Belt bucket elevator is one of the most widely used material conveying facilities in such industries as grains & oils, food and feedstuff. Its performance being better or worse directly influences the production of processing and the economic development speed is affected by Its working efficiency and advances directly. Only by constantly innovating their designs and techniques, improving its function and work efficiency, belt bucket elevator can be produced to meet the needs of grains & oils, food and feedstuff industries. In the using process, we found that there are the existing problems in three areas.
The unreasonable tension device. The commonly used tension device is screw tension and the tension strength of empty and load is inconsistent, which shows that the tension means of the tension device is unscientific and poor tension control is easy to cause traction belt deviation and tear the belt.

The unreasonable structural design of belt joint. The method that belt docking with splint joint formed by bending steel plates is adopted, which has the disadvantages of limited flexural strength of the steel plate, flexible type, no guarantee that the joint belt is always in a smooth and free state in straight and circular motion after clamping, and easy to cause the joint wire rope fatigue fracture and belt surface debonding.
The hopper is directly connected with the belt, and the friction resistance is small. The lifting force is mainly transferred by the connecting bolt, so that the stress of the belt is not even and it is easy to damage the belt.
In addition, the deviation of the belt of belt bucket elevator in the operation is inevitable, and it is inconvenient to rely on manual observation.
The first scheme: the gravity tension structure is adopted to replace the original screw tension structure, which of the specific structure is to take a counterweight tension wheel, which is connected to the rotating shaft of the passive wheel by a tension adjustment lever. One side of the wheel is a half gear structure and is equipped with rack gear on its side, and the other side is connected with the guide plate sliding on the side. This improvement ensures that the tension force of the conveyor belt is constant in any state, and the tension method is scientific, the tension force is balanced, well controlled, and the traction belt is not easy to deviate, and the belt will not tear, thus improving the service life of the belt.
The second scheme: the joint of conveyor belt is made by tailor-made combination mould. The combination mould has core module and left and right modules, which are connected together by bolts. A 90° arc-shaped groove is designed between the core module and left and right modules to install the transfer belt head. The end of the combination mould is also designed with a filling box to place the rubber belt wire head and add the filling material. Adopting the structure of combined mould chuck, which can ensure that the belt always maintains a smooth and free state at the junction when the belt moves in a straight line and a circle after clamping.It can not only ensure the strength of the joint, but also ensure that the wire rope at the joint is hidden in the filling box without excessive fatigue and breakage of the belt.
The third scheme: a rubber blanket is provided on the joint surface of the hopper and the conveyor belt. Due to the elastic rubber blanket between the hopper and the belt, the lifting force is transmitted by the friction between the belt and the hopper, which not only ensure the uniform stress of each wire rope in the belt, but also improve the lifting ability and service life of the belt.
To correct the deviation of the belt in time without manual monitoring, the deviation switches are installed on the rack of the belt bucket elevator on the left and right sides of the conveyor belt to stop the machine in time after the deviation of the belt.