Piezoelectric ceramic coating head

Abstract

The invention relates to a piezoelectric ceramic coating head which comprises a shell, a liquid flow channel, piezoelectric ceramics, a drainage gas flow channel, a transduction head and a cable, wherein the liquid flow channel is arranged on the top of the shell; the piezoelectric ceramics is positioned in the shell; the transduction head is installed at the bottom of the shell; the cable is arranged on the top of the shell; the drainage gas flow channel is positioned on the top of the shell; the drainage gas is led in from the top, flows through the surface of the piezoelectric ceramics andis sprayed outside from the transduction head in an atomized way; and heat dissipation is carried out on the surface of the piezoelectric ceramics when in drainage. Compared with the prior art, the piezoelectric ceramic coating head has the advantages of being even in spraying and high in product quality, ensuring the flow channel not to be easily blocked, and the like.

Description

technical field [0001] The invention relates to an ultrasonic device, in particular to a piezoelectric ceramic coating head. Background technique [0002] The ultrasonic atomizing nozzle uses piezoelectric ceramics to receive external circuit oscillating signals, and converts electrical energy into mechanical oscillations, so that the fluid medium is dispersed and atomized below 100 μm (some even below 30 μm, depending on the density of the liquid medium, liquid-solid ratio, liquid Viscosity, piezoelectric ceramic resonant power and other factors are different) liquid droplets, while spraying the device under the action of the minimum gas drainage. [0003] Ultrasonic atomizing nozzles are widely used in various industries because of their small size, controllable power, and fine atomized droplets, especially in the emerging battery manufacturing industries that require fine flat coating (such as fuel cells, catalytic Layer coating, leveling diffusion layer coating, etc. Li...

AI Technical Summary

Problems solved by technology

[0004] Ultrasonic atomizing nozzles currently available on the market, such as figure 1 , the drainage gas flow channel 3 is set on the side of the nozzle, because the drainage gas enters sideways, it can only play the role of drainage, while the piezoelectric ceramic 2 is inside the nozzle shell, and the liquid flow channel 1 and the cable 5 are set on the top of the nozzle. The energy head 4 is set at the bottom. When high-power operation is required (low liquid-solid ratio, high viscosity), the large amount of heat generated cannot be dissipated in time, causing the temperature of the liquid channel to rise, thereby evaporating the solvent in the liquid medium, and the liquid-solid The lower the ratio and the higher the viscosity, it is easy to cause blockage in the flow channel, which makes the spraying uneven and affects the uneven quality of the produced products.

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