Magnetic belt conveyor is currently the most advanced conveying equipment, and can be divided into magnetic attraction and magnetic repulsion two types. Users can analyze their characteristics to choose the suitable one.
When the magnetic belt conveyor belt is at work, the permanent magnetic electromagnet after energized will impose a stable field superimposed by permanent magnetic field and electromagnetic field around the belt. The flexible iron boron material inside the belt, which Curie temperature is between 200 and 370 degrees, much higher than the operation temperature, makes the magnetic very stable. When the magnetic repulsion force is equal to the gravity consisting of the material and the belt itself, the belt will suspend. Magnetic buoyancy can be adjusted by the current after the electromagnet energizing and the space between the belt and permanent magnetic electromagnet. Analyzing the advantages and disadvantages of magnetic attraction suspension belt conveyor and magnetic repulsion belt conveyor helps users choose the most suitable conveying equipments.
Magnetic attraction suspension belt conveyor uses the normal belt, just non magnetic material. The maglev supporting legs below the permanent magnetic electromagnet and guiding bracket all adopt iron boron permanent magnet material. The maglev supporting legs overcome the gravity of material and belt and then suspend by the attraction of the permanent magnetic electromagnet after energized. When the legs rise to a certain height, the belt will be able to form a suspension state completely separating with the magnetic pad. There is no friction in the horizontal direction due to the suspension state, so the driving force needed is very low, greatly reducing the noise and power consumption.
When the magnetic repulsion belt conveyor is at work, firstly the motor converts the electrical energy into kinetic energy, and the kinetic energy is transferred to the drive roller by hydraulic clutch brakes, reducer and coupling. Then the belt operates by the drive roller. Theoretically, there is no friction in the conveying direction, so the driving power needed is relatively very small. Compared to traditional large driving power, such method greatly reduces the power consumption.
The magnetic material’s properties of such magnetic belt conveyors depends on the levitation force needed. The magnetic levitation system is designed according to the characteristics of the magnetic material, the latest technology and capacity of the belt conveyor. The designing mainly focus on the magnetic circuit structure for the magnetic levitation supporting system.
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