| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus which is interposed on negative pressure piping and which discharges the air and foreign matter such as water by separating them from each other. <P>SOLUTION: In this apparatus, the inside of a tank 10 is brought into a negative pressure state by suction performed by a suction machine 20; an outlet 13 is closed by a closing motion of a flap valve 14; air is sucked in together with foreign matter such as water through a suction inlet 11, and discharged from the suction machine 20 via the tank 10; the foreign matter such as the water is temporarily stored inside the tank 10; after the inside of the tank 10 is filled with the foreign matter such as the water, the water is sucked into a suction extension portion 15 until a water level inside the tank 10 is proportionate to the maximum static pressure of the suction machine 20; and consequently, negative pressure inside the tank 10 is eliminated so that the outlet 13 can be opened for the discharge of the foreign matter such as the water. <P>COPYRIGHT: (C)2013,JPO&INPIT |
