High-capacity low-temperature soil drying box

The invention relates to a high-capacity low-temperature soil drying box which solves the problems of long time consumption, large energy waste and high cost in the natural air drying process of a large batch of soil samples in the prior art. The heat pump chamber and the drying chamber are communicated through an air inlet and an air outlet, the lower left portion of the heat pump chamber is divided into a compressor chamber through a partition plate, a layer of partition plate is arranged in the middle of the heat pump chamber, and the left end of the middle partition plate is divided into a temperature control chamber through a partition plate; the upper section of the air duct is provided with a fan, the upper section of the air duct is connected with the air inlet of the drying chamber, the lower section of the air duct is connected with the air outlet of the drying chamber, the evaporator is arranged at the lower section of the air duct, and the right side of the evaporator is provided with the air outl