Screw Conveyor
Screw Machine
A screw conveyor is a type of material handling equipment used to move bulk materials, powders, granules, or semi-solid materials horizontally or at a slight incline. It consists of a rotating screw, also known as an auger, enclosed in a tube or trough. As the screw rotates, it pushes the material along the length of the conveyor, allowing for efficient and controlled material transportation. Screw conveyors are widely used in industries such as agriculture, food processing, mining, chemical processing, and construction.
All kinds of products that are of the powdered texture can be conveyed through this Machine. Products such as – Masala powders, Whole spices powders, Pharmaceutical powders, Atta powder, Maida powder, Castor Sugar, Fertilisers, and much more.
Screw Conveyor for Powder: How the Auger Mechanism Controls Flow Rate and Product Integrity
A screw conveyor uses a rotating helical screw inside a fixed trough or tube to move material from an inlet at one end to a discharge at the other, with the flow rate determined by the screw diameter, pitch, and rotational speed.
For powder applications, the powder transfer screw conveyor is the most controllable bulk material transfer method available because adjusting the screw speed directly and proportionally changes the material throughput, allowing precise feed rate control for upstream processes like mixing, blending, and filling.
Fair Pack’s screw conveyor for powder uses a close-clearance screw in a stainless steel screw conveyor for powder tube with a polished bore, ensuring that cohesive powders like spice blends, milk powder, and flour are swept cleanly from the tube wall without leaving residue.
For pharmaceutical and food applications, the product contact surfaces are manufactured from 316L grade stainless steel with electropolished finish, and the screw feeder conveyor is designed for complete disassembly and wet cleaning in under 15 minutes.
A variable speed drive on the screw motor allows the feed rate to be adjusted from an external control panel or directly from the downstream machine’s PLC, creating a fully integrated powder transfer screw conveyor system that responds automatically to the downstream machine’s demand signal.
Inclined Screw Conveyor for Powders and Heavy Duty Auger Conveyor Applications
The standard horizontal screw conveyor reaches its practical limits when the required transfer involves elevation as well as horizontal distance, and an inclined screw conveyor for powders is the solution for applications where the product must be raised from a ground-level vessel to an elevated filling machine or mixing tank.
Fair Pack’s inclined screw conveyor for powders covers elevation angles from 15 degrees to 75 degrees, with the screw pitch adjusted for the operating angle to maintain consistent feed rate without the product sliding backward inside the tube at steeper angles.
At angles above 45 degrees, a heavy duty auger conveyor with a shorter pitch and more robust screw construction handles the additional torque load.
Screw conveyor manufacturer India customers in the flour, starch, cement, and dry chemical sectors specify the heavy duty auger conveyor for continuous 24-hour operation at throughput rates up to 10 tonnes per hour.
As screw conveyors, Fair Pack’s range includes tube conveyors for dusty environments where an open trough would create air quality problems, and open trough conveyors for applications where inspection and cleaning access is more important than dust containment — all available from Fair Pack as a screw conveyor manufacturer India with ATEX-rated drives for Zone 22 classified areas.
