| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid delivery system capable of delivering liquid to another tank in an airtight state without bringing a pressure in a tank to a negative pressure.SOLUTION: A liquid delivery system delivers liquid L in a first tank 1, into which liquid L is filled, to a second tank 2 by a suction pipe 3, a liquid delivery hose 5 and a pump 4. The suction pipe 3 is provided so as to penetrate a lid member 7 which is installed to an upper end mouth part of the first tank 1 in an airtight state, a sheath pipe 8, which penetrates the lid member 7 via an airtight packing 11 and whose lower end part is communicated to a gap phase 10 in the first tank 1 and upper end part is closed, is concentrically fitted onto an upper end side of the suction pipe 3, the upper end part of the suction pipe 3 is connected to the liquid delivery hose 5, an upper side of the sheath pipe 8 protruded above the lid member 7 is connected to a ventilation hose 9, whose tip part leads to outside air, in a communicated manner. |
