Lawrence electron accelerator type electrostatic spray gun

Abstract

The invention discloses a Lawrence electron accelerator type electrostatic spray gun, which comprises a coating container, an electrostatic generator, a gun barrel and a switch, wherein a solenoid valve and the electrostatic generator are connected in series below the coating container by a feed pipe and are connected with an electron accelerator; the electron accelerator is in a horizontal circular box shape; upper and lower end faces of the electron accelerator comprise a pair of opposite magnetic poles which can form a uniform magnetic field inside the accelerator; the inside of the electron accelerator comprises two metal net plates which are parallel mutually and parallel to the uniform magnetic field; the two metal net plates are arranged on two sides of the diameter of the electron accelerator; the feed pipe extends between the two metal net plates from the outside of the electron accelerator; the metal net plates are connected with a high-voltage alternating power supply; an inlet of the gun barrel is communicated with the inner part of the electron accelerator from the periphery of the electron accelerator; and the switch controls the turning-on and turning-off of the alternating power supply and the solenoid valve. By the electrostatic spray gun, noise-free spraying can be realized, the divergence of coating granules is high, and the spraying uniformity also can be improved further.

Description

Technical field [0001] The invention relates to a metal coating tool, in particular to an electrostatic spray gun that uses the principle of electrostatic spraying to realize paint powder spraying. Background technique [0002] For metal components, in most cases, the surface of the metal component needs to be painted to make the surface of the metal component have good anti-corrosion performance and make it more tidy and beautiful. For this reason, simple manual spraying or electrostatic spraying is usually used. When simple manual spraying is used, because the ordinary spray gun sprays liquid paint, it is easy to cause uneven paint flow on the surface of the workpiece, and eventually cause the coating to be everywhere. The result of uneven thickness is poor coating quality. [0003] In view of the above reasons, in the current high-demand metal coating process, it is required to use electrostatic spraying method for coating, that is, the electrostatic spray gun is used to spray ...

AI Technical Summary

Problems solved by technology

For this reason, simple manual spraying or electrostatic spraying is usually used. When simple manual spraying is used, since the ordinary spray gun sprays liquid paint, it is easy to cause uneven paint flow on the surface of the workpiece, and eventually cause the coating to spread everywhere. Poor coating quality due to uneven thickness

[0003] In view of the above reasons, in the current high-demand metal coating process, electrostatic spraying is required for coating, that is, electrostatic spray guns are used to spray powdery charged paint particles to charged workpieces, so that the paint particles are evenly adsorbed on the workpiece surface, and then through high-temperature melting, leveling, and curing processes, the paint is evenly coated on the surface of the workpiece; the principle is: the electrostatic spray gun is connected to one pole of the power supply, and the workpiece is connected to the other pole of the power supply. The inside is blown out by the compressor, and after being charged by the electrostatic generator (composed of electrostatic needles or electrostatic disks) at the muzzle, it is evenly absorbed by the workpiece; in this kind of electrostatic spray gun, the main problem is that the noise of the compressor is relatively high. Large, and the directionality of the compressed air is relatively concentrated, and the divergence of the paint particles sprayed from the spray gun is weak, so that the uniformity of spraying is still limited to a certain extent

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