The bearing surface adopts "dumbbell type single roller" structure instead of the traditional groove type three roller structure. The roller and the conveyor belt are sealed in the middle box, which can meet the outdoor transportation of bulk materials with sealing requirements. The air chamber structure is used as the bearing for the return belt, and the friction resistance is small;
The matched horizontal plow unloader can be set at any position in the middle of the conveyor to realize multi-point unloading in the middle of the belt conveyor.