| 摘要 |
<p>To provide a method for pumping out the liquid in a container easily without any skill, and without liquid leaking between the inner peripheral surface of the container and the seal around a follow plate even if the sealing force of the seal is weakened. SOLVING MEANS A method for pumping out the low-viscosity liquid T in a container P such as a pail includes the steps of inserting a follow plate 10 into the container P, lowering the follow plate 10 by means of a lift, with the seal around the follow plate 10 in contact with the inner peripheral surface of the container P, and driving a pump 2, with the follow plate 10 seated on the surface of the liquid and kept moving downward. The downward load created by the weight of the follow plate 10 and the load of the pump 2 is substantially balanced with the upward load exerted by a spring balancer 38. This reduces the sealing force of the seal 15 around the follow plate 10 against the inner peripheral surface of the container P so that the plate 10 can be lowered according to the amount of liquid pumped out by the self-sucking force of the pump 2.</p> |
