| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid feeding device which can easily recover a vapor at the time of unloading from a tank lorry to an oil storage tank in the hatch of the tank lorry without requiring a special labor. SOLUTION: An unloading hose 50 has a first connecting section 41 on one end and a second connection section 60 on the other end. In this case, the first connecting section 41 is connected with the discharging port 32 of the tank lorry 30. The second connecting section 60 is connected with the oil feeding port 13 of an oil feeding pipe 12 which is provided on the oil storage tank 11 buried under the ground in a filling station. Through the unloading hose 50, an oil in the hatch 31 of the tank lorry 30 is unloaded into the oil storage tank 11 by this liquid feeding device. In such a liquid feeding device, a vapor tube is provided on the unloading hose 50. The vapor tube is connected with a vapor returning pipe 36, which communicates with the inside of the hatch 31 of the tank lorry 30, by the first connecting section 41, and is connected with a vapor discharging pipe, which communicates with the upper space of the oil storage tank 11, by the second connecting section 60. |
