Automatic discharge sealing device for discharge plant

The utility model relates to an automatic discharge sealing device for a discharge plant, which belongs to the sealing device. The automatic discharge sealing device is characterized in that a steel platform is arranged below a fan-shaped swinging discharge valve and is provided with a main through hole in a position corresponding to the fan-shaped swinging discharge valve, a flexible cover is arranged in the main through hole of the steel platform and is connected with a lower dust-collecting cover, the lower dust-collecting cover is of a hemispherical dome shape, the lower cover body of the lower dust-collecting cover corresponds to a train compartment, a right-angle pull rod is arranged on the lower dust-collecting cover, a vertical rod is respectively arranged on the steel platform on the left side and the right side of the main through hole, the left vertical rod and the right vertical rod are respectively hinged with an electric push rod, the electric push rods are hinged with a connecting rod through a