Corrosion-resistant screw drill structure

The utility model discloses a corrosion-resistant screw drill structure which comprises transmission equipment, a cardan shaft is arranged on one side of the transmission equipment, a stator is arranged at the other end of the cardan shaft, a screw is arranged at the other end of the stator, a lining is fixedly arranged in the stator, a rotor is rotationally arranged on the inner side wall of the lining, and a screw is arranged at the other end of the rotor. A water inlet is formed in one side of the stator in a penetrating mode, a water outlet pipe is arranged on the other side of the stator in a penetrating mode, and the water inlet pipe can be communicated with an external water source, so that cold water is added into the cooling pipe; therefore, heat generated when the rotor rotates is taken away by the cooling pipe through cold water in the cooling pipe, it is guaranteed that the rotor is at a low temperature, the cold water can cool the screw through the water outlet pipe, the cooling effect of the dev