Real-time uniform flow mixing device for primary air at inlet of coal mill

The invention discloses a coal mill inlet primary air real-time uniform flow mixing device which comprises a main air duct, a first input air duct and a second input air duct, and the first input air duct and the second input air duct communicate with the main air duct and are used for inputting cold air and hot air correspondingly. The first input air duct communicates with the end of the main air duct, the second input air duct communicates with the side edge of the main air duct and extends into the main air duct, and the output end of the second input air duct is provided with a plurality of branch channels communicating with the output end of the second input air duct. And the outlet position of each branch is provided with an air volume adjusting door for controlling the air volume of the branch. The multiple branch channels are arranged at the tail end of the second input air channel, the cold primary air is divided into multiple air flows, the air outlet positions of the branch channels are evenly arr