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 | Belt Conveyor
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| A conveyor belt is the carrying medium of a belt conveyor system. A belt conveyor system consists of two or more pulleys, with an endless loop of carrying medium - the conveyor belt - that rotates about them. One or both of the pulleys are powered, moving the belt and the material on the belt forward. The powered pulley is called the drive pulley while the unpowered pulley is called the idler pulley. There are two main industrial classes of belt conveyors.
The belt consists of one or more layers of material. Many belts in general material handling have two layers. An under layer of material to provide linear strength and shape called a carcass and an over layer called the cover. The carcass is often a woven fabric having a warp & weft. The most common carcass materials are polyester, nylon and cotton. The cover is often various rubber or plastic compounds specified by use of the belt. Covers can be made from more exotic materials for unusual applications such as silicone for heat or gum rubber when traction is essential.
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Pipe Conveyor
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The Pipe Conveyor is an enclosed curve-shaped transportation system for all kinds of bulk materials. At the loading and discharging points, the conveyor system is identical with open troughed conveyors. The difference starts after the loading point, where the belt is formed into its typical tubular shape by special idler arrangements over a certain distance and finally is led through idler panels with hexagonal cut outs and offset idler arrangement. At the discharging point, the belt opens automatically after the final idler panel and transfers the material to its next destination. Due to its tubular shape, the conveyor is able to manage horizontal and vertical curves as well as high inclinations. The enclosed transportation system not only protects the conveyed material against external influences such as climatic conditions, it also avoids material loss and spillage and thus, protects the environment. The Pipe Conveyor also meets special requirements such as simultaneous material transport in the upper and lower strand and downhill transport with power-regeneration. It serves the cement and power plants, port handling concepts as well as chemical, steel and mining industries.
- Technical Facts
- Pipe diameters between 150 and 650 mm
- Centre distance up to 10 km
- Curve radius depending on material and topography:
min. 300 x diameter for fabric belts
min. 600 x diameter for steel wire belts
- Angles of inclination up to 300 depending on the material to be conveyed
Advantages
- Protection of the conveyed material against external influences
- Protection of the environment against escaping material by dust-free transport
- Possibility of tight curve radii
- Realization of steep inclination
- Low space requirements
- No need for transfer towers
- Adaptation ability to topographic requirements
- Possibility of downhill transportation
- Simultaneous double load transport of different kinds of material in the upper and lower strand
- Low investment costs
- Low maintenance costs
- High operational safety
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