Machine and pump integrated all-metal screw pump oil extraction device with external rotor

The invention relates to a screw pump oil extraction device, in particular to a machine and pump integrated all-metal screw pump oil extraction device with an external rotor, and belongs to the technical field of oil extraction machinery. The device comprises a shell, a machine-pump integrated all-metal screw pump located in the shell, a dynamic seal located at the lower end of the machine-pump integrated all-metal screw pump and a motion conversion mechanism located at the lower end of the dynamic seal. According to the machine and pump integrated all-metal screw pump oil extraction device with the external rotor, the whole length of a unit is reduced through integrated arrangement of a machine and a pump, so that the trafficability of medium and short curvature radius horizontal well deflecting sections is improved, so that the situations that the unit is stuck due to scaling and the drilling and well repairing cannot be carried out due to overlong underground use time are avoided; meanwhile, by the adoptio