| 摘要 |
<p>PURPOSE:To prevent a damage of bladder by a method wherein a projecting seat coupled to a poppet valve is sucked and held by a magnetic force at the bottom part of the bladder. CONSTITUTION:When a magnetic sucking means 27 introduces liquid into a main body 9 of a container to shrink a bladder 10, a projecting seat 17 approaches to a holding lever 19, resulting in that magnets (m), (m) or magnet (m) and magnetic material (m') are attracted to each other to cause the projecting seat 17 to be held by a holding lever 19. When a magnetic force is set at a value higher than a tension force applied to a poppet valve 13 by liquid discharged at a flow rate of about 3l/sec from the supplying and discharging port 12, the bladder 10 holds its reduced condition during its discharging operation and then a smooth liquid discharging operation is performed. However, if the volume of liquid in the main body 9 of the container is reduced due to liquid discharging, the bladder 10 is extended under a gas pressure filled. The extending force is higher than a sucking force of a magnetic sucking means 27, so that the poppet valve 13 descends down to the supplying and discharging port 12, is contacted with the valve seat 14 to close the supplying and discharging port 12, then the bottom part of the bladder 10 is closely contacted with the inner bottom surface of the main body 9 of the container.</p> |
