Low-pressure driven shift shaft Vickers curve type low-frequency ultrasonic three-time atomization spray head

Abstract

The invention provides a low-pressure driven shift shaft Vickers curve type low-frequency ultrasonic three-time atomization spray head. The whole vibration direction of the spray head is the axial vibration direction. An ultrasonic amplitude transformer is a shift shaft Vickers curve type composite amplitude transformer. Four piezoelectric ceramics are sequentially connected from left to right through fastening bolts and divided into upper and lower eight piezoelectric ceramic half wafers, the eight piezoelectric ceramic half wafers achieve composite bending and vibration of the piezoelectric ceramics through axial polarization, and therefore fog drips are finer. According to the working principle of the low-frequency ultrasonic three-time atomization spray head, a nutrient solution enters the ultrasonic atomization spray head from a solution inlet in the shift shaft Vickers curve type amplitude transformer and flows out from a solution outlet, first-time atomization is completed on the right end face of the solution outlet, second-time atomization is completed through the effect of wing power of a fan, and third-time atomization is completed through laser space time on a metal sheet. The defect that the low-frequency ultrasonic atomization cannot easily complete ultra-fine fog drips is overcome, and the low-pressure driven shift shaft Vickers curve type low-frequency ultrasonic three-time atomization spray head can be used in the fields of atomization cultivation, ultrasonic spraying and the like.

Description

technical field [0001] The invention relates to the technical field of agricultural equipment, and belongs to the field of atomized cultivation, in particular to a low-frequency ultrasonic triple-atomized spray nozzle driven by a low-pressure axis-shifting Vickers curve. Background technique [0002] Ultrasonic nebulizer has a wide application prospect in the field of agricultural engineering due to its advantages of fine and uniform droplet size. Ultrasonic atomization refers to the use of high-frequency electronic oscillation, through the high-frequency resonance of the ceramic atomization sheet, to break up the molecular structure of liquid water to produce natural and elegant water mist, without heating or adding any chemical reagents. At present, the main shapes of the horn of the ultrasonic atomizing nozzle are conical, Bezier and stepped. The conical horn has a simple structure and is easy to design and manufacture, but its magnification factor is low; the stepped ho...

AI Technical Summary

Problems solved by technology

The ultrasonic transducer converts the high-frequency oscillating electrical signal into ultrasonic mechanical vibration, and the horn amplifies the amplitude of the sound wave generated by the ultrasonic transducer, creating a cavitation effect at the atomizing surface in front of the nozzle, atomizing the liquid, and at the same time A focused sound field is generated to suspend the steel ball, and the generated mist collides with the suspended ball to produce fine mist. This ultrasonic nozzle can only produce secondary atomization

Moreover, at this stage, most of the nozzles have small spray angles, the atomized droplets are too concentrated, and the spraying efficiency is low, which is not suitable for agricultural cultivation and ultrasonic spraying.

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