Storage tank inner wall and floating disc totally enclosed apparatus

A storage tank inner wall and floating disc totally enclosed apparatus, comprising:

• a tank body,
• a floating disc,
• a pressure relief balance structure, and
• a flexible sealing body structure, wherein
• the floating disc is arranged in the tank body, an edge of the floating disc is provided with an outer frame, the outer frame is provided with a plurality of sealing structures, a top of an inner wall of the tank body is provided with an annular support, the annular support has a cross section in a right-angled-n shape and a hollowed-out bottom, one end of the flexible sealing body structure is fixedly connected with the annular support, an other end of the flexible sealing body structure is fixedly connected with the outer frame, one end of the pressure relief balance structure is sequentially and fixedly connected with the flexible sealing body structure and the annular support, a joint of the annular support is provided with a through hole, the pressure relief balance structure is communicated with the annular support, an other end of the pressure relief balance structure is fixedly connected with the outer frame, the outer frame is correspondingly provided with an exhaust hole, and the exhaust hole is arranged below the plurality of sealing structures.