| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for opening and closing a container that employs a butterfly valve at an outlet of the container, and can eliminate leakage of powder from the outlet and discharge powder to a supply port easily and efficiently. <P>SOLUTION: The system for opening and closing a container includes: the butterfly valve disposed at the outlet, and configured to be freely opened and closed; a valve locking device provided at the container, and releasably locking the butterfly valve at an outlet closing position; an outlet lid provided on the container, and freely opening and closing the outlet. The system further includes: an opening device for opening the outlet lid; a lock releasing device for releasing the lock of the valve; and a valve operating device configured to be removably fitted to and coupled to a valve shaft of the butterfly valve, to open the outlet lid, and to operate the opening and closing of the butterfly valve whose valve locking device has been released, wherein the devices are separately provided from the container and the outlet of the container is positioned over the supply port. <P>COPYRIGHT: (C)2013,JPO&INPIT |
