Incinerator nozzle device and incinerator

The nozzle device comprises a device body and a swing nozzle, a mixing device is arranged at one end of the device body, a flue gas inlet and a secondary air inlet are formed in the mixing device, and an outlet of the mixing device communicates with an inner cavity of the device body; the swinging nozzle comprises a nozzle main body and a driving device, the nozzle main body is rotatably arranged at the other end of the device main body, the nozzle main body is communicated with an inner cavity of the device main body, and the driving end of the driving device is connected with the nozzle main body; according to the nozzle device, secondary air and smoke can be mixed, the smoke can preheat the secondary air, reduce the oxygen content, restrain NOx generation, reduce the oxygen amount of the front arch wall face and the rear arch wall face and slow down the coking condition, the nozzle angle can be adjusted according to the operation condition of the boiler, airflow disturbance is enhanced, hearth airflow is e