| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe inner cleaning member easily recoverable from the inside of a cleaning object pipe.SOLUTION: A body part 30 comprises a freely expandable and contractible inner member 38 and an outer member 39 for covering the outer periphery of the inner member 38 and cleaning a pipe inner surface by contacting with an inner surface of a cleaning object pipe, and a first recovery wire rod 31 is connected to the outer member 39 for recovering through an introduction part from the inside of the cleaning object pipe by pulling the body part 30 to the upstream side, and self-discharge means 33 is provided for discharging liquid in the inner member 38 from a hole, by boring the hole in the inner member by using force of a pipe inner fluid acting on the body part 30, when the body part 30 stops in the cleaning object pipe since the first recovery wire rod 31 is caught in the cleaning object pipe. |
