| 摘要 |
PURPOSE:To permit the washing of the inside of a boiler to every corners by changing rapid stream alternately in a pump, the boiler and a bathtub by a method wherein a hose of a pump is connected closely to the suction port of the boiler and the pump is operated up-and-down strongly by hand. CONSTITUTION:A pump 2 is dipped into a bathtub 1. The hose 4 of the pump 2 is connected to the suction port 7 of a boiler 3. When a handle 6 is lifted strongly, water in the boiler 3 flows through the suction port 7 and the water in the bathtub 1 flows into the boiler 3 through the discharging port 8 of the boiler. When the handle 6 is lowered strongly, the water in the pump 2 flows into the boiler 3 and the water in the boiler 3 flows into the bathtub 1. When the handle 6 is operated up-and-down continuously, the rims 9 of a suction and discharge board 5 is spread by the resistance of the wafer and sucking and discharging effect may be increased. Rapid stream with a pressure spreads to every corner in the boiler 3 and pushes out the sludge of water, the dirt of human body, hairs of human and the like into the bathtub 1.
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