... , environmentally friendly, energy saving 1, the working principle of: hanging drying tunnel using far infrared heating tube heating, the electrical ... 4, drive conveyor 150 1 set Material: a, hanging conveyor chain, b, hanging conveyor track, c, drive 1 set, d, 1 ... tensioning device. e, Meng steel forming curved track f, hanging hook turn5, control system Supply line flying spray drying tunnel