Venturi-type bubble generating device with multi-venturi structure

Abstract

The invention discloses a Venturi type air bubble generating device in which multiple Venturi structural units are connected in parallel. The air bubble generating device is composed of an air inlet passage, a shell, a rib plate, a built-in core and the like. Among them, the inner Venturi channel is composed of a shell and a coaxially installed built-in core, 16 split ribs are installed in the channel radially, and are evenly arranged in the circumferential direction, dividing a single Venturi channel into 16 individual Venturis structural unit. The liquid enters from the inlet of the shell, and the gas enters the throat of each Venturi structural unit through the annular air cavity, the radial channel in the rib plate and the gas outlet near the core, and enters along the surface of the core with the high-speed water flow In the gradual expansion section, it is finally fragmented into tiny bubbles under the action of strong turbulence in the recirculation zone of the gradual expansion section. The ribs divide the entire flow space into 16 independent Venturi bubble generators, realizing the parallel connection and high-efficiency operation of multiple Venturi bubble generators; the gas injected close to the surface of the core will not be brought in after flowing out of the throat Instead, it quickly enters the strong turbulent area near the wall of the gradual expansion section for fragmentation; in addition, the multi-Venturi structure unit of the present invention is designed in parallel, which has the advantages of compact structure, simple installation, pressure resistance, and easy cleaning, etc., which can ensure the safety of the device. Work safely and efficiently.

Description

technical field [0001] The invention relates to a bubble generating device suitable for preparing a large number of tiny bubbles. [0002] technical background [0003] 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. [0004] 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. [0005] In practical applic...

AI Technical Summary

Problems solved by technology

[0005] 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.

Images