CLEANING METHOD FOR PIPELINE

摘要

PURPOSE:To make a cross laying pipe at each floor washable in leaving a wet scrubber set up in the specified floor intact by feeding compressed air and head water pressure into the cross laying pipe by way of a vertical main pipe in a state of having one end of the cross laying pipe released. CONSTITUTION:In a building, there are provided with a vertical main pipe 2 set up over each floor and a cross laying pipe 3 connected to this main pipe and set up at each floor. When the cross laying pipe 3 at an upper floor 8 is washed, compressed air 9 driven intermittently from a compressed air driver 1 set up in a lowermost floor 7 goes up in the vertical main pipe 2 where water is filled up and flows into the cross laying pipe 3 at the upper floor 8 in the state that a terminal faucet 5 additionally installed in the pipe 3 is opened. In succession, head water pressure 10 imposed on the inside of the cross laying pipe 3 flows into the cross laying pipe 3. With this constitution, the cross laying pipe at the upper floor is easily washable in leaving a web scrubber set up in the lowermost floor intact.