The channel screw spiral conveyor, or closed screw, is defined as such because the exterior casing is a closed tube in which openings are placed to enable the entry feeders and exits for the product, as well as any required monitoring openings.
This type of equipment is used to transport materials where handling may influence various aspects, such as greater leakage of dust, smell, even liquids, or due to the mounting position being extremely inclined, perhaps even being completely vertical.
The diameter measurements of this equipment are normally dependent on the standards of the channels.
Designs
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