| 摘要 |
<p>PURPOSE:To enhance the efficiency in repairing by applying firstly a resinous coated film to a supply pipe, then lining the supply pipe with a putty resin, and lining a dust with the resin discharged into the duct by a pig pulling method in repairing the inner surface of the duct and its supply pipe. CONSTITUTION:A resin is firstly blown into each supply pipe 2 branched from a duct 1 by the low positive-pressure air current from a blower 53 with a repairing means to form a coated film. A putty resin C is secondly forced and injected into the supply pipe 2, and the injection is stopped when the resin reaches the inside of the duct 1. Then the putty resin C is thirdly extruded to the duct 1 side by blowing compressed air into the supply pipe 2 to form a thick film of the putty resin C on the primary lining of the pipe 2. Then finally and fourthly, the inside of the duct 1 is repaired by using the added putty resin C and the resin C from the pipe 2, and pulling and moving a pig 6.</p> |
