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A trough with a helical line moving solids.
Also known as: Auger conveyor symbol, Screw feeder symbol
On a process diagram a screw conveyor is drawn as a trough containing a helical line, moving bulk solids along its length by rotation.
Denotes a conveyor moving bulk solids by a rotating helical screw.
Contexts: Technical drawing
Belongs to the solids handling group, which the equipment standard covers alongside the fluid equipment on the same diagram.
Contexts: Technical drawing
A long horizontal rectangle containing a continuous spiral line running its length.