| 摘要 |
PROBLEM TO BE SOLVED: To provide a water sealing device which can secure a certain amount of water in a water seal tank for keeping water seal of drain piping all the time and can assuredly keep water-seal. SOLUTION: In a water sealing device where moisture contained in a gas flowing through piping is drained into a tank via drain piping and the inside of the piping is shut off by the water pooled in the tank from atmosphere, a device in which a water seal tank 4 for water sealing by having an opening end 3a of the drain piping 3 sink in the water and a drain tank 6 for pooling water overflowed from the water seal tank 4 are provided, and a circulating means 9 is provided for returning the water pooled in the drain tank 6 to the water seal tank 4.
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