Pneumatic low-pressure conveyor systems
For the conveying of filtered-out materials to silos or containers and for conveying distances of up to 200 m. The conveying air stream is generated by one or more fans.
Pneumatic low-pressure conveyor systems can be implemented as a single-pipe system or a ring system. In the case of the single-pipe system, a final separator in the form of a filter or a cyclone is always necessary. In a ring system the conveying air is driven in the ring. In this case the silo or container acts as the separator. Light dust particles that are not separated in the silo or container initially remain in the circulation. With most materials the fine dust particles tend to attach themselves to the coarser ones and are thus separated with them. Hence, a concentration of the fine dust particles in the conveying stream is avoided as far as possible. The loading of the conveying stream essentially depends on the grain size, density and form of the material to be conveyed. As a guiding value, one may assume 250 - 300 g/m³. Higher loads are possible under certain conditions.
In cases where there is a high amount of material, e.g. in planing works, where the splinters are directly removed and transported away for further use, this can also be realised with a ring system and several containers. Switchover takes place automatically when the container signals that it is full. Containers are exchanged during operation.
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