Pulse electrostatic spraying device and spraying process thereof

An electrostatic spraying and pulse technology, which is applied to electrostatic spraying device, spraying device, spraying discharge device, etc., can solve the problems of inability to absorb powder coatings and poor spraying effect, and achieve the effect of high powder coating rate and good spraying effect.

Pending Publication Date: 2021-03-19
江门市博涂环保机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to non-metallic and poor conductors (re-spraying workpieces), the powder attached to the surface of the workpiece cannot effectively release the charge, and the charge accumulated on the surface of the workpiece and the charge phase of the powder coating sprayed by the powder coating injector are consistent in polarity and repel each other. Cannot effectively adsorb powder coating on the surface to be processed
Therefore, there have been technical problems in the industry for a long time that non-conductors can achieve good electrostatic spraying effects, and the spraying effect is poor.

Method used

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  • Pulse electrostatic spraying device and spraying process thereof
  • Pulse electrostatic spraying device and spraying process thereof
  • Pulse electrostatic spraying device and spraying process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A spraying process using any one of the above-mentioned pulse electrostatic spraying devices, it also includes the following steps:

[0043] 1. Pretreatment: remove oil and dust from the workpiece;

[0044] 2. Drying: the workpiece is dried after degreasing and dust removal;

[0045] 3. Adjust the parameters of the pulse electrostatic generator: the output voltage of the pulse electrostatic generator is 30KV, the output current is 60Ma, the output frequency is 3HZ, and the duty cycle is 30%;

[0046] 4. Adjust the parameters of the powder pump: the powder output of the paint is 60g / min, the atomization amount is 10L / min, and the high-pressure air inlet pressure is 0.5Mpa;

[0047] 5. Adjust the distance between the workpiece and the pulse electrostatic discharge needle: the distance between the workpiece to be sprayed and the pulse electrostatic discharge needle is 15cm;

[0048] 6. Spraying: When spraying, move the spray gun at an average speed, the speed is 0.5m / s, ...

Embodiment 2

[0051] A spraying process using any one of the above-mentioned pulse electrostatic spraying devices, it also includes the following steps:

[0052] 1. Pretreatment: remove oil and dust from the workpiece;

[0053] 2. Drying: the workpiece is dried after degreasing and dust removal;

[0054] 3. Adjust the parameters of the pulse electrostatic generator: the output voltage of the pulse electrostatic generator is 50KV, the output current is 80Ma, the output frequency is 10HZ, and the duty cycle is 40%;

[0055] 4. Adjust the parameters of the powder pump: the powder output of the paint is 110g / min, the atomization amount is 20L / min, and the high-pressure air inlet pressure is 0.7Mpa;

[0056] 5. Adjust the distance between the workpiece and the pulse electrostatic discharge needle: the distance between the workpiece to be sprayed and the pulse electrostatic discharge needle is 15cm to 40cm;

[0057] 6. Spraying: When spraying, move the spray gun at an average speed, the speed i...

Embodiment 3

[0060] A spraying process using any one of the above-mentioned pulse electrostatic spraying devices, it also includes the following steps:

[0061] 1. Pretreatment: remove oil and dust from the workpiece;

[0062] 2. Drying: the workpiece is dried after degreasing and dust removal;

[0063] 3. Adjust the parameters of the pulse electrostatic generator: the output voltage of the pulse electrostatic generator is 80KV, the output current is 100Ma, the output frequency is 20HZ, and the duty cycle is 50%;

[0064] 4. Adjust the parameters of the powder pump: the powder output of the paint is 160g / min, the atomization amount is 30L / min, and the high-pressure air inlet pressure is 0.8Mpa;

[0065] 5. Adjust the distance between the workpiece and the pulse electrostatic discharge needle: the distance between the workpiece to be sprayed and the pulse electrostatic discharge needle is 40cm;

[0066] 6. Spraying: When spraying, move the spray gun at an average speed, the speed is 2m / s,...

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PUM

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Abstract

The invention discloses a pulse electrostatic spraying device and a spraying process thereof. The pulse electrostatic spraying device comprises a gun shell and a powder pipe; the left end of the powder pipe extends into the right end of the gun shell; a coating outlet communicated with the powder pipe is formed in the front end of the gun shell, and the pulse electrostatic spraying device comprises a pulse electrostatic discharge needle and a pulse electrostatic generator; the pulse electrostatic discharge needle is arranged at the coating outlet, and the pulse electrostatic generator is electrically connected with the pulse electrostatic discharge needle; the powder coating enters from the powder pipe and is ejected from the coating outlet, and the pulse electrostatic discharge needle charges the powder coating intermittently. According to the pulse electrostatic spraying device and the spraying process thereof provided by the invention, spraying of non-metallic workpieces and poor electric conductors is achieved, and the spraying effect is good.

Description

technical field [0001] The invention relates to the technical field of electrostatic powder spraying, in particular to a pulse electrostatic spraying device and a spraying process thereof. Background technique [0002] The electrostatic powder spraying process appeared in the 1960s. With the rapid development of my country's manufacturing industry, powder spraying technology has largely replaced the original paint coating due to its good environmental performance, simple operation, and the advantages of not containing organic solvents. craft. According to the existing technology, the traditional electrostatic spraying is that the powder coating is charged by DC high-voltage equipment, and is evenly adsorbed on the surface to be processed under the action of the electric field. Due to non-metallic and poor conductors (re-spraying workpieces), the powder attached to the surface of the workpiece cannot effectively release the charge, and the charge accumulated on the surface of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B5/03B05B5/053B05D1/06B05D3/02
CPCB05B5/032B05B5/053B05D1/06B05D3/0254
Inventor 李兴华黄汉强
Owner 江门市博涂环保机电科技有限公司
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