Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1999-01-21
2000-04-25
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209169, 209168, 210194, 2102212, 162 4, B03D 124, B03D 116, B03D 114
Patent
active
060533285
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a baffle suitable for being applied to a reactor for liquids purification, particularly suitable for realising the de-inking of suspensions of recycled paper.
It is known that in the paper working field fittings, which use the flotation in order to realise the de-inking of paper suspensions obtained by recycled paper, are used.
For example, the patent U.S. Pat. No. 4,186,094 which describes a fixture, which comprises a plurality of flotation cells that are arranged in sequence, is known. The liquid to be purified, mixed with air, flows through said cells, inside which the air separates from the liquid in the form of bubbles which capture the impurities and carry them away, realising the purification. The air bubbles loaded with the impurities are pushed away while the purified liquid, which forms what in the technic jargon of the field is indicated with the word "accepted", is sent to the following phases of the process.
The purification system, object of the mentioned patent, but generally all the purification systems belonging to the known technique, present the inconvenience of having a purification efficiency quite low.
In the attempt of improving the purification efficiency, the invention having reference number MI93A001455, on behalf of the same inventor of the present patent, is registered. In said invention a reactor that is essentially formed of a unique tank, in which the liquid to be purified enters the upper part, the purified liquid exits through the bottom and a part of said purified liquid is introduced again in different levels inside the tank, in order to be still further purified, is described. Inside the tank a plurality of rotating blades which, by a vertical shaft with which it is connected, agitates the liquid in order to improve the purification efficiency, is arranged. The present invention sets the purpose of realising a baffle suitable for being applied to a reactor for liquids purification which permits to improve still further the purification efficiency of the reactor, in comparison with the purification efficiencies that are possible to obtain using the reactors belonging to the known technique.
The said purpose is achieved by a baffle suitable for being applied to a reactor for liquids purification, said reactor, according to the main claim, comprising: liquid to be purified with an aeriform substance dispersed in it, in the form of bubbles suitable for capturing the impurities contained in the liquid itself; shaft, suitable for keeping agitated said liquid to be purified, being said baffle characterised in that it is applied to one or more of said one or more blades and it is formed of a disk, supplied with a plurality of through openings, suitable for favouring, during the rotation of said blades, the passing of the descending flow of liquid during the purification, and of the ascending flow of an aeriform substance dispersed in said liquid, in order to favour the stabilization of the turbulent motion of the liquid itself in correspondence with said blades.
According to a preferred embodiment said disk presents a circular shape which affects almost the whole cross section of the tank.
In said disk, which is preferably with a slight thickness, a plurality of inclined tongues, being each of them obtained during the shearing of the disk itself, is present. In said disk the through openings, which are formed of longitudinal slots through which the descending flow of the purified liquid and the ascending flow of the aeriform substance, containing the removed impurities run, are realised.
Said tongues are inclined in comparison with the surface of the disk with an acute angle substantially similar to the angle of inclination of the resultant which is obtained compounding the ascent speed of the aeriform substance with the rotation speed of the disk itself.
All the tongues and the slots belonging to any one of the four quadrants of 90.degree. in which the disk is divided, are parallel to one another and orthogonal to the corresponding tongues and slots reali
REFERENCES:
patent: 2047643 (1936-07-01), Mayer
patent: 2148445 (1939-02-01), Drake
patent: 2148446 (1939-02-01), Drake
patent: 2274401 (1942-02-01), Dromgold
patent: 2626052 (1953-01-01), Carbonnier
patent: 2673724 (1954-03-01), Potts
patent: 2684233 (1954-07-01), Payne
patent: 4431531 (1984-02-01), Hollingsworth
patent: 5335785 (1994-08-01), Kawatra et al.
patent: 5454935 (1995-10-01), Magaraggia
Comer SpA
Lithgow Thomas M.
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