Water sealing device for vacuum acid liquid circulation acid pickling tank

The invention relates to a water sealing device for a vacuum acid liquid circulation acid pickling tank. The water sealing device comprises the acid pickling tank and a horizontal slide rail frame arranged on the two outer sides of the acid pickling tank, the acid pickling tank is provided with a sealing water tank at the edge surrounding a tank notch, an installing sliding frame is connected to the horizontal slide rail frame in a sliding manner, the installing sliding frame is erected on the upper part of the acid pickling tank, supporting sliding foot plates are arranged on the two sides ofthe installing sliding frame, the bottom ends of the supporting sliding foot plates are provided with supporting rollers connected to the horizontal slide rail frame in a matched manner, and the outer side wall faces of the supporting sliding foot plates are fixedly provided with horizontal displacement driving motors. According to the water sealing device, water seal structures are arranged at an opening part of the aci