Cooling and conveying system for producing macromolecular waterproof coiled material

The cooling and conveying system comprises a first cooling box, a second cooling box, a third cooling box and an air drying box, cooling water is arranged in the first cooling box, the second cooling box and the third cooling box, and cooling water outlet pipes are arranged at the bottoms of the first cooling box, the second cooling box and the third cooling box; a valve is arranged on the cooling water outlet pipe, supporting rollers are arranged at the front ends, the rear ends and the interiors of the first cooling box, the second cooling box and the third cooling box, supporting rollers are arranged at the front end and the rear end of the air drying box, and the waterproof roll sequentially passes through the first cooling box, the second cooling box, the third cooling box and the air drying box. A supporting bracket parallel to the conveying direction is arranged in the air drying box and parallel to the two supporting rollers, a first air inlet and a second air inlet are formed in the positions, on the