In the woodworking industry our chain conveyors, belt conveyors, elevators and screw conveyors are used for conveying woodchips and shavings.
In trough-chain conveyors a single-line or two-strand chain with closely successive chain flights is moved in a closed trough at a moderate speed. At the feed point, the bulk material falls on the promotional chain strand and is initially taken by the crossbars and then through the layer of material already in motion. The movement of the lower material layers is transferred to a certain, self-adjusting height to the top, so that the whole forms a gliding conveyed at a uniform speed body along with the chain. The cross section of the material being conveyed is many times greater than the driver device. In this way large quantities can be carried with relatively small cross-section. Conveyors can be used for an angle from 0-90 degrees.
Components of a trough chain conveyor are: Drive and terminus, trough, conveying chain. KEITEL CONVEYORS only uses conveyor chains with drop-forged chain links, for which our benchmark is Buehler Quality.
Due to its robust construction, mechanical chain conveyors are ideal for continuous use. Maintenance and repair costs are relatively low in these systems. Next advantage is the dry and dust-free promotion through the closed system.
Another possibility for conveying of bulk materials is the use of belt conveyors, the slightly cheaper alternative to the trough-chain conveyor. Belt conveying systems can be used up to a slope of about 27 degrees. As a rule, it is on belt conveyors to open systems, so that the conveyed material is not protected from moisture, also is the flow rate lower compared to the trough chain conveyors
If bulk material has to be transported only over short distances, screw conveyors are suitable. Here, the enhancing member has a helical surface of sheet or strip which is rotated about its own axis and pushes the material to be conveyed forward in a trough or tube.