Gas-adjustable simple biological fermentation device applied to agriculture

The utility model relates to the technical field of biological fermentation devices, in particular to a gas-adjustable simple biological fermentation device applied to agriculture, which comprises an air compressor, a pure oxygen preparation machine, a gas mixer adjusting valve, an oil-water separator, a flow meter, an adjustable gas heater, a gas filter, a thermocouple, a gas inlet pipe and a tank body, the air compressor and the pure oxygen preparation machine are respectively connected with the gas mixer regulating valve through a gas inlet pipeline; the gas mixer regulating valve is sequentially connected with the oil-water separator, the flowmeter, the adjustable gas heater and the gas filter through the gas inlet pipeline; the gas inlet pipe penetrates through the cover of the tank body to communicate the gas filter with the interior of the tank body; a nozzle is arranged at the lower end of the gas inlet pipe in the tank body; the thermocouple penetrates through the cover, one end is positioned inside