| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for washing a pipe, capable of preventing ejection of contaminated air to the outside of the pipe, and capable of avoiding adhesion of a residue or stains such as oils and fats on a hose pulled out of piping.SOLUTION: In a pipe washing device 1, a main nozzle N connected to a downstream side end of a hose 5 to which washing liquid is supplied is arranged in piping 15, and high pressure ejection of the washing liquid is carried out while moving the main nozzle, so that the inside of the pipe is washed. A sub nozzle unit 7 is disposed on the upstream side of the main nozzle in the piping so as to eject the washing liquid toward the downstream side, and the hose in the piping is washed by the washing liquid ejected from the sub nozzle unit, and air in the piping is shielded. |
