Coal mine downhole device with dehumidification function

The invention discloses a coal mine downhole ventilation device with a dehumidification function. The coal mine downhole ventilation device comprises a first chamber, storage chambers, a second chamber, an air cylinder, a negative pressure fan, a gauze, a toxic gas filter layer, a box body, a gas flowmeter, a damping layer, universal wheels, a base, a temperature sensor, a heating box, a first airguiding pipe, a heating block, a heat preservation layer, a third chamber, a second air guiding pipe, an air pump, storage cavities, a first door body, a second handle, an observation window, a second door body, a third door body, an air outlet pipe, a gas detection device, a third handle, a pressure gauge, a control panel and a first handle; and the box body is mounted at the top end of the base, and the first chamber is formed in the top end in the box body. According to the coal mine downhole ventilation device with the dehumidification function, by forming the first chamber, the storage cavities are evenly formed