Air inlet equipment for air suspension pulverized coal based on coal milling system

The invention discloses air inlet equipment for air suspension pulverized coal based on a coal milling system, and relates to the related technical field of building raw materials. The device comprises a pneumatic pump, a transfer shell, a middle pipe, a metal shell and a top cylinder, the transfer shell communicates with a transfer pipe through a gas transmission hole, a pressure valve is fixed in the middle pipe, a conductive block is fixed on one side of the inner wall of the metal shell, the metal shell is connected with a metal ball through a wire, and the top cylinder is connected with a compression spring and a compression column through a partition plate. The pneumatic pump, the transfer shell, the middle pipe, the metal shell and the top cylinder are arranged; the problems that when an existing air inlet device for air suspension pulverized coal based on a coal milling system discharges water, the air conveying pressure cannot be guaranteed, the pressure level of air conveyed into the coal milling sy