At present, most of the bulk materials transported by conveyor belts are flat belt conveyors. The flat conveyor belt is laid on the conveyor and forms a groove naturally by the side roller groove angle of the conveyor, carrying the material for transportation. This conveying structure is prone to bulk material dust flying and spilling, or solvent-containing materials flowing, causing serious environmental pollution and material loss. The rubber tubular conveyor belt is the main supporting equipment of the tubular belt conveyor. It is based on the above-mentioned conveying defects. The conveyor belt forms a tubular shape when conveying materials during the entire conveying process. The materials are transported in a closed system throughout the entire process, and the technical characteristics of small radius space turning and large inclination angle arrangement are achieved. This project is also fully adapted to the current environmental protection needs.

Tubular conveyor belts are generally divided into two types: fabric core tubular conveyor belts and wire rope core tubular conveyor belts according to the different load-bearing skeleton materials used.

Structural Characteristics

The structure of the tubular conveyor belt is different from that of the ordinary conveyor belt. It is mainly to ensure the need for tubularity. According to the different rigidity requirements of the belt, the structure is specially adjusted. The structure of layered tubular conveyor belts is generally composed of canvas belt core, rubber covering layer, edge rubber and adhesive, and also requires a transition layer, and some require a transverse rigid layer. The structure of wire rope tubular conveyor belts is generally composed of wire rope belt core, rubber covering layer, rubber core rubber, transition layer, transverse rigid layer, etc.

Depending on the size of the pipe diameter and the nature of the conveyed material, fabric core tubular conveyor belts usually have two types: ordinary structure and belt transition layer structure. Unlike layered belts, steel wire rope core tubular conveyor belts do not have skeleton fibers connected horizontally. Its transverse strength mainly comes from the strength of the rubber itself, and its supporting force is relatively insufficient. In order to ensure the need for tubularity, a transverse rigid layer is usually added between the covering rubber and the longitudinal wire rope.

In order to prevent the occurrence of phenomena such as collapsed pipes, twisted pipes, flat pipes, etc. that cannot be used normally, a reasonable transverse rigidity value of the conveyor belt must be achieved, and the rigidity value is mainly given by the conveying system and realized by the belt structure.