Energy-saving, thermal-insulating and high-strength sealed cell cover of aluminum reduction cell

The utility model discloses an energy-saving, thermal-insulating and high-strength sealed cell cover of an aluminum reduction cell. The energy-saving, thermal-insulating and high-strength sealed cell cover comprises a fixing frame and square tubes, and is characterized in that the cell cover is formed through movable lap joint of a female cell cover and a male cell cover; the ladderlike fixing frame is fixedly mounted on top plates of the female cell cover and the male cell cover; the male cell cover comprises male cover square tubes, lower outer grooves I, upper convex grooves I and inner grooves I; and the female cell cover comprises female cover square tubes, upper outer grooves II, lower convex grooves II and inner grooves II. The energy-saving, thermal-insulating and high-strength sealed cell cover of the aluminum reduction cell has better airtight performance, improved thermal insulation property, longer service life, higher whole structural strength, more convenience in operation, lower labor intensity