Screw Conveyor FAQs
1. What is a screw conveyor?
A screw conveyor is a mechanical conveying device that uses a rotating helical screw flight to move powders, granules, pellets, and bulk materials.
2. Where are screw conveyors used?
Food, dairy, pharmaceutical, chemical, plastic, mineral, recycling, and process industries.
3. What materials can be conveyed?
Flour, starch, sugar, milk powder, calcium carbonate, talc, fly ash, pigments, PVC resin, and polymers.
4. What are the types of screw conveyors?
U-trough, tubular, inclined, vertical, shaftless, and ribbon screw conveyors.
5. How is screw conveyor capacity calculated?
Based on screw diameter, pitch, RPM, fill factor, and material bulk density.
6. What is the maximum conveying angle?
Typically up to 45°, depending on material characteristics.
7. Can screw conveyors be food grade?
Yes, stainless steel food-grade designs are available.
8. What causes screw conveyor wear?
Abrasive materials, improper speed selection, and inadequate material selection.
Engineered for Reliability
9. What is a shaftless screw conveyor?
A conveyor without a center shaft used for difficult or sticky materials.
10. What is a ribbon screw conveyor?
A screw design used for sticky and cohesive products.
11. Can multiple inlets and outlets be provided?
Yes, customized designs are available.
12. How is speed selected?
Based on material flowability and required capacity.
13. What are common maintenance requirements?
Bearing lubrication, wear inspection, and drive checks.
14. Can screw conveyors be integrated with weighing systems?
Yes.
15. Why choose screw conveyors?
Simple design, reliability, low maintenance, and cost-effective conveying.
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