Special conveyor belts mainly include steel cord core belts, high angle belts, heat-resistant belts, cold-resistant belts, flame-retardant belts, wire mesh belts and steel belts. 1 Steel cord core belt: replace the fiber fabric belt conveyor belt with a number of flexible and high-strength special steel wire ropes (Fig. 2). Since the 1960s, the steel cord core has a large number of applications, its breaking strength can be as high as 7000 N / mm, the elastic elongation is very small, the lateral stiffness is small, and the impact resistance is good. Long-distance belt conveyors mostly use such conveyor belts and are also used in some belt feeders. 2 High-angle belts: including low-profile belts, high-pattern belts, transverse belts and ribbed belts (Fig. 3).
The working surface of the short strip is covered with various shapes of rubber bumps or ribs with a height of less than 10 mm to block the layering of the material and to transport the powdery and small particles of bulk material. The height of the bump on the strip surface of the high pattern belt is between 10 and 25 mm to prevent the material from rolling and is used to transport medium and large-sized bulk materials. These two belts increase the conveying inclination by about 10°.