| 摘要 |
PURPOSE:To provide a pipe interior cleaning device capable of cleaning easily the inner wall of even a pipe of a large inside diameter and further without restriction of the inside diameters, and of inserting easily from a manhole into the pipe and being conveniently carried. CONSTITUTION:The pipe interior cleaning device is made of rubber or a flexible plastic and slidably movable along the inner wall of a pipe to remove extraneous matter therefrom. This pipe cleaning device has a hollow cylindrical body 2 closed at one end and provided with ring-like tubular members 3 formed on its outer peripheral surface integrally therewith and adapted to expand and contract while the cleaning device is moving slidably along the inner wall of the pipe. The tubular member 3 is provided with an expandable and contractible tubular layer 3a and a reinforcing layer 3b and pressure air is sent thereinto from an air supply opening 3c. |
