Film-coating device for inner wall of steel pipe

Abstract

The invention relates to a film-coating device for an inner wall of a steel pipe. The film-coating device comprises a horizontally-arranged high-frequency heating coil barrel body, wherein two bearings arranged along the axial direction of the high-frequency heating coil barrel body are arranged in the high-frequency heating coil barrel body; a powder spraying device is arranged at one end of the high-frequency heating coil barrel body; and a nozzle of the powder spraying device faces the inner cavity of the high-frequency heating coil barrel body. A steel pipe arranged in the inner cavity of the high-frequency heating coil barrel body is heated through the high-frequency heating coil barrel body, then a powder is sprayed towards the inner cavity of the steel pipe through the powder spraying device, the powder is polymer powder particles and can be adhered to the high-temperature inner wall of the steel pipe, and a layer of polymer film is formed on the inner wall of the steel pipe through continuous heating and powder spraying. A drive roll wheel is driven through a motor, then is pressed onto an outer wall of the steel pipe, and then drives the steel pipe to rotate, thus uniform peripheral distribution of the powder on the inner wall of the steel pipe is ensured. A dust absorption device can absorb redundant powder to facilitate recycling.

Description

technical field [0001] The invention relates to a coating device, in particular to a coating device for the inner wall of a steel pipe. Background technique [0002] A protective film is attached to the inner wall of the steel pipe to form anti-corrosion, anti-rust and other functions. The method of hot-adhesive adhesion of polymer materials is usually used. In the prior art, the film is directly covered, but the inner wall is narrow and the operation is inconvenient. Contents of the invention [0003] The invention overcomes the deficiencies of the prior art and provides a film coating device for the inner wall of a steel pipe with a simple structure. [0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a steel pipe inner wall coating device, including: a horizontally arranged high-frequency heating coil cylinder, and two rows of rows along its axial direction are arranged in the high-frequency heating coil cylinder....

AI Technical Summary

Problems solved by technology

The method of thermal adhesive adhesion of polymer materials is usually used. In the prior art, the film is directly covered, but the inner wall is narrow and the operation is inconvenient.

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