Buoyancy type porcelain blank opening height compensation glazing device

The invention discloses a buoyancy type porcelain blank opening height compensation glazing device. The device comprises a mounting base, fixed shaft sleeves are fixedly arranged at the top of the mounting base, rotating shafts in rotating fit with the fixed shaft sleeves are arranged in the fixed shaft sleeves, the bottom ends of the rotating shafts penetrate through the mounting base and are fixedly connected with casing pipes, air pipes penetrating through the rotating shafts along the center axes of the rotating shafts are arranged in the rotating shafts, telescopic sleeves are fixedly connected to the bottoms of the casing pipes, telescopic pipes in sliding fit with the telescopic sleeves are arranged in the telescopic sleeves, hoses are connected between the top ends of the telescopic pipes and the air pipes of the rotating shafts, vacuum suckers communicating with air channels of the telescopic pipes are fixedly arranged at the bottom ends of the telescopic pipes, adjustable height limiting rods are ar