SU1180358A1 - Aerator - Google Patents

Abstract

AERATOR containing main poli shaft, main rotor mounted in its lower part, drive c. base plate, water and air supply units, characterized in that, in order to increase the aeration intensity by hydrodynamic radiation in the mode of acoustic oscillations and enhance cavitation, it is equipped with an additional hollow shaft located outside and coaxial to the main, reduction chamber located under the drive, and made of a hollow cylinder with fractions of locational rollers interacting with hollow shafts, and an outer casing, an additional rotor of opposite rotation located outside and equidistant Ntno main, with cavitation teeth attached to the outer surface of the additional rotor, while the periphery of the rotor is made holes that are located at the same central-g angle and have a pitch corresponding to (Leading the step of the cavitation teeth, the air supply unit is made in the shape of a curved a nozzle attached to the outer casing under the reduction chamber and in hollow shafts are made with longitudinal holes for air supply ... 00 о оо СП 00

Description

This invention relates to devices for dissolving air oxygen in a liquid. The aim of the invention is to increase the intensification of aeration by hydrodynamic radiation in the mode of acoustic oscillations and enhance cavitation. To achieve this goal, the aerator is installed directly in the bio-oxidant and the design of the aerator itself is modified. FIG. 1 shows a schematic side view of the aerator; FIG. 2 is a section A-A in FIG. 1; Fig, 3 - rotors aerators, a longitudinal section; Fig. 4 is a section B-B in Fig. 3; The aerator comprises an outer rotor 1 consisting of an upper 2 and lower 3 cover, a side surface 4 with openings 5, an internal rotor 6 from the top 7 and a niche 8 covers, a side surfaces 9 with openings 10 and vanes 11: The outer rotor 1 has an inlet chute 12 for water intake, the grinder rotor 6 is connected to the inner hollow shaft 13, and the outer rotor 1 to the outer hollow shaft 14, there are seals between the hollow shafts 15, the outer casing 16 is connected from above to the reduction chamber 17, consisting of a side cylindrical th surface f8, top 19 and bottom 20 of end disks. The upper face disk 19 is bolted 21 and is connected by a supporting plate 22 of an electric motor 23, Inside the reduction chamber 17 between the inner .13 and outer shafts 14 axles 24 are equipped with friction rollers 25, which provide opposite rotation of the inner rotor 6 to the rotation of the outer rotor 1. from the electric motor 23 through its shaft 26, an external intake pipe 27 is connected to the outer casing 16, opposite to which in the inner 13 and outer 14 hollow shafts, respectively, there are longitudinal openings 28 and 29. surface 4 of the outer rotor 1 is fixed cavitation teeth 30, between which there is a cavity 31. The device works as follows .. When starting the motor 23, the internal hollow shaft 13 with the inner rotor 6 receives rotational movement. At the same time, in the reduction chamber 17, friction rotates around the axes 24 rollers 25, which, by acting on their surface on the inner hollow shaft 13, transmit a rotary motion to the outer hollow shaft 14, as a result of which the outer rotor 1 receives the opposite of the inner roto ru 6 rotational motion. The water through the inlet 12 is sucked through the centrifugal force generated by the blades 11 located inside the inner rotor 6. internal rotor 6, a mixture of sucked water and air enters the holes 10 located on the side surface 9 of the internal rotor 6, when the holes 10 are placed on the side surface 9. The inner rotor 6 with holes 5 on the side surface 4 of the outer rotor 1 causes an impulse to eject an air-air mixture into the cavity 31 behind the cavitation tooth 30, since the number of revolutions of the internal rotor 6 corresponds to the number of revolutions of the electric motor 23, and the external rotor 1 has an rotation, the frequency of coincidence of the holes 10 and 5 or the frequency of hydrodynamic radiation in the mode of acoustic oscillations excites intense pulsation of the mixture in the cavity 31 behind the cavitation tooth 30, Bubble pulsation air creates crushing them into smaller ones. The air / air mixture prepared in this way is further exposed to cavitation tooth 30, which results in a high degree of cavitation, and at the same time an intensive oxygen enrichment of the treated wastewater.

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FIG. 2

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Claims (1)

AERATOR, comprising a main hollow shaft, a main rotor installed in its lower part, a drive with a base plate, water and air supply units, characterized in that, in order to increase the aeration intensity by hydrodynamic radiation in the mode of acoustic vibrations and amplification of cavitation, it is equipped with additional hollow shaft located outside and coaxial to the main, reduction chamber, located under the drive, and made of a hollow cylinder with friction rollers interacting with hollow shafts, and an external the ear, with an additional counter-rotor located on the outside and equidistant to the main one, with cavitation teeth attached to the outer surface of the additional rotor; , the air supply unit is made in the form of a curved nozzle attached to the outer casing under the reduction chamber, and longitudinal openings for air supply are made in the hollow shafts . 1 1 80358