C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/9
C02F 3/02 (2006.01) B23Q 11/10 (2006.01)
Patent
CA 1116760
ABSTRACT OF THE DISCLOSURE A continuous stream of liquid is drawn from a machine tool system settling tank whilst the system is shut down, aerated outside the tank and returned to the tank. The aerator extends upwards from the liquid in the tank and comprises a series of down- wardly sloping surfaces below a pyramid-shaped deflector which is coaxial with and below the inlet of the aerator. The upper end portion of each downwardly sloping surface extends below a space formed at the lower end of the surface immediately above. A fresh air inlet communicates with each such space. The bottom downwardly sloping surface extends below the level of liquid in the tank. The stream of liquid is directed onto the apex of the deflector by which it is converted into a spray which falls onto and cascades down the downwardly sloping surfaces inter- mingling with fresh air as it passes through the spaces so that the liquid is aerated. The aerated liquid is returned to the tank gently by the bottom downwardly sloping surface. - 1 -
295889
Cera International Limited
Gowling Lafleur Henderson Llp
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