Out overflow weir instead of inner overflow weir increases the sedimentation area and not easy to block;
Oblique feeding instead of horizontal feeding solves the blockage problem;
A tranquil flow device reduces material flow rate, so that the overflow becomes more uniform with lower turbidity.
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The vertical axis rotates driven by motor, and pulp by feeding device flows into the tank center feed mixing barrel.Solid material in the bottom of the tank by the scraper moves out of center; clarified overflow through the tranquil flow device flows out from the ring external overflow weir.