The present invention relates to a piping cleaning device for cleaning the inside of the piping installed in building, residence, fountain, structure, etc., in a piping system for transferring liquids such as clean water, cooling water, solution, chemical solution, water liquid, liquid raw material, etc., which can, by connecting a liquid storing tank, in which is stored a prescribed volume of cleaning solution, to one end side of the piping, connecting to the other end side a sealed tank for storing the cleaning solution discharged from that side and providing a liquid feed means for feeding a flow of cleaning solution between the two tanks through the inside of the piping, clean the piping by alternately repeating the action of feeding and flowing the cleaning solution to the liquid storing tank and the sealed tank through the inside of the piping to make the cleaning solution pass to the entire areas of the piping up to the small pipes at the terminals, accurately clean and eliminate obstinate dirt adhering to the inside of the piping by applying the pressure and impact of the cleaning solution from different directions against the dirt adhering to the inside of the piping, promote improvement of working efficiency by making it possible to perform the cleaning work in a short time and efficiently and yet reduce the amount of cleaning solution to be supplied and thus reduce the amount of loss by feeding and recovering the cleaning solution from one end side of the piping, and is economical and capable of not only reducing the cleaning cost but also facilitating the installation work.
A pipeline-cleaning method and device thereof is built and applied by firstly forming a sealing circuit including a pipeline pending cleaning, a pressure control device, and two units of pipeline-cleaning device A, A'. A storage tank filled with rigid granules in each pipeline-cleaning device A, A' is provided with a filter net unit at its lower portion and a filter unit at its upper portion. When cleaning, a pressurized liquid is supplied by the pressure control device to drive the granules circulating the circuit and thereby remove dirt and sediment deposited on the pipe wall by collision and rubbing of the granules to the pipeline inner wall.
