METHOD AND DEVICE FOR REVERSING PIPE LINING MATERIAL AND CONDUIT RESTORING METHOD USING REVERSING DEVICE

摘要

A method and a device for reversing a pipe lining material and a conduit restoring method using the reversing device. In the device, a cylindrical pipe lining material (1) is led into first and second pressure chambers (50) and (55) and fitted to a reversing nozzle (55a) installed at the lower end of the second pressure chamber. The pipe lining material is held by a holding jack (21) in the first pressure chamber, and pulled into the second chamber by the lowering of the first pressure chamber. When the pipe lining material is fed into the pressure chamber by a prescribed length, the second pressure chamber is sealed airtight, and the pipe lining material is reversed and extracted through the reversing nozzle by a fluid pressure acting on the second pressure chamber. Then, the first pressure chamber is raised, and the pipe lining material is orderly reversed by repeating the same operation and extracted from the second pressure chamber.