CHEMICAL CLEANING METHOD IN WATER DISTRIBUTION PIPES

摘要

PURPOSE: A chemistry rinse method of a drainpipe is provided to remove the residual scales and incrustation and to prevent rust stain of tap water. CONSTITUTION: Blocking cocks(21,22) are installed in a drainpipe(1). Saddles(3,4) are mounted on back and forth of the blocking cocks. A float(51) hanged on a pulling string(5) is inserted into one side of the saddle. A first traction line sends the float to an outlet saddle with water. A second traction line is connected to the first traction line when the first traction line reaches the outlet saddle. An absorbing tube is pulled with the second traction line to reach the outlet saddle and pulled to an inlet saddle by discharging the residual water. The residual is drained out by a weight of the end part of the absorbing tube. The detergent is sprinkled into the drainpipe inner wall.