WATER OXIDATION PLANT FOR WATERS, ESPECIALLY INTENDED FOR FISH PONDS

Abstract: Water oxidation plant for waters especially fish ponds comprising a centrifugal pump the partly in water immersed rotor (4) of which being bowl-shaped and having a suction inlet in the bottom, and having above and concentric with the rotor (4) a fixed likewise mainly bowl-shaped shield (2) dispersing the sucked-in water to all sides. On the inner side of the rotor (4) above the water surface being fastened at least one oblique blade (5) below which said blade(s) (5) is (are) found one or several holes (6) in the wall of the rotor (4). When the rotor rotates water will flow over the blade (5). Hereby a vacuum will form below it causing surrounding air to be sucked in through the hole (6) and mixing with the water.

Description: WATER OXIDATION PLANT FOR WATERS, ESPECIALLY INTENDED FOR FISH PONDS. * The invention relates to a water oxidation plant for waters especially fish ponds, and being of the charac¬ ter specified in the opening paragraph of the patent claim. A plant of the said character is usually placed floa¬ ting on a pontoon, and the rotor of the pump is situ¬ ated above the shield with the shaft leading tight- fitted down to the rotor. When the water through the rotation of the rotor is directed upwards along the in¬ ner wall of the rotor and on against the shield before falling down again, it will be mixed with air, i.e. mainly oxygen. The oxygen content of the water in fish ponds is rather high i.e. with an approximate 80 per cent saturation or more, and a plant of the said character will not be able to increase the saturation rate to any noticeable extent. According to the invention it is suggested that on the inner side of the rotor above the water surface are fa¬ stened at least one oblique blade. Below at least one of these blades are found one or several holes in the rotor. When the rotor is running, water will flow over the bla¬ des. A vacuum will form under the blades and surrounding air will be -sucked in through the hole(s) in the rotor wall. This will substantially increase the oxygen content in the water. In the ollowing the invention will be described in de¬ tails with reference to the drawing in which Fig. 1 shows a vertical section of an oxidation plant according to the invention. Fig. 2 shows the rotor of the plant seen from above, and fig. 3 shows same seen from below. The said water oxidation plant is intended to float on the very water which is to be aerated, and may accor¬ dingly be provided with a carrying pontoon or a float 1 on which is situated one mainly bowl-shaped shield 2 and a motor 3, with the vertical shaft of the latter leading down through the shield. Below and concentric with the shield 2 is placed a partly immersed retor 4 fastened to the shaft of the motor 3. Also the rotor 4 is mainly bowl-shaped and has a suction inlet in the bottom. On the inner side of the rotor 4 is fastened at least one oblique blade 5, below which there being one or several holes 6. When the partly immersed rotor 4 is set running by the motor 3, water vill be sucked in through the hole in the bottom of the rotor wheel, which said water over the in¬ ner wall of the rotor is directed upwards and dispersed to all sides of the shield. When the water flows over the blade(s) 5 a vacuum will form below it. This will cause suction in of surrounding air through the hole 6, which said air is mixed with the water and will result in a considerably higher oxygen content than in already known plants without the said blade(s) and air suction inlets (the said hole(s)).

Claims: P A T E N T C L A I M S 1. Water oxidation plant for waters especially fish ponds and comprising a centrifugal pump of which a partly in water immersed rotor (4) being mainly bowl-shaped, having a suction inlet in the bottom, and having above and con¬ centric with the rotor (4) a fixed likewise mainly bowl- shaped shield (2), dispersing the sucked-in water to all sides, being c h a r a c t e r i z e d i n t h a t on the inner side of the rotor (4_t above the water sur¬ face being fastened at least one oolique blade (5). 2. Plant according TO claim 1, c h a r a c t e r i z e d i t h a t below at least one of said blade(s) (5) . are found one or several holes (6) in the wall of the ro¬ tor (4).

Inventors: FRANDSEN AKSEL SONDERGARD
Applicants: FRANDSEN AKSEL S, FRANDSEN AKSEL SONDERGARD
Application year: 1982
Main classification: C02F1
IPC codes: A01K63, B01F3, C02F3