Secondary gas-liquid two-phase flow electrostatic nozzle

Abstract

The invention relates to a secondary gas-liquid two-phase flow electrostatic nozzle and belongs to the technical field of atomizing nozzles. The nozzle comprises a support and a nozzle cap. The support is composed of a liquid conveying pipe and a ring connected with the liquid conveying pipe through webs. The nozzle cap is composed of a cap pipe and a spray pipe connected with the cap pipe through a contraction cone. A spiral nozzle body is fixed into the nozzle cap through a locking frame and composed of a central pipe, a wind stopping plate, a set of frontward spiral blades and ventilating holes. The inner end of the central pipe is inserted into the liquid conveying pipe. An atomizing nozzle body is inserted and fixed into the outer end of the central pipe. The outer end of the atomizing nozzle body stretches into the spray pipe. The contraction cone of the nozzle cap is provided with an air outlet and movably sleeved with an adjusting air valve, and the adjusting air valve is used for adjusting the size of the air outlet. The ultra-low atomization capacity and ultra-thin sprayed drops are achieved in a secondary gas-liquid two-phase current atomization mode, and the sprayed mist penetrating power is higher; and meanwhile, the atomization amount and the sprayed drop particle diameter are steplessly controlled, and the demand for preventing and controlling different disease and pest damage can be met practically.

Description

technical field [0001] The invention relates to an atomizing nozzle, in particular to an ultra-low-capacity secondary gas-liquid two-phase flow electrostatic nozzle, which belongs to the technical field of spray nozzles. Background technique [0002] Electrostatic spraying charges the pesticide droplets through different methods such as contact, corona, and induction, and moves towards the target crop or target organism under the action of the electric field force, so as to realize the efficient transfer and deposition of the pesticide droplets to the target. In particular, the "outflanking effect" of charged droplets helps to increase the deposition rate and coverage of pesticide droplets on hidden parts such as the back of crop leaves, thereby improving the effectiveness of pest control and the effective utilization of pesticides. [0003] The charge-to-mass ratio of droplets is a key factor affecting the effect of electrostatic spraying, which reflects the electricity per...

AI Technical Summary

Problems solved by technology

Because hydraulic atomization has the disadvantage of wide droplet spectrum (that is, the thickness of the droplet is uneven, the large droplet is easy to lose, and the small droplet is easy to drift away, thereby reducing the effective utilization rate of pesticides and causing environmental pollution), and The size of the median particle size of the droplet volume mainly depends on the model of the fan-shaped fog nozzle selected. Therefore, when the model of the fan-shaped fog nozzle is selected, the median particle size of the droplet volume formed by atomization is relatively fixed, and it cannot be determined according to the control object. vary according to different requirements

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