Composite venturi type micro-bubble generating device

Abstract

The invention provides a composite venturi type micro-bubble generating device. The device comprises a first-stage venturi channel and a second-stage venturi channel, wherein after bubbles are crushedin a rotational flow area of the first-stage venturi channel, the bubbles are further crushed by utilizing a rotational flow area of the second-stage venturi channel. According to the composite venturi type micro-bubble generating device, additional auxiliary power facilities are not needed, a large number of micro-bubbles with diameters of about 100 micrometers can be prepared through the second-stage rotational flow area of the second-stage venturi channel under low energy consumption by means of kinetic energy of liquid in the venturi channels, and operation cost is low. Besides, the venturi channels of the composite venturi type micro-bubble generating device does not contain any moving part, so the composite venturi type micro-bubble generating device is convenient and safe to operate and maintain in the using process and not prone to breaking down; and the device is simple in manufacturing process, low in manufacturing cost, extremely high in safety and reliability, and economical and practical to use.

Description

technical field [0001] The present application relates to the technical field of micro-bubbles, in particular to a composite Venturi type micro-bubble generating device. Background technique [0002] Microbubbles generally refer to bubbles with a size of less than 100 microns. They have the characteristics of large surface area, long residence time in water, and high mass transfer efficiency. They have great application prospects in many fields such as chemical industry, environment, biomedicine, and nuclear energy. [0003] Venturi tube is a commonly used structure in industrial production. It is widely used in many aspects such as flow measurement and dust removal. Venturi flowmeter and cleaner are relatively mature technologies in industry. However, when the Venturi tube is applied to a bubble generating device, how to efficiently prepare a large number of small-sized bubbles is a core technical issue in engineering applications. In practical applications, the bubble siz...

AI Technical Summary

Problems solved by technology

[0005] Among them, the bubbles produced by the traditional Venturi-type bubble generator are generally millimeter-sized, and the formed bubbles are too large to reach the micron level, and there is a problem of low efficiency in application.

The pressurized Venturi bubble generator can produce bubbles with a diameter of tens of microns, but the pressurized dissolved air bubble generator must use an additional compressor, which consumes a lot of energy

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