Method and device for clearing rust-dirt and performing anticorrosion coating on metal pipelines

Abstract

The invention provides a method and a device for clearing rust-dirt and performing anticorrosion coating on metal pipelines. The method is characterized in that a soft-body pipeline clearing device is arranged in the ends of a pipeline; a soft-body plugging device is pushed to move by compressing air so as to push pasty sewage and a large amount of accumulated water poor in adhesion out of the pipeline; natural sand or red steel sand is blown into the pipeline by compressing the air so as to remove strong-adhesion hard rust dirt; a reinforced soft-body plastic dryer is pushed to move by compressing the air so as to dry the pipeline in cooperation with compressed-air exhaust; tangential wind and straight wind of the compressed air are blown into the pipeline, and an air gate of a fluid-state interference unit is opened; anticorrosive paint is carried by airflow to enter the fluid-state interference unit; the paint is sprayed in the fluid-state interference unit; the wall of the pipeline is evenly coated with the paint in a laminar-flow fluid state; and the paint is blown and cured. The invention has the advantages of realizing good rust-dirt clearing effects without replacing the pipeline with new pipelines in the whole course, realizing nontoxic anticorrosive coating, uniform thickness, smooth surface and good quality, prolonging the service lifespan of old pipelines, solving the problem of secondary rusting, saving a large quantity of funds, improving pipeline channels and solving the problem of the long-term poor water quality of old water-supply pipelines.

Description

technical field [0001] The invention belongs to a metal pipeline anticorrosion treatment method, in particular to a metal pipeline rust removal and anticorrosion coating method and equipment thereof. Background technique [0002] The metal pipes of tap water have been used for a long time, and the inner wall is seriously rusted. The long-term accumulation reduces the inner diameter, which obviously affects the flow rate and causes a decline in water quality, and even leaks. At present, the more effective way is to replace the new pipes. Although this can solve the problem, the amount of work is large and the construction period is long, which affects the normal domestic water consumption of users, and may cause damage to the building surface for users who are decorating, and users are unwilling to accept it. And cost more. The replaced metal pipes can only be scrapped, causing a lot of waste. For special users, chemical cleaning can be used, but the environmental pollution...

AI Technical Summary

Problems solved by technology

[0002]The metal pipes of tap water have been used for a long time, and the inner wall is seriously rusted. The long-term accumulation reduces the inner diameter, which obviously affects the flow rate and causes a decline in water quality, and even leaks appear

At present, the more effective way is to replace the new pipes. Although this can solve the problem, the amount of work is large and the construction period is long, which affects the normal domestic water consumption of users, and may cause damage to the building surface for users who are decorating, and users are unwilling to accept it. and expensive

The replaced metal pipes can only be scrapped, causing a lot of waste

For special users, chemical cleaning methods can be used, but the environmental pollution and corrosion of the inner wall of the pipe cannot be ignored, and the re-corrosion problem after the completion of the project cannot be solved

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