Detachable external cooler for shield pump

The utility model relates to a detachable external cooler for a shield pump. The device comprises a shielding motor and a water jacket arranged on the outer surface of the shielding motor, the external cooler is arranged on one side of the shield pump; the external cooler comprises a cooling cavity, a flange cover is detachably connected with the opening end of the cooling cavity through a bolt, acooling water inlet pipe and a cooling water outlet pipe are arranged on the flange cover, a medium cooling pipe is arranged in the cooling cavity, and the two ends of the medium cooling pipe penetrate through medium pipe inlet and outlet holes respectively and are welded, sealed and fixed to the flange cover. Two ends of the medium cooling pipe are respectively communicated with the medium pipesat two ends of the shielding motor; by arranging the medium cooling pipe, the flow path of a high-temperature medium is increased, the contact heat exchange area of the medium and cooling water is increased, and the cooling e