| 摘要 |
PURPOSE: A device for preventing the blockage of a spray nozzle in a water supply pipe is provided to prevent the interruption of the flow of liquid due to the brush residue and contaminants inside the spray nozzle. CONSTITUTION: A device for preventing the blockage of a spray nozzle in a water supply pipe comprises an air supply pipe(35), an alkaline solution supply pipe(40), an air supply pipe(24), and a ball(21). The air supply pipe is connected to one side of the water supply pipe and provides air to the water supply pipe. The alkali solution supply pipe is connected to the other side of the water supply pipe and provides an alkaline solution to the water supply pipe. The air supply pipe has holes(28) on the exterior and is formed lengthwise inside the water supply pipe and connected to an air feeder. The ball in which projections are formed is placed inside the water supply pipe.
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