External welding machine with welding flux treatment equipment

The utility model provides an external welding machine with welding flux processing equipment, the external welding machine comprises a portal frame, at least one welding arm and the welding flux processing equipment, a cross beam is arranged on the portal frame, and the welding arm is connected to the portal frame in a sliding mode through a sliding rail fixed on the side face of the cross beam; the welding flux treatment equipment comprises a welding flux supply and recovery integrated box which is installed on a welding arm and used for supplying welding flux to a welding position and recovering unused welding flux at the welding position; the dust removal device is arranged on the cross beam and is communicated to the welding flux supply and recovery integrated box through a smoke dust recovery pipeline; and the blower device communicates with the dust removal device through a negative pressure pipeline, and the blower device is used for providing negative pressure into the dust removal device so as to pr