Take rotation type double container lid of auto -lock

The utility model relates to a take rotation type double container lid of auto -lock. The utility model provides a container and container lid, container and seal box flange, container lid and seal box case lid carry out swivelling joint through the mode of bayonet socket and spout respectively, utilize rotation angle's difference simultaneously, realize when the seal box flange is installed to the container container lid and seal box casing cover connection, and container lid and container separation to when having avoided container and seal box to carry out the material transfer, cover at the container and be infected with polluting?substances. On the other hand, the utility model discloses utilize four sets of self -lock device, strengthened to the unexpected condition of material transfer in -process and erroneous operation's strick precaution the security that has improved the material transfer process. 本实用新型涉及种带自锁的旋转式双层容器盖。本实用新型中的容器与容器盖、容器与密封箱法兰、容器盖与密封箱箱盖，分别通过卡口和滑槽的方式进行旋转连接，同时利用旋转角度的差异，实现在容器安装到密封箱法兰的同时，