How to Choose the Right Screw Feeder?

Screw feeders are widely used in industries such as food, chemical, building materials, and metallurgy for conveying and metering powders, granules, or small bulk materials. As production demands evolve, selecting the correct screw feeder model is critical for efficiency. Here’s a concise guide to key factors:

1. Single vs. Dual Tube

Single-tube screw feeders integrate metering and conveying in one tube, ideal for compact spaces.

Dual-tube screw feeders separate material stabilization (upper tube) from metering (lower tube), ensuring stable flow.

Note: Avoid screw feeders for sticky, perishable, or caking materials (e.g., cement pre-mix processes).

2. Screw Blade Types

Solid-flight screws: Best for dry, low-viscosity powders (e.g., lime, coal).

Ribbon-flight screws: Suitable for moderately viscous or lumpy materials (e.g., sludge).

Paddle-flight screws: Designed for compressible or fibrous materials.

Note: Avoid screw feeders for fragile materials (e.g., raw grains) to prevent breakage.

3. Trough vs. U-Type Screw Conveyors

Trough/U-type screw conveyors offer flexible inlet/outlet configurations for industries like chemicals, food, or mining. Standard diameters range from 100mm to 600mm, customizable for specific throughput requirements.

4. Shafted vs. Shaftless Screw Feeders

Shafted screw feeders: Ideal for non-sticky, free-flowing materials (e.g., dry powders, granules).

Shaftless screw feeders: Handle viscous, pasty, or entangled materials (e.g., sludge, waste pulp) with 1.5x higher capacity and longer conveying distances. Supports horizontal or inclined layouts.

Key Considerations

Selecting the right model depends on material properties (viscosity, abrasiveness), throughput, space constraints, and precision requirements. For tailored solutions, Guonuo Technology’s engineers provide expert guidance based on your operational needs and site conditions.

Equip your production line with confidence—choose precision, reliability, and efficiency.