Ultrasonic stepping superfine single droplet generator

Abstract

The invention provides an ultrasonic stepping superfine single droplet generator. A one-way valve is composed of a valve body, a valve core and a spring, the valve body is connected with a nozzle through a guide pipe, and the guide pipe is driven to do linear motion by utilizing an inverse piezoelectric effect of piezoelectric ceramics through an ultrasonic direct-current motor composed of the piezoelectric ceramics. And liquid in a spraying cavity is extruded out of the nozzle by utilizing the nanoscale feeding amount of an ultrasonic linear motor, so that tiny and quantitative liquid drops are obtained. Due to the fact that the piezoelectric vibrator drives the guide pipe to generate the nanoscale feeding amount, the volume of liquid drops overflowing each time can reach the micron scale, and the requirement for generating tiny liquid drops is met.

Description

technical field [0001] The invention relates to an ultrasonic step ultrafine single droplet generator, which belongs to the field of agricultural engineering. Background technique [0002] In agricultural engineering disciplines, tiny single droplets are very important for the quantitative analysis of crop nutrient uptake. At present, microfluidic chips are mainly used in the field of microfluidics. Most of these chips cannot be mass-produced due to the extremely high processing precision requirements, resulting in high processing costs. Another technology that produces tiny liquids is applied to inkjet printers, usually using thermal foaming technology or piezoelectric technology. Most of these solutions are complex and inaccurate, and require complex control systems. [0003] At present, the equipment for producing tiny single droplets generally has the problems of low precision, complex structure and high cost. Contents of the invention [0004] Aiming at the deficie...

AI Technical Summary

Problems solved by technology

Most of these chips require high processing precision, which leads to high processing costs and cannot be mass-produced.

Another technology that produces tiny liquids is applied to inkjet printers, usually using thermal foaming technology or piezoelectric technology, most of these solutions are complex and inaccurate, and require complex control systems

[0003] At present, the equipment for producing tiny single droplets generally has the problems of low precision, complex structure and high cost.

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