Crushing atomization method by liquid droplets impacting ultrasonic vibration wall and application

Abstract

The invention belongs to the technical field of dust removal, and discloses a crushing atomization method by liquid droplets impacting an ultrasonic vibration wall and application. Liquid is sprayed through a conical nozzle to a rapidly vibrating ultrasonic vibration block with a solid surface, and forms a layer of wavy liquid film on the solid surface; with the increase of the vibration amplitudeof solid, the vibration amplitude of surface waves of the liquid film is also increased; and when the vibration amplitude of surface waves of the liquid film is increased to a certain value, the topsof the waves can become unstable and break apart, and a lot of tiny liquid droplets of mist can be sprayed out from the solid surface. According to the ultrasonic atomization theory, the invention provides the atomization method by liquid droplets impacting the ultrasonic vibration wall. The atomization method produces vibration of different wavelengths by controlling the vibration frequency andimpacts capillary waves to promote the atomization of liquid droplets, so as to obtain a mist group with the medium particle diameter of the liquid droplets being less than 10 Mu m. The crushing atomization method adopts the mode of two times of atomization, the first atomization is produced when pressurized liquid is sprayed out by the nozzle, and the second atomization is produced when the liquid droplets impact the ultrasonic vibration wall.

Description

technical field [0001] The invention belongs to the technical field of dust removal, and in particular relates to a crushing and atomizing method and application of liquid droplets hitting an ultrasonic vibrating wall. Background technique [0002] At present, with the rapid development of fully mechanized mining and fully mechanized excavation technology, the hazards caused by dust are becoming more and more serious. Dust may lead to dust explosion accidents and pneumoconiosis. At the same time, it will also aggravate equipment wear and blockage of pipelines. Research on dust control technology based on this is imminent. Personal casualties caused by dust explosions are very serious. According to statistics, dust explosions caused more than 350 deaths and more than 900 injuries in 2010-2019. figure 1 shown. At the same time, pneumoconiosis caused by dust has a huge adverse impact on society. At present, tens of thousands of families are affected by pneumoconiosis nation...

AI Technical Summary

Problems solved by technology

In addition, it is difficult to obtain the droplet characteristics after impact atomization, and there are few research theories on multi-droplet impact.

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