They are normally made of FE510 steel specifically stretched and bended to assume the desired shapes/dimensions. The thickness at the root of the spiral is greater than at the crest in relation to the height of the spiral itself. Standard versions range from 6 mm at the root to 3 mm at the crest. Hardox coils are also available on request.

USAGE

The spirals are welded on a central transmission shaft and inserted inside the pipe or the trough to complete the screw conveyors used to transport powders and small-medium sized granules in general. Mainly used in concrete batching plants, they guarantee a rapid and effective method for the extraction, transport and dosage of cement, ash, calcium carbonate, sand, etc..

BENEFITS

  • Versatility of use
  • Reliability over time
  • Ease of installation
  • Low maintenance costs

 

Extracting spirals

Reference Screw conveyor DN Spiral DN Pace Spiral Thickness Spiral volume (dm³)
Outer Internal Outer Internal
BS802.150 168 150 61.5 100 3 6 1.47
BS802.170 193 170 61.5 120 3 6 2.37
BS802.195 219 195 61.5 130 3 6 3.49
BS802.250 273 250 61.5 150 3 6 6.91
BS802.251 273 250 76 150 3 6 6.68
BS802.300 323 300 76 200 3 6 13.22

 

Conducting spirals

Reference Screw conveyor DN Spiral DN Pace Spiral Thickness Spiral volume (dm³)
Outer Internal Outer Internal
BS801.150 168 150 61.5 150 3 6 2.2
BS801.170 193 170 61.5 170 3 6 3.35
BS801.195 219 195 61.5 195 3 6 5.24
BS801.250 273 250 61.5 250 3 6 11.51
BS801.251 273 250 76 250 3 6 11.13
BS801.300 323 300 76 300 3 6 19.83