Drilling fluid tubular heat exchange system with pretreatment function

The utility model discloses a drilling fluid tubular heat exchange system with a pretreatment function, which comprises a mounting box, a mounting plate is arranged at the bottom of one side of the mounting box, a tubular heat exchanger is fixedly arranged in the mounting plate, a water storage tank is fixedly arranged in the mounting box, and cooling water is stored in the water storage tank. A first water pump is fixedly installed in the middle of the end, facing the water storage tank, of the tubular heat exchanger and connected with a water pumping pipe communicated with the interior of the water storage tank, and a feeding port and a discharging port are formed in the top and the bottom of the end, away from the water storage tank, of the tubular heat exchanger correspondingly. A feeding pipe and a discharging pipe are fixedly installed in the feeding port and the discharging port in a sealed mode respectively, and flange plates are installed on the outer edge faces of the ends, away from the tubular hea