Generating method and device capable of adjusting particle size of atomized single liquid drops

Abstract

The invention discloses a generating method and device capable of adjusting particle size of atomized single liquid drops in the electrostatic atomization field. The device is characterized in that aliquid storage tank is connected to a metal capillary through a guide pipe and is in communication with the metal capillary, and a flow control valve and a flow meter are arranged on the guide pipe; adevice support comprises two square plates which are parallel to each other, and the metal capillary extends into an atomization area from the upper portion of the device support through a through hole in the upper square plate; a capillary support is tightly sleeved outside the upper section of the metal capillary, and the capillary support is connected to a high-voltage electrostatic generatorthrough a wire; and a lifting platform is arranged right below the metal capillary in the atomization area, a metal round copper plate is horizontally placed in the middle of the upper surface of thelifting platform, and the metal round copper plate is connected to the high-voltage electrostatic generator through the wire. According to the generating method and device capable of adjusting particle size of atomized single liquid drops, the action characteristic of the surface tension of the liquid is reduced through static electricity, the liquid drops are crushed into fine liquid drops, the particle size distribution of the atomized liquid drops is controlled through adjusting the voltage, the flow, the size of the polar distance and the specification of the metal capillary, and equal-particle-diameter atomized single liquid drops are generated.

Description

technical field [0001] The invention relates to the field of electrostatic atomization, in particular to a generating device and method capable of adjusting the particle diameter of atomized single liquid droplets to generate atomized single liquid droplets with equal particle diameters. Background technique [0002] The process of obtaining atomized droplets of different particle sizes by changing the voltage applied to the metal capillary is called electrostatic atomization. Atomized droplets of different particle sizes are used in different engineering fields, mainly in inkjet printing, fuel injection, coalescence and dust removal, and space propulsion. In different applications, the particle size of atomized droplets will directly affect the final use effect. [0003] The Chinese patent No. 201410236750.9 discloses a droplet generator and its working method. The liquid is formed into a droplet at the place where the droplet hangs, and the formation of the droplet is con...

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Problems solved by technology

[0003] The Chinese patent No. 201410236750.9 discloses a droplet generator and its working method. The liquid is formed into a droplet at the place where the droplet hangs, and the formation of the droplet is controlled by the inner movement rod, and the liquid is transferred by the outer movement rod. The droplet is thrown out to finally achieve the purpose of droplet formation; when the droplet generator is working, the frequency conversion governor and the controllable peristaltic pump will fail, the spring rebound will fail for a long time, and the droplet size is uncontrollable. Complex structure, difficult maintenance

The literature of Chinese Patent No. 200580031119.4 discloses a droplet generator, which mainly converts the modulation energy generated by the voltage crystal into the vibration of the nozzle, thereby generating droplets; the internal design of the droplet generator is complicated, due to the spring device Periodic reciprocating motion is generated, the spring rebound ability will be reduced for a long time, and the internal flow channel of the droplet generator is relatively narrow, which is prone to blockage during the liquid flow process, which is not conducive to the generation of droplets, and the particle size of the generated droplets cannot be adjusted. control

Chinese patent No. 201621173301.5 discloses a droplet generator and a microfluidic control system, in which a first constriction port is provided on the inner phase fluid pipe, and a second constriction port is provided on the interphase fluid pipe, and the liquid in the pipe Due to the interaction of liquids in different flow phase pipelines, droplets will be generated at the outlet of the pipeline; the main disadvantages are: uncontrollable droplet size, large number of pipelines, complicated maintenance, and different flow phase pipelines. The requirements for flow rate and specifications are relatively high, and the processing is relatively complicated, and the flow phase pipeline is prone to clogging during the droplet generation process

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