| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid feeding method and a liquid feeding device that can suppress an air bubble from being formed when feeding a liquid.SOLUTION: A liquid feeding device comprises: a preparation tank 2, a storage tank 3, first piping 11 extended to rise toward a downstream side of a flow passage, second piping 12 extended in a horizontal direction, third piping 13 extended to fall toward the downstream side of the flow passage, fourth piping 14, a valve 21, and a filling machine 4. The first piping is filled with a liquid until the liquid level in the first piping reaches the liquid level in the preparation tank by opening the valve without pressurizing the inside of the preparation, and the first piping is filled with the liquid by continuously pressuring the inside of the preparation tank up to first pressure. The second piping is filled with the liquid by closing the valve to an opening less than a full opening, and continuously pressuring the inside of the preparation tank until second pressure is reached, and the liquid in the second piping is made to flow in the third piping so as to push air in the third piping and fourth piping out to the side of the storage tank and also to pump the liquid to the storage tank.SELECTED DRAWING: Figure 1 |
