Box type inner floating disc for storage tank

The invention relates to the technical field of inner floating discs, in particular to a box type inner floating disc for a storage tank, which comprises a fixing ring, a plurality of floating boxes are arranged in the fixing ring, the plurality of floating boxes are connected through a connecting mechanism, an abutting mechanism is arranged on the fixing ring, and a hoisting mechanism is connected to the abutting mechanism; the connecting mechanism comprises a clamping assembly, an automatic locking assembly and an air leakage warning assembly. According to the box type inner floating disc for the storage tank, by arranging the automatic locking assembly, when oil and gas leakage occurs, leaked oil and gas can drive the threaded rod to rotate, the distance between the two floating boxes is shortened through spiral transmission, attachment between the floating boxes is tighter, oil and gas leakage is stopped in time, and safety is improved. 本发明涉及内浮盘技术领域，具体为一种储罐用箱式内浮盘，包括固定环，所述固定环内设置有多个浮箱，多个所述浮箱之间通过连接机构相连接，所述固定