WATER SEALING DEVICE OF WATER STORAGE TYPE SEWAGE TANK FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To solve the subject that it is required to have a device for supplying water and preventing freeze or the like by utilizing water for a water sealing device of water storage type sewage tank for a vehicle. SOLUTION: The water sealing device of water storage type sewage tank for a vehicle has a hollow casing 10 filled up with gas, an inflow pipe 11 allowing gas and overflow discharge water in a sewage tank 2 to flow into the casing 10 from the sewage tank 2 and an outflow pipe 12 allowing gas and overflow discharge water in the sewage tank 2 to flow out to the sewage tank 2 from the casing 10, and a downstream end 11a of the inflow pipe 11 is positioned in the casing 10 and a lid body 13 capable of opening/closing an opening part is arranged at the opening part of the downstream end 11a of the inflow pipe 11. The lid body 13 hermetically closes the opening part of the downstream end 11a of the inflow pipe 11 by the pressure in high pressure condition of the outside of sewage tank 10, and the lid body 13 opens the opening part of the downstream end 11a of the inflow pipe 11 by the pressure in high pressure condition of the inside of sewage tank 10. COPYRIGHT: (C)2009,JPO&INPIT