is jetted toward the outlet side into the drain tube 2 through the annular chamber 7 and the holes 8, water in the pipe 9 is sucked up, together with excavated soil, etc., by the suction force of the jet stream and discharged through the straight tube 5 from the drain tube 2 to the surface of the ground. |
