Ultrasonic-pneumatic nozzle

Abstract

The invention discloses an ultrasonic-pneumatic nozzle which comprises a spray rod with a tiny liquid flow channel processed in the axis, an ultrasonic generator and a nozzle air tap. A support device is arranged in the middle of the spray rod, the ultrasonic generator is mounted on the support device, the nozzle air tap surrounds the end of the spray rod to form the nozzle, the ultrasonic generator is provided with a piezoelectric wafer, a backseat and a lead, the lead is connected to the piezoelectric wafer, the backseat is located at one end of the piezoelectric wafer and is in contact with the fastening device, the piezoelectric wafer is provided with a piezoelectric ceramic plate and electrode plates, the electrode plates are respectively plated on the front and back sides of the piezoelectric ceramic plate by adopting metallic silver as a conducting material, short pulse of voltage acts on two poles of the piezoelectric wafer through the lead after energization, and due to back voltage effect, the piezoelectric wafer elastically deforms so as to generate elastic oscillation. The nozzle is simple in structure, convenient to operate, safe and reliable, adjustable in spray flux and distance and the like, and is of great significance to spray effect improvement and reduction of chemical waste.

Description

technical field [0001] The invention relates to an ultrasonic-pneumatic spray head, in particular to a device for increasing the atomization degree of droplets, improving the absorption of crop medicine and nutrients, reducing medicine waste, and improving the spraying effect, which belongs to the supporting equipment for plant protection equipment used in agriculture and forestry device. Background technique [0002] The essence of mechanical spraying technology is to increase the rate of pesticide deposition on the target (i.e. target), reduce or eliminate its deposition in non-target objects or areas, and adopt reasonable technical methods to reduce the amount of pesticide application. To the minimum value, so as to maximize the effective utilization of pesticides, while eliminating the hazards of pesticides to operators and the risk of pollution to the environment. Low-volume, low-pollution spray technology is an urgent problem to be solved in the field of pesticide app...

AI Technical Summary

Problems solved by technology

At present, the domestic mechanical pesticide application technology has been hovering at a low level, which is difficult to meet the needs of the market. The effective utilization rate of drugs is low, a large number of drugs drift and lose, and the environmental pollution is serious, causing drug residues in agricultural and forestry products to exceed the standard, which seriously threatens people's health.

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