Drag conveying systems characterized by the following operational phases:
1) Loading phase by gravity
- with dosing systems (screw conveyors, rotary valves, vibrating screens, vibrating channels);
- from storage systems (silos, hoppers, sack tip cabinets, FIBC emptying stations);
2) Transport phase
- with flexible transmission organs (cables, ropes or chains) where particle flow is determined by the friction generated between the dragging elements and the material being handled rather than by the thrust created between said elements and the conveyed material;
3) Discharge phase by gravity
- by means of free discharge spouts, slide valves, rotary valves, swing check valves;
4) Return phase