Worm Screw Conveyor

noun. engineering a duct along which material is conveyed by the rotational action of a spiral vane which lies along the length of the ductAlso called: worm conveyor.A screw conveyor or auger conveyor is a mechanism that uses a rotating helical screw blade, called a "flighting", usually within a tube, to move liquid or granular materials. They are used in many bulk handling industries.Plug screw conveyors are heavy duty conveyors used to isolate upstream equipment from challenging downstream conditions such as chemical vapors, high temperatures and pressure differentials.