Air cooling device for rotary cement kiln

The utility model relates to an air cooling device for a rotary cement kiln, which comprises the rotary kiln, a cooling component is arranged at the tail of the rotary kiln and comprises a first conical sleeve, a second conical sleeve and a hollow plugging ring, a water storage framework communicated with an inner cavity of the hollow plugging ring is sleeved in a cooling cavity, and a limit flange is arranged on the outer wall of the first conical sleeve. An air inlet assembly is connected to one side of the hollow air supply ring, a water inlet is formed in one side of the hollow plugging ring, a water outlet communicated with the water storage framework is formed in the bottom of the first conical sleeve, cold air is input into the cooling cavity through the air inlet assembly, liquid in the water storage framework can be kept in a low-temperature state through the cold air, and the cooling capacity of the water storage framework is improved; and then cold air enters the second conical sleeve from the mult