Separator with solids diverter
AssigneeHydro International plc
InventorsPaul Jeremy Lecornu, Bruce Peter Smith, Robert Yawgyamfi Andoh
Life of this patent
Estimating the term…
Abstract
A separator includes a barrier 53 for retaining solid material thereon and an automatic mechanism for alternately preventing and allowing the flow of liquid to the separator outlet. When the flow is prevented, the liquid backs up through the barrier and washes the solids to a solids collection region 55. In one embodiment, the automatic mechanism includes a pivoted flap 101 and, in another embodiment, a siphon.
Claims9
A hydrodynamic separator, having an inlet for a liquid-solid mixture, an outlet, a hydrodynamic separation device for the mixture where solids therein are separated out due to a flow pattern of the mixture, and, downstream of the hydrodynamic separation device and upstream of the outlet, a diverter for solid material in a form of a perforated barrier located such that the mixture passes to the barrier, with liquid passing generally downwardly through the barrier towards the outlet and solid material being retained on the barrier and being washed by the liquid towards a solids collection region, characterised in that the separator further comprises, located in the outlet, an automatic mechanism responsive to a level of liquid in said mechanism for alternately preventing and allowing a flow of liquid through the outlet, such that, when liquid flow is prevented through the outlet, the flow of the liquid backs up from the outlet and liquid flows back up through the barrier, until it reaches a level at which the mechanism operates to allow the flow of liquid through the outlet.
A separator for a liquid-solid mixture, the separator comprising:
- an inlet;
- an outlet;
- a diverter for solid material in a form of a perforated barrier, located upstream of the outlet such that, in use, solid material is retained on the barrier and liquid flows through the barrier;
- and,
- located between the diverter and the outlet, such that liquid having flowed through the barrier passes thereto, an automatic mechanism for alternately preventing and allowing a flow of liquid therethrough to the outlet such that, when liquid flow to the outlet is prevented, liquid flows back up through the barrier, so that solid material retained on the barrier is washed by the liquid towards a solids collection region, wherein the mechanism comprises a siphon, having a siphon inlet and a siphon outlet, and defining a crest therebetween, and having an air inlet pipe having a first end and a second end, the first end being connected to the crest, and the second end being located on an inlet side of the siphon above the siphon inlet in an open-topped box having walls with tops, the tops of the walls being at a higher level than the second end of the pipe.
Dependencies are inferred from the claim text.