Vortex air flotation device

Abstract

The invention discloses a vortex air flotation device, and belongs to the technical field of air flotation. The vortex air flotation device comprises a pipe barrel, the pipe barrel is communicated with a conical water gap, and two handles are symmetrically arranged at the upper end of the circumferential outer wall of the pipe barrel. A semicircular plate is arranged above the pipe barrel, and an air pump is arranged in the middle of the upper portion of the semicircular plate. A U-shaped fixing block is arranged on the upper side in the pipe barrel, and two limiting columns are symmetrically and fixedly arranged in the middle of the outer side in the U-shaped fixing block. A mechanical box is arranged at the outer end of the upper part of the U-shaped fixing block, a motor is fixed in the mechanical box through a screw, and the output end of the motor penetrates through the outer wall of the U-shaped fixing block, extends into the U-shaped fixing block and is sleeved with a gear A. Through close fit of the structures, the device moves up and down to perform air flotation treatment on wastewater. Meanwhile, the internal wastewater can be stirred through revolution to break bubbles. The problems that bubbles generated by many air flotation devices used at present are large in diameter and small in number, the contact time of the bubbles and suspended solids is short, and the air flotation effect is poor are effectively solved.

Description

technical field [0001] The invention relates to the technical field of air flotation, and more specifically, relates to a vortex air flotation device. Background technique [0002] Air flotation is a long-established high-efficiency solid-liquid separation technology. It is mainly used to remove suspended impurities that have a density similar to that of water and cannot be naturally settled and are difficult to float naturally. It has the advantages of high separation efficiency and simple equipment, and is widely used in the field of water treatment. The air flotation treatment method is to pass air into the wastewater, and precipitate from the water in the form of tiny bubbles to become a carrier, so that the emulsified oil, tiny suspended particles and other pollutants in the wastewater adhere to the bubbles and float to the water surface together with the bubbles. Form a three-phase mixture of foam-air, water, and particles (oil), and achieve the purpose of separating i...

AI Technical Summary

Problems solved by technology

The flotation method is mainly used to treat emulsified oil or tiny suspended particles with a relative density close to 1 that is difficult to remove by natural sedimentation or flotation in wastewater. Many air flotation devices currently in use produce larger diameter bubbles and fewer bubbles. The contact time of suspended solids is short, and the treatment effect is not good;

[0003] In the existing vortex air flotation device, for example, in CN101898808A, a plurality of horizontally and vertically alternated gas injection pipes are set to realize the injection of bubbles, but because the injection position is relatively fixed, it is impossible to traverse and absorb randomly distributed suspended substances in the liquid. In some other vortex air flotation devices, such as CN202214232U, the bubbles generated are subjected to high-speed rotary cutting to generate microbubbles, thereby increasing the number of bubbles, but the suspension position inside the liquid is still not completely covered, so that the suspension effect is not good, and the bubbles are blocked. The impurities brought by the fusion to the surface of the water are also easily attached to the inner wall of the container, making the collection of impurities difficult.

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