Electrostatic spraying device for inner walls of guardrails made of zinc-steel pipes

Abstract

The invention discloses an electrostatic spraying device for inner walls of guardrails made of zinc-steel pipes. The electrostatic spraying device comprises a liquid conveying pipe, a uniform smearingbox, an adjusting pipe and an ash receiving box; a spraying head is fixedly connected to the upper end of the liquid conveying pipe; a liquid collecting groove is formed in the bottom surface of thespraying head and communicates with an opening of the liquid conveying pipe; a spraying opening is formed in the outer wall of the spraying head and communicates with the liquid collecting groove; theuniform smearing box is fixedly connected to the upper end of the liquid collecting groove; a telescopic groove is formed in the side wall of the uniform smearing box; a smearing plate is inserted inside the telescopic groove; a compressed spring is fixedly connected between the smearing plate and the telescopic groove; and a coaming is fixedly connected to the bottom surface of the spraying head. The electrostatic spraying device for the inner walls of the guardrails made of the zinc-steel pipes is inserted into pipe bodies, the liquid conveying pipe is rotated when the pipe bodies are sprayed and the liquid conveying pipe is drawn out gradually, the smearing plate on the side wall of the uniform smearing box is ejected by the compressed spring and makes contact with the inner walls of the pipe bodies, and sprayed paint is smeared uniformly.

Description

technical field [0001] The invention relates to the technical field of pipe material processing, in particular to an inner wall electrostatic spraying device for zinc steel pipe guardrails. Background technique [0002] The guardrail fence is often made of welded zinc steel pipes, and the surface of the zinc steel pipes is painted. In order to prevent the fences welded by the zinc steel pipes from being corroded, it is necessary to spray paint on the surface of the zinc steel pipes to prolong the service life of the guardrails; [0003] In the prior art, usually when spraying zinc steel pipes, the paint is sprayed with a hand-held paint spray gun. For zinc steel pipes with larger diameters and shorter pipes, the gun head can only be extended into the interior to spray paint, and the internal conditions cannot be observed, which is easy The paint is uneven. When processing long zinc steel thin pipes or zinc steel long pipes, the paint spray gun can only paint the outside of t...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, usually when spraying zinc steel pipes, the paint is sprayed with a hand-held paint spray gun. For zinc steel pipes with larger diameters and shorter pipes, the gun head can only be extended into the interior to spray paint, and the internal conditions cannot be observed, which is easy The paint is uneven. When processing long zinc steel thin pipes or zinc steel long pipes, the paint spray gun can only paint the outside of the zinc steel pipe, but the inside cannot be painted; The burrs affect the quality of pipe wall spraying;

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