Vibration derusting process for inner surface of pipeline and device therefor

Abstract

The invention relates to a vibration derusting process for piping internal surface and a device therefore, comprising a chassis, a DC speed-changeable motor, a transverse work table, and a longitudinal work table, characterized in that the device also comprises a transverse vibration cylinder, a assisted motor, a vibration spring, a eccentric cam, and a dedicated clamp. The process comprises filling the high rigid abrasive grain into the pipe to be processed, and fixing the pipe on above work table by dedicated clamp; switching on the power supply, adjusting the rotation speed of DC speed-changeable motor, the pressure of vibration cylinder, and the length of vibration spring to control the vibration frequency and the vibration amplitude to be up to the set value; starting the switch, realizing the vibration derusting, wherein the pipe rotates round its shaft and does complex vibration along with the work table, the abrasive grain in pipe generates inertial impact force and impacts the piping internal surface. The vibration derusting process is provided with good social benefit and economic benefit, and the device can be suitable for all kinds of pipes, especially for small-diameter long piping.

Description

technical field [0001] The invention relates to a special method and equipment for cleaning the inner surface of a pipeline, in particular to a vibration derusting process and a device for the inner surface of a pipeline. Background technique [0002] Industrial and civil liquids and gases are mainly transported by metal pipelines. Due to the corrosiveness of liquids and gases, the inner walls of the pipelines are corroded, which is easy to cause leakage pollution hazards, and at the same time pollute the transported liquids. Therefore, the inner surface of the pipeline must be treated with anticorrosion. The effect of anti-corrosion treatment is closely related to the quality of the pre-treatment process on the inner surface of the pipeline. The pre-treatment process requires the removal of rust spots, oil stains, oxide layers, etc. on the inner surface of the pipeline. At present, the industrial anti-corrosion pre-treatment process for the inner surface of the pipeline m...

AI Technical Summary

Problems solved by technology

At present, the industrial anti-corrosion pre-treatment process for the inner surface of the pipeline mainly includes: ① pickling treatment (on-line cleaning or dismantling and cleaning): use the principle of chemical reaction between acid and oxide layer and rust, rinse with clean water, the cost is high, and rust removal The quality is unstable, the production environment is harsh, and it is harmful to the health of the operators. At the same time, the surface roughness required for coating the anti-corrosion protective layer cannot be formed after rust removal, which affects the coating quality. The waste liquid produced seriously pollutes the environment. Washing waste liquid causes industrial equipment and environmental pollution, and wastes water resources; ②Mechanical cleaning: use the cutting force generated by the metal long axis to drive the grinding wheel to treat the oxide layer and rust. It is mainly suitable for the inner surface of large-diameter pipes, and the treatment effect on slender pipes Influenced by the stiffness of the long axis, the effect is unsatisfactory; ③Sand blasting treatment: use high-pressure gas to carry high-hardness abrasive particles to impact the oxide layer and rust on the inner surface of the pipe, resulting in dust pollution, and the treatment effect on slender pipe fittings is not ideal

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