Fermentation device for processing fertilizers

The invention relates to a fermentation device for processing fertilizers. The fermentation device comprises a fermentation chamber, a vent valve, a nitrogen supply pipe, a first solenoid valve, a workbench, a heater, a temperature sensor, a humidity sensor, an oxygen sensor, a barometric sensor, an oxygen supply pipe, a third solenoid valve, an oxygen cylinder, a steam generator, a second solenoid valve, a steam pipe, a nitrogen gas cylinder, a controller and an operation display, wherein the fermentation chamber is arranged on the upper part of the workbench; the vent valve is arranged on the upper part of the fermentation chamber; the nitrogen cylinder, the steam generator and the oxygen cylinder are successively arranged in the workbench; one end of the nitrogen supply pipe is connected with the nitrogen gas cylinder while the other end is inserted into the fermentation chamber; the first solenoid valve is arranged on the nitrogen supply pipe; one end of the steam pipe is connectedwith the steam generator