The GBJ series belt type drying machine has a box type structure. The box is provided with single layer or multiple layers of conveying belts. The belt type drying machine includes: GBJ series single-layer belt type with the commonly-used drying area specification of 20 M²,used in two sections or three sections. The temperature can be controlled in different sections and can be automatically adjusted according to the settings. GBJ-M（F）multi-layer belt type(turning plate type). The conveying belt can be screen mesh or turning plate. The commonly-used drying area specifications are25 M²and 60 M².The conveying speed and fan volume of the GBJ series drying machine adopt frequency conversion stepless speed adjustment to meet drying requirements of different materials.