Multi-level ash removal self-adaptive sealing gate valve

The utility model relates to a multi-level ash removal self-adaptive sealing gate valve. The device comprises an outer frame, an inserting plate and a labyrinth sealing structure, the inserting plateis vertically connected into the outer frame in a sliding manner; the labyrinth seal structure is mounted in the middle of the outer frame; the inserting plate is vertically inserted into the middle part of the labyrinth sealing structure; the labyrinth seal structure comprises a front labyrinth plate and a rear labyrinth plate. A plurality of horizontal maze hinge plates are arranged on the platesurfaces of the front maze plate and the rear maze plate at intervals from top to bottom; the front labyrinth plate and the rear labyrinth plate are correspondingly installed in the middle of the outer frame with openings facing inwards. The gate valve has the advantages that the gate valve is simple in structure and reasonable in design, the problem of poor sealing performance due to the fact that a traditional gate valv