SU1315392A1 - Device for aerating water - Google Patents

Abstract

The invention relates to devices for aerating water and can be used in biological water purification and for aerating water in water bodies. The purpose of the invention is to intensify airflow in the process of capturing and dissolving air in water by crushing air bubbles during the interaction of swirling streams. The device contains a water supplying 1 and air supplying 7 pipelines, an external 2 and an internal 5 confuser. Twisting blades 8 are attached to the inner surface of the confuser 5, and twisting blades 9 curved in the opposite direction to the blade 8 to the outer surface of the confuser 5 and the inner surface of the confuser 2 are connected to the annular cavity located between the end Fusors 2 and 5, channels 10, done & (L oo SP OO (Go go Phag.1

Description

131

The blades are 8. In operation, the water is divided into two streams. One of them is confused. 5, twisted by blades 8 and sucks air from the atmosphere. In the mixing chamber 3, this flow meets with a coaxially oppositely swirled external flow, output 1

The invention relates to devices for aerating water and can be used in the biological treatment of domestic and industrial waters, the preparation of drinking water, and also for aeration of water in water bodies.

The purpose of the invention is to intensify the process of trapping and dissolving air in water due to fragmentation — air bubbles during the interaction of twisted ones; flows.

FIG. 1 shows a device, a longitudinal section; in fig. 2 shows section A-A in FIG. one; FIG. 3 is a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one .

A device for aeration of water contains a water supply pipeline - which passes into the external confuser 2 s.

cylindrical mixing chamber

3, ending with a diffuser 4. In an external confusor 2, an internal confuser 5 is installed coaxially, ending with a cylindrical mixing chamber 6. A suction pipe 7 of an L-shaped air intake manifold 7 is coaxially placed along the axis of the device; the surfaces of the confuser 5 and the inner surface of the confuser 2 are attached to the twisting blades 9, bent in the opposite direction with respect to the twisting blades m 8. The air intake pipe d 7 communicates with the annular cavity situated yezhdu .konfuzorami 2 and 5, the air inlet channels 10, formed in the swirl vanes x 8.

The device works as follows.

5392

By means of the interaction of the two streams, the water flow in chamber 3 is highly turbulent and high-frequency pulsations of velocities and pressures occur, contributing to more intensive fragmentation of air bubbles and their dissolution in water. 2 3.p. f-ly, 4 ill.

five

ABOUT

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Water from the pump is fed through the supply line 1 to confusors 2 and 5, divided into two streams: external and internal. The internal flow, which flows through the confuser 5, is accelerated therein by reducing the cross-sectional area of the confuser and, as it passes through the twisting blades 8, it is intensively twisted to form a vacuum cavity in the center. In the emerging vacuum cavity, air is drawn from the atmosphere through the air intake pipe 7. The swirling flow of water along with the air transported by it enters the mixing chamber 6, where the mixing of water and air takes place with the formation of a water-air mixture. The external flow of water, accelerating at the embarrassment.ore 2 and twisting by the blades 9, sucks the air from the intake pipe 7 through the channels 10. The swirled external flow of water together with the air transported by it, exits the confuser 2, into the mixing chamber 3 where it meets with a coaxially oppositely twisted internal flow coming out of the mixing chamber 6. Due to the interaction of two oppositely twisted flows in the chamber 3, the flow is highly turbulized with the occurrence of high-frequency velocity pulsations and resulting in the fragmentation of air bubbles and the intensive dissolution of air in water. In order to intensify the process of air dissolution in water, a diffuser 4 can be installed at the outlet of the mixing chamber 3, in which the velocity and pressure of the water / air mixture decrease.

Thus, the proposed device allows to intensify the process of trapping and dissolving air in water. The capture process is intensified due to the parallel ejection of air by two streams of water and the formation of a deeper vacuum as a result of the acceleration of the streams in confusors and its twisting with blades. The process of air dissolution in water is intensified due to the fragmentation of air bubbles during the interaction of two oppositely swirling flows in the mixing chamber. Making the air supply channels directly in the twisting blades allows air to be led to the annular cavity between the converters without increasing the hydraulic resistance of the device.

Claims (3)

1. A device for aerating water, containing water supply and air intake pipes and coaxially arranged external and internal confusors, to the lower end edges of which cylindrical mixing chambers are attached, characterized in that, in order to intensify the process of air capture and dissolution in water the score is crushed - fO f5 20 25 thirty air bubbles in the interaction of swirling flows, it is equipped with swirl blades installed between the air intake pipe and the internal confuser, as well as between the internal and external confusors, the power supply pipe is connected to the upper end edge of the external confuser, and the air intake pipe is placed coaxially in the inner confuser, terminates in its lower part and is provided with air supply channels with an annular cavity between the outer and inner confusors. 2, the apparatus according to claim 1, characterized in that the twisting blades mounted between confusion, bent in the opposite direction with respect to the blade m installed between the intake pipe and the internal confuser. 3. A device according to claim 1, characterized in that the air supply channels connecting the air intake pipe with an annular cavity between the external and internal confusors are made in twisting blades x installed between the air intake pipe and the internal confuser. 2. A2A. U 8 Fig.Z FIG.