A screw feeder is a mechanical device used to accurately control the flow of bulk materials—such as powders, granules, or pellets—into a process or packaging system. It is commonly used in industries like food, pharmaceuticals, chemicals, and plastics, where precise feeding and dosing are essential.
A screw feeder uses a rotating helical screw (auger) housed in a tube or trough. As the screw rotates, material is moved forward in a controlled and consistent manner. The speed of rotation determines the feed rate.
Hopper: Holds bulk material before feeding
Screw (Auger): Rotates to move material
Drive Motor: Powers the screw
Discharge Outlet: Releases material into the next stage
Volumetric Screw Feeder: Delivers a consistent volume of material per unit of time; suitable for non-critical dosing tasks.
Gravimetric Screw Feeder: Uses load cells to measure and adjust the feed rate based on weight; ideal for high-precision applications.
Chemical dosing
Food ingredient feeding
Plastic pellet extrusion
Powder filling in packaging machines
Accurate feeding for both free-flowing and sticky materials
Continuous and controlled flow
Easy integration into automated production lines
Customizable designs for various materials and flow rates
Screw feeders are essential components in modern manufacturing and processing. Their ability to provide accurate, consistent, and reliable feeding makes them a go-to choice for industries requiring precise material handling.