| 摘要 |
PURPOSE: A flow prevention apparatus is provided to suck contents remaining inside a container after discharging the contents from the container through a discharging hole. CONSTITUTION: A flow prevention apparatus includes an inlet unit, a bellows unit, a discharging unit, and an air screening valve. The inlet unit(31) is combined with an outlet unit installed on the upper side of a container. The bellows unit(21) contracts and expands by the elastic force. The discharging unit(33) discharges contents from the container to the outside. The air screening valve has the restoration force to block the insertion of air. |
