C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/16 (2006.01) B01F 3/04 (2006.01) C02F 3/22 (2006.01) B01F 7/00 (2006.01)
Patent
CA 2443943
The invention concerns a device (10) for stirring and aerating a liquid (3) in a treatment vessel, comprising: at least a funnel (11) designed to be arranged in the upper part of said vessel (1) providing a passage (11a) with said vessel (1); at least a casing (12) connected to said funnel (11) and designed to extend towards the bottom of said vessel (1), said casing (12) including at least an opening (12a, 12b) in each of its upper and lower parts; at least a main stirrer (13) located in said sheath (12); means (14, 15) for driving said stirrer (13) in rotation; and means (17, 18) for incorporating air in said liquid. Said device is characterised in that said air incorporating means (17, 18) comprise, besides the upper edge of the funnel (11), peripheral means arranged proximate to said edge, adapted to incorporate in said liquid (3) air at atmospheric pressure under the sole effect of the movement of said liquid (3).
Ce dispositif (10) pour brasser et aérer un liquide (3) dans une cuve de traitement (1) comprend : au moins un entonnoir (11) destiné à être disposé dans la partie supérieure de ladite cuve (1) en ménageant un passage (11a) avec cette cuve (1); au moins une gaine (12) reliée audit entonnoir (11) et destinée à s'étendre en direction du fond de ladite cuve (1), ladite gaine (12) comportant au moins une ouverture (12a, 12b) dans chacune de ses parties supérieure et inférieure; au moins une hélice principale (13) située dans ladite gaine (12); des moyens (14, 15) pour entraîner ladite hélice (13) en rotation; et des moyens (17, 18) pour incorporer de l'air audit liquide. Ce dispositif est remarquable en ce que lesdits moyens d'incorporation (17, 18) d'air comprennent, outre le bord supérieur dudit entonnoir (11), des moyens périphériques disposés au voisinage de ce bord, adaptés pour incorporer audit liquide (3) de l'air à la pression atmosphérique sous le seul effet du mouvement dudit liquide (3).
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Innova Environnement
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