Trough chain conveyors are continuous conveyors in which the material being handled is conveyed by a chain with flights inside a trough (without any agitation). The cross-sectional area of the material being conveyed is considerably larger than the flights. Trough chain conveyors can be used for both horizontal and vertical conveyance applications.
The principle according to which bulk materials are conveyed in trough chain conveyors rests on the different internal and outer frictional forces at work. If the bulk material’s internal friction (and therefore the pulling force exerted by the chain) is greater than the outer frictional forces between the bulk material and the trough wall, the material being conveyed will be moved forward.
Trough chain conveyors feature the following important components:
A conveyor chain with the corresponding flights (skeletal or solid)
A conveyor trough with redirecting and drive stations
The advantages of trough chain conveyors include their simple and sturdy construction, the fact that they require little space, and simple feeding and discharge points, their enclosed design, and the fact that they are safe in case of an explosion.
However, a high level of wear and the deficient emptying of residues in vertical position constitute disadvantages worth mentioning.
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