Pretreatment roller coating device for plates of refrigerated container

The utility model provides a refrigerated container plate pretreatment roller coating device which comprises a roller coating device, a drying device and a guide assembly, an upper layer roller coating chamber provided with an upper layer roller coating machine and a lower layer roller coating chamber provided with a lower layer roller coating machine which are communicated with each other are arranged in the roller coating device, and conveying of a steel belt is achieved through the guide assembly. And the conveying line comprises an upper-layer roller coating chamber, a drying device, a lower-layer roller coating chamber and a drying device. By arranging the upper-layer roller coating chamber and the lower-layer roller coating chamber, double-sided local area roller coating of the steel belt is achieved; and in the roller coating process, the single face is pre-dried through the drying room, and the processing performance in the double-face roller coating construction process is guaranteed. After the refri