Screw Conveyor

Production Problems It Solves

Powder moved by bags between fixed machines

An enclosed screw transfers the material directly from the receiving point to the next hopper.

A short transfer needing compact installation

The rotating flight moves material along a defined trough or tube without an open belt carrying surface.

Where It Fits in Your Plant

Dry-mix production

Convey cement, lime or mineral filler into a receiving hopper or mixer. Abrasive powders affect flight and trough wear.

Ingredient transfer

Move flour, starch or salt between process vessels with compatible contact surfaces. A normal conveyor is not automatically a precision feeder; a flood-loaded inlet requires feeder-specific design.

How the Screw Conveyor Works

The rotating flight pushes material along the housing. Bearings support the shaft, and seals separate the material from the drive where required. At the inlet, material loading determines whether the unit is conveying a regulated stream or extracting from a filled hopper.

Selection Factors

• Inlet condition: a flood-loaded screw feeder needs a different design from a conveyor receiving a controlled stream.
• Inclination: material fallback reduces useful delivery and can raise torque; size the screw for the actual slope.
• Abrasive powder: flight edges, trough liners and intermediate supports are wear points that affect service life.

Common Issues & Checks

• Low output: inspect inlet bridging, incorrect rotation and material fallback on inclined sections.
• Overload at restart: inspect retained or compacted material and the inlet loading condition before restarting.