Screw Conveyor


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Related to Screw Conveyor: flight conveyor, chain conveyor, auger conveyor

screw conveyor

[′skrü kən′vā·ər]
(mechanical engineering)
A conveyor consisting of a helical screw that rotates upon a single shaft within a stationary trough or casing, and which can move bulk material along a horizontal, inclined, or vertical plane. Also known as auger conveyor; spiral conveyor; worm conveyor.

Screw Conveyor

 

a mechanism whose working member is a shaft with a continuous helical blade (the screw) or individual, pitched vanes. The rotating shaft, housed in a horizontal or inclined trough, moves loose or small piece cargoes or liquids along the trough. Screw conveyors are used in extruders, feeders, and other machines. They offer design simplicity and even feeding, but they have low productivity and efficiency because of the friction of the material against the walls. Feeding is regulated by the frequency of rotation of the screw. A screw conveyor was used in Archimedes’ screw, a device designed to raise water. Screw conveyors in which the screws of two adjacent machines rotate in opposite directions are used to mix materials.

References in periodicals archive ?
The moving auger screw pulled the worker into the screw conveyor.
During discharge the integral Flexicon screw conveyor transfers material to downstream processes and storage vessels.
They can generally be split into two categories, screw conveyors and belt conveyors, but there are many other types and offshoots of the two basic concepts.
Precise control of earth pressure is possible via operator control of the cutterhead, jacking speed and screw conveyor operation.
The bag dump station consists of a hopper, a dust collector, and a flexible screw conveyor.
In the automatic mode, the unloading system receives an input signal from the customer's mixer that simultaneously starts NBE's Bridgbuster massage paddles, transition hopper's mechanical agitator, and incline helical screw conveyor.
The SM-Shaftmount is available with an optional integral backstop clutch, CEMA screw conveyor kits and a unique two-way motor mount.
According to the manufacturer, "a unique feature of the screw conveyor is that it can be disassembled in five minutes and is designed to tuck beck into the truck for storage through the use of an overhead track-and-trolley system.
Highlights of his design include a new twin-tapered bushing system, gear case design (three patentable features), and screw conveyor driveshaft mounting and sealing systems.
Tenders are invited for Dismantling, Shifting of screw conveyor inside the mills, Re-erection including tie rods, Screw conveyor bearing housing and stuffing box and replacement of eroded feed pipe, Mixing box and transition piece with new spares, Replacement and rectification of screw conveyor removable shaft of unit-5&6 mills during annual overhaul period 2018-19.
The new Bev-Con Mobile Flexible Screw Conveyor from Flexicon, Bethlehem, Pa.
NBE flexible screw conveyor gear drives and motors are specified to ensure optimal output torque and motor horsepower--a combination bringing optimal power and conveying efficiency to the application.