Air purification device convenient to maintain

The invention discloses an air purification device convenient to maintain. The air purification device comprises an outer shell, an inner shell and a guide device; the outer shell is provided with an opening, and a mounting cavity is formed inside the outer shell; the inner shell is arranged in the outer shell from the opening, and air purification chemicals are arranged in the inner shell; the guide device is connected between the outer shell and the inner shell, and the inner shell can move between a storage state and a moving-out state along the guide device; in the storage state, the inner shell is arranged in the mounting cavity, and in the moving-out state, the inner shell moves out of the mounting cavity and is connected with the outer shell through the guide device; and the guide device comprises a guide unit and a rotary connecting piece, the rotary connecting piece is connected between the inner shell and the guide unit, and in the moving-out state, the inner shell rotates by a certain angle along t