Screw Feeder

A screw feeder is a positive displacement feeding device designed to accurately and consistently transfer bulk solid materials from a hopper or storage vessel into a process.

The feeder uses a rotating helix or screw to move material forward and discharge it at a controlled rate. By varying the speed of the screw drive, the material feed rate can be easily adjusted to meet specific process requirements.

Screw feeders can also transfer bulk solids from a low-pressure zone to a higher-pressure zone while maintaining an effective pressure seal. This makes them suitable for applications where controlled material feeding is required under pressure.

Unlike some other feeding systems, material discharged from a screw feeder does not inherently provide dispersion. Where material dispersion is required, an air dispersion jet can be incorporated below the screw feeder to improve material distribution.

Features & Benefits

• Positive-displacement material feeding

• Controlled and consistent feed rates

• Adjustable feed rate through variable screw speed

• Suitable for continuous and batch feeding applications

• Can handle a wide range of dry bulk materials

• Available in single-screw and twin-screw configurations

• Suitable for volumetric and gravimetric feeding

• Capable of handling pressure-differential applications

• Customizable to suit specific process requirements