Intelligent grain drying device based on solar energy

The utility model relates to an intelligent grain drying device based on solar energy, and belongs to the field of agricultural machinery and automatic control. The device is a piece of energy-saving type grain drying equipment based on solar energy for medium and small users; and the equipment utilizes a solar heat collector to convert solar energy into heat energy and store the heat energy by working medium heat absorption and exchange between working medium and air in a drying bin, and can be used at night or in the absence of solar radiation so as to realize the purpose that the solar energy replaces the traditional oil or gas fuel to become a heat source of a dryer. At the same time, when solar energy is insufficient, an assistant far infrared heater is used for compensating. In the aspect of man-machine operation and control, a single-chip receives the bunker data collected by a temperature and humidity sensor real timely, and processes and analyses, so as to adjust the hot air amount and solar energy w