Bentonite coating mixing device

The utility model belongs to the technical field of bentonite coating mixing, and particularly discloses a bentonite coating mixing device which comprises a soaking barrel and a control system, the soaking barrel is connected with a mixing barrel through a feeding pipe, a coating feeding pipe and a mixing stirrer are arranged on the mixing barrel, and a discharging pipe and a sampling pipe are arranged at the end, away from a feeding pipe, of the mixing barrel; a feeding port is formed in the side face of the upper portion of the soaking cylinder, and a feeding mechanism is arranged on the feeding port. A sampling mechanism is arranged in the sampling pipe; the lifting pulping mechanism comprises a pair of concave sliding rails arranged on the inner wall surface of the soaking cylinder, the concave sliding rails are in axial symmetry relative to the vertical direction of the soaking cylinder, a pair of pulping push rods matched with the concave sliding rails are arranged on the inner wall of the soaking cylin