Lime conveying protection device of lime tank truck

The utility model relates to a lime conveying protection device of a lime tank truck, and belongs to the technical field of sintering. Comprising a protection pipeline, the outlet end of the protection pipeline is communicated with a tank car inner cavity, and the tank car inner cavity is communicated with a stock bin inner cavity through an ash conveying pipeline unit; an ash conveying quick switching valve, a pressure reducing valve and a pressure switch are sequentially arranged on the inlet side of the protection pipeline, and the ash conveying quick switching valve controls the protection pipeline to be switched between cut-off and connection; the protection pipeline is connected with a bleeding pipeline, and the bleeding pipeline is provided with a bleeding valve; the pressure switch is in signal connection with the operation box and monitors the pressure of the inner cavity of the tank car in real time, and then the ash conveying fast switching valve and the blow-off valve are controlled. The device is