Spray gun spray nozzle capable of realizing minuteness atomization

Abstract

The invention provides a spray gun spray nozzle capable of realizing minuteness atomization. The spray gun spray nozzle adopts an airflow focusing operation mode and is formed by combining an air cap, a material conveyor and a valve needle, wherein a high pressure air chamber is formed between the air cap and the material conveyor, the valve needle extends into the inner wall of the material conveyor, a thin plate of the air cap is provided with material outlet holes, and the outer edge of the air cap is provided with a circle of air curtain spray openings; the rail end of a coating channel of the material conveyor is connected with a material outlet channel, and the material conveyor comprises a group of capillary tube channels; and the number of the capillary tube channels are the same as that of the material outlet holes, the capillary tube channels and the material outlet holes are in one-to-one correspondence and maintain the same central axle. According to the invention, the minuteness atomization can be realized, the spray coating quality can be improved, and the using rate of coating can be increased. The spray gun spray nozzle provided by the invention can replace the existing spray gun spray nozzle to be directly used, is simple and convenient, can be widely applied for spray coating operations in various occasions, and is particularly suitable to be used for the coating of environmental-friendly water-based paint.

Description

technical field [0001] The invention belongs to the technical field of air spraying, and in particular relates to a spray gun for outputting spray materials, in particular to a spray gun head capable of realizing fine atomization. Background technique [0002] Air spraying is one of the most widely used coating processes. It mainly uses compressed air to spray the paint from the air cap to achieve atomization. The paint flies to and adheres to the surface of the object in the form of paint mist, and finally forms a continuous coating. paint film. The equipment of the air spraying process includes the spray gun and the corresponding paint supply, compressed air supply, conveying of the coated object, control and purification of the environmental conditions of the painting operation, etc., among which the spray gun is the most important process equipment, and its technical performance affects the coating quality maximum. The spray gun is generally composed of three parts: th...

AI Technical Summary

Problems solved by technology

The limitations of these spray guns restrict the improvement of coating quality to a certain extent, and also limit the use of some advanced environmental protection coatings

However, it is difficult for the current spraying technology to achieve such a particle diameter of the paint mist. In the market, the air pressure value of the spray gun is often increased, which causes a lot of paint loss.

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