screw conveyor

Efficient solution for bulk material transportation

KARMEL screw conveyor – is a reliable and productive mechanism for horizontal, inclined, or vertical transportation of powdery and granular materials (cement, sand, ash, lime, mineral powder, compound feed, etc.).

Thanks to its compact design, dosing accuracy, and low operating costs, KARMEL screw conveyors are widely used in concrete batching plants, asphalt plants, the agricultural sector, and the construction industry.

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Types of KARMEL screw conveyors

Horizontal screws – uniform material transportation without height change
Inclined screws – material feeding at an angle (up to 45°)
Vertical screws – material transportation to a significant height
Double-flight screws – increased feeding capacity
Mixed systems (modular screws) – possibility to combine different types

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Structural elements of the KARMEL screw conveyor

1. Screw tube

- High-strength steel with anti-corrosion coating
- Sealing to reduce dust emission

2. Helical screw (spiral shaft)

- Wear-resistant steel (HARDOX, stainless steel for aggressive materials)
- Optimal blade shape for uniform movement

3. Support bearings

- Special seals for long-lasting operation
- Minimal friction and wear under intensive use

4. Drive mechanism

- Electric motor with gearbox (chain or belt drive)
- Adjustable rotation speed for precise dosing

5. Automated control system (optional)

- PLC control with touch display
- Programmable feeding and stopping modes

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Technical specifications of KARMEL screw conveyors

Characteristic	Value
Capacity	5-150 t/h
Tube length	1-15 m (modular extension)
Screw diameter	100-400 mm
Tube material	Steel, stainless steel
Screw spiral material	High-strength steel (HARDOX)
Inclination angle	0-45°
Drive type	Gear motor
Automation	PLC control (optional)