| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for cleaning a drain pipe, which can be applied even to a cleaning hose enabling the passage of a large quantity of water by virtue of a large hose diameter, and which enables dirt to be removed by high pressure water.SOLUTION: Sub-rollers 12 and 13 in upper and lower positions of a main roller 11 having a hose guide groove provided on a roller surface are sent round to the main roller 11 in which covering bodies with a plurality of juxtaposed rollers are each set to be capable of being brought into contact with/separated from a rear-side roller surface. A cleaning hose 2 is sent in/out by drive rotation of the main roller 11. |
