Epoxy powder internal spraying device

Abstract

The invention relates to an epoxy powder internal spraying device. The epoxy powder internal spraying device comprises a storage hopper, a spiral material conveying rod, a temporary storage box, a venturi valve and a material nozzle, wherein the temporary storage box is arranged in front of the spiral material conveying rod, a compressed gas vent pipe is connected to the bottom of the temporary storage box, filter fiber cotton is arranged at the bottom in the temporary storage box, a material conveying pipe with a downward opening is arranged at the top of the temporary storage box, the venturi valve is connected to the material conveying pipe outside the temporary storage box, a gas introduction front pipe and a gas introduction rear pipe are connected to the throat part of the venturi valve, and the material nozzle is connected to the end part of a material discharging pipe. According to the epoxy powder internal spraying device, a spraying anti-corrosion process for the inner surface of a steep pipe can be achieved, and the spraying anti-corrosion treatment for the outer surface and the inner surface of the steel pipe can be achieved simultaneously.

Description

technical field [0001] The invention belongs to the technical field of spraying devices, in particular to an epoxy powder internal spraying device. Background technique [0002] The inner surface of the steel pipe wall is subjected to anti-corrosion treatment. Due to the long length of the steel pipe, the spraying equipment cannot extend into the inside of the pipe. If the spraying device lengthens the spray pipe, the spray pressure at the nozzle is not strong enough, and the spraying effect is not good. Therefore, for the anti-corrosion treatment of the inner wall of the long pipe, the rolling coating method is usually used, and the spraying method cannot be used. The outer surface of the steel pipe is usually sprayed for anti-corrosion, and the outer and inner surfaces of the steel pipe are separately used for two sets of anti-corrosion methods. The spraying process is different, and the spraying is a waste of time and energy. Contents of the invention [0003] The pur...

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Problems solved by technology

[0002] The inner surface of the steel pipe wall is subjected to anti-corrosion treatment. Due to the long length of the steel pipe, the spraying equipment cannot extend into the inside of the pipe.

If the spraying device lengthens the spray pipe, the spray pressure at the nozzle is not strong enough, and the spraying effect is not good

Therefore, for the anti-corrosion treatment of the inner wall of the long pipe, the method of rolling coating is usually used, and the method of spraying cannot be used

The outer surface of the steel pipe is usually sprayed for corrosion protection, and the outer surface and inner surface of the steel pipe are separately treated with two sets of anti-corrosion methods. The spraying process is different, and the spraying is a waste of time and energy.

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