Venturi-type bubble generation device with multiple Venturi structures

Abstract

The invention discloses a Venturi-type bubble generation device with multiple Venturi structures in parallel connection. The bubble generation device comprises a gas inlet passage, a shell, ribbed plates, an internal core and the like. An inner Venturi passage comprises the shell and the coaxially mounted internal core, 16 division ribbed plates are radially mounted in the passage and circumferentially and uniformly arranged, and the single Venturi passage is divided into 16 independent Venturi structure units. Liquid enters the shell from a shell inlet, and gas enters throats of the Venturi structure units through an annular gas cavity, radial passages in the ribbed plates and a gas outlet close to the core, enters a divergent section along with high-speed water flow along the surface ofthe core and finally is fragmented into tiny bubbles under the action of strong turbulent flow in a backflow region of the divergent section. A whole flowing space is divided into 16 independent Venturi-type bubble generators, the Venturi-type bubble generators can parallelly and efficiently run, and the gas injected near the surface of the core flows out from the throats, cannot be brought into amain flow region, rapidly enters a near-wall strong turbulent flow region of the divergent section and is fragmented. In addition, the multiple Venturi structure units are designed in parallel connection, so that the Venturi-type bubble generation device has the advantages of compact structures, simplicity in mounting, pressure resistance, convenience in decontamination and the like, and safe andefficient operation of the device can be ensured.

Description

technical field [0001] The invention relates to a bubble generating device suitable for preparing a large number of tiny bubbles. technical background [0002] Microbubbles have the characteristics of large specific surface area, slow rising speed (longer residence time in liquid), strong surface adsorption and strong permeability, etc., which can greatly enhance the heat and mass transfer process, so they are used in many engineering, agriculture, medicine It has a wide range of applications in fields such as sewage treatment, mineral flotation, drug delivery, aquaculture, soilless cultivation, molten salt stack degassing system, ship drag reduction and microbubble bathing, etc. [0003] The Venturi channel has the advantages of structural order, safety and reliability, and low energy consumption. Therefore, the Venturi effect generated by it is often used to design devices such as flow meters, scrubbers, nozzles, and bubble generators. [0004] In practical applications, ...

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Problems solved by technology

[0004] In practical applications, the bubble size is an important evaluation parameter of the bubble generating device. How to prepare a large number of small-sized bubbles is the core technical problem in practical engineering applications. However, the traditional single-channel Venturi bubble generator has limited ability to produce bubbles.

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