, ranging from gross excess at the slot ends to minor excess at the ends and centre. Failure to balance the extraction to some degree will lead to the formation of preferential flow channels, with variations in residence time, segregated discharge and the danger of ‘flushing’. More importantly, it leads to eccentric discharge and the danger of structural failure [4].
Conclusion
The ‘initial draw’ effect of a feeder may compensate to some extent at the start of the outlet, but the difference can be difficult to accommodate at the discharge end of the outlet. Matching the feeder extraction pattern with the hopper construction for optimum performance is therefore not the simple matter that it may seem, especially with product that tend to segregate, ‘flush; or one that demands a mass flow discharge pattern.
References
Bates.L. Flow regimes in Hoppers. Ajax Equipment publication
Jenike.A. Storage and flow of solids. Bull 123 Utah Univ Exp. Stn. 1964
Hooke.R. Presentation to Royal Society. 1675.
Rotter.M, Sadowski.A.J. ‘Eccentric discharge buckling of a very slender silo’, Eng.Strucutres 33 (4 1187-1194. April.2011).
Matching Feeder Extraction Pattern with Hoppers
, ranging from gross excess at the slot ends to minor excess at the ends and centre. Failure to balance the extraction to some degree will lead to the formation of preferential flow channels, with variations in residence time, segregated discharge and the danger of ‘flushing’. More importantly, it leads to eccentric discharge and the danger of structural failure [4].
Conclusion
The ‘initial draw’ effect of a feeder may compensate to some extent at the start of the outlet, but the difference can be difficult to accommodate at the discharge end of the outlet. Matching the feeder extraction pattern with the hopper construction for optimum performance is therefore not the simple matter that it may seem, especially with product that tend to segregate, ‘flush; or one that demands a mass flow discharge pattern.
References
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