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PUMPS: WORKING ON ARCHIMEDES PRINCIPLE


July 1, 2000
By Pulp & Paper Canada
Weir-Enviro: In thick sludges

MISSISSAUGA, ON — Weir-Enviro Tech Pumps Canada, a division of Peacock, has introduced a screw/centrifugal impeller that combines the clog-free features of a vortex pump with the gentle action of a s…

MISSISSAUGA, ON — Weir-Enviro Tech Pumps Canada, a division of Peacock, has introduced a screw/centrifugal impeller that combines the clog-free features of a vortex pump with the gentle action of a screw pump, while maintaining the high efficiency of a centrifugal pump. “This combined design and its large, continuous open channel is proven for trouble-free handling of medium-consistency fluids, making it ideal for handling large, soft solids such as paper stock, pulp, wood chips, bark, heavy sludges and mill waste of the pulp-and-paper industry,” said Mark Marcos, senior product manager, Wemco products. The impeller’s screw section produces positive action. In a clear liquid, it performs like an Archimedes spiral. In thick sludges, slurries and suspended solids, the impeller burrows like a corkscrew to start material moving and keep it moving. The centrifugal section produces a steep head-capacity curve for non-overloading performance, and its smooth flow and low turbulence keep hydraulic losses to a minimum.

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