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Screw conveyors

Screw conveyors are continuous conveyors for all gradients. Since they form a closed unit and can take on process-related tasks, they are indispensable for corresponding tasks, despite the increased power requirement, when compared to belt conveyors or bucket conveyors. Material is continuously conveyed by means of the shaft lying in a tube or trough with one or more spirally wound passages. The prerequisite is that the material is prevented from rotating by the force of gravity and sufficient friction of the transported material against the walls. Otherwise, the material will only rotate transversely to the screw axis and will not be transported. The material to be conveyed can be transported horizontally, diagonally and vertically. In the case of vertical transport, however, wall friction must be generated through centrifugal force, which requires high speeds of 250-400 rpm. Processing steps such as mixing, drainage or compression can be performed during transport. Cooling or drying is also possible.

Scope of application

  • Gravel plants
  • Concrete plants/concrete recycling plants
  • Stone crushing plants
  • Quarries
  • Excavation washing plants
  • Cement plants
  • General materials handling

Accessories

  • Electric motor
  • Reduction gearing
  • Inspection openings
  • Feed/discharge flange
  • Screw axle