Circulating cooling box of double-screw extruder

The utility model relates to the technical field of circulating cooling boxes of extruders. The circulating cooling box of the double-screw extruder comprises a movable vehicle frame, a cooling box body and a cooling circulating box body are placed at the top position of the movable vehicle frame, a material filtering frame is installed in the cooling box body, and a cooling fin plate is installed on one side wall of the interior of the cooling circulating box body. And an S-shaped water flow pipeline is laid on the surface of the cooling fin plate, and the input end of the S-shaped water flow pipeline communicates with a first water guide pipe. Through the circulation design of the cooling box body and the material filtering frame, the first water pump pumps liquid in the cooling box body and enables the liquid to pass through the S-shaped water flow pipeline, so that high-temperature water can be in full contact with the heat dissipation fin plate, and heat exchange treatment can be carried out on the high-