Integrated high-purity nitrogen and argon recovery device

The utility model discloses an integrated high-purity nitrogen and argon recovery device, which is characterized in that an argon recovery flow path and an air nitrogen flow path perform cold energy exchange by utilizing the connection effect of an auxiliary condensation evaporator, and redundant cold energy generated by an expansion machine is conveyed to the argon recovery flow path, so that theamount of liquid argon added from the outside can be remarkably reduced. Reducing the operating cost of a device. Meanwhile, convenience is brought to liquid argon recovery in the field, cold energyis provided by liquid argon, nitrogen and hydrogen are removed by a low-temperature rectification method, the recovery rate of argon and the utilization rate of hydrogen are increased, the low-temperature rectification process and operation are simplified, and the operation energy consumption is reduced. Besides, an integrated air-nitrogen flow path is further utilized, cold energy is generated through the expansion machin