Chain type locking mechanism

The utility model relates to a chain type locking mechanism which comprises a locking chain or a locking steel belt and a protruding edge capable of being matched with the locking chain or the locking steel belt, the chain type locking mechanism is arranged between a pot body and a pot cover, a pot cover U-shaped ring is arranged on the lower edge of the pot cover in a surrounding mode, and a U-shaped groove is formed in the inner side of the pot cover U-shaped ring in a surrounding mode. The locking chain or the locking steel belt is arranged in the U-shaped groove, and the multiple protruding edges are arranged on the outer side of the upper portion of the pot body in a surrounding mode at intervals. The sealing device has the advantages of being good in locking and sealing effect and convenient to use. 本实用新型涉及一种链式锁紧机构，本实用新型包括锁紧链条或锁紧钢带、可与锁紧链条或锁紧钢带配合的凸沿，链式锁紧机构设置在锅体和锅盖之间，锅盖下沿环绕设置有锅盖U型圈，锅盖U型圈内侧设置有环绕设置有U型槽，锁紧链条或锁紧钢带设置在U型槽内，凸沿为多个，间隔环绕设置在锅体上部外侧。本实用新型具有锁紧密封效果好、使用方便的优点。