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Flexible Screw Conveyor Terms

Conveyor Screw – The driving force of a screw conveyor, consisting of a spiral flight fused to a metal pipe that rotates within the conveyor trough.
 
Discharge End – The point of exit for conveyed materials.
 
Double Pitch Screw – Conveyor screw containing two flights.
 
Flight – The metal spiral ridges or threads on a screw.
 
Flow – A product’s direction of travel on a conveyor.
 
Frame – The structure that supports the various components of the conveyor.
 
Hanger – Screw conveyor mechanism that aids in the correct alignment of the conveyor screws.
 
Helicoid Flighting – Screw conveyor flight that consists of a continuous metal strip configured in a spiral shape.
 
Horsepower – A measure of the time rate of doing work.
 
Inlet Opening – The point of entry for conveyed materials.
 
Liner – A barrier placed between a conveyor screw and a screw conveyor component, such as a trough, to reduce friction between the screw and trough.
 
Long Pitch Screw – Conveyor screw in which the pitch is greater than the diameter of the screw.
 
Motor – The machine on the conveyor that converts electrical energy into mechanical energy.
 
Multiple Ribbon Screw – Conveyor screw containing more than one ribbon flight along the length of the screw.
 
Paddle Screw – Conveyor screw containing blades attached at different angles, depending on the industrial application, used for mixing, blending or similar applications.
 
Pitch – Distance between conveyor screw flights.
 
Ribbon Screws – Conveyor screws that contain sectional flighting and are used to prevent sticky conveyor materials from accumulating inside screw conveyor pipes.
 
Sectional Flighting – A screw conveyor flight consisting of individual bends or sections, fused together into spiral form. Sectional flighting is created by inserting a ring in a hydraulic press, and is a durable, yet sometimes expensive, type of flighting useful in tough applications, such as those in the construction and mining industries.
 
Shaft – The portion of the screw that provides support onto the flight to which it is fused.
 
Short Pitch Screw – Conveyor screw in which the diameter is greater than the pitch. Short pitches are used on inclined screw conveyors with slopes measuring 20° or greater.
 
Total Load – The total amount of material being conveyed at any particular moment in time.
 
Trough – A duct inside of which the screw is inserted and through which the materials are conveyed.
 
Variable Pitch Screws – Conveyor screws in which the pitch increases along the length of the screw.