Polishing equipment suitable for steel pipes of different pipe diameters

Abstract

The invention belongs to the technical field of steel pipe polishing equipment, and particularly relates to polishing equipment suitable for steel pipes of different pipe diameters. The polishing equipment comprises a rack, an outer cylinder, an inner cylinder and a pipe body, wherein the inner side of the rack is fixedly connected to the outer cylinder; through holes are formed in the top and bottom of the rack; the top end of the outer cylinder is fixedly connected to the inner cylinder; the outer cylinder is used for storing gravels; a polishing module is arranged at the bottom of the outercylinder and comprises a polishing ring No. 1, a polishing ring No. 2, a polishing ring No. 3, a polishing ring No. 4, a curved gear No. 1 and a curved gear No. 2; the polishing ring No. 1, the polishing ring No. 2, the polishing ring No. 3 and the polishing ring No. 4 are arranged from top to bottom in sequence; the inner diameters of a through hole No. 1, a through hole No. 2, a through hole No. 3 and a through hole No. 4 are decreased in sequence; and the through hole No. 1, the through hole No. 2, the through hole No. 3 and the through hole No. 4 are used cooperatively for the fine polishing of pipe bodies of different pipe diameters. The polishing equipment can effectively improve the polishing quality of the pipe body and reduces the clearing workload of the later period.

Description

technical field [0001] The invention belongs to the technical field of steel pipe grinding equipment, in particular to a steel pipe grinding equipment suitable for different pipe diameters. Background technique [0002] Rust and oxide scales on the steel pipe surface will affect the adhesion between the paint film and the steel pipe surface, and will reduce the fatigue strength and corrosion resistance of the steel pipe. Therefore, steel pipe manufacturers must carry out derusting treatment on the surface of steel pipes before painting. Since the steel pipe is exposed to the natural environment for a long time and is affected by the sun and rain, the coating on the steel pipe is easy to age and cause the steel pipe to rust, which affects the service life of the steel pipe and thus creates a safety hazard. Therefore, it is necessary to regularly check the rust on the surface of the steel pipe. Remove traces, oxide scales, and aged coatings, polish them, and then repaint them...

AI Technical Summary

Problems solved by technology

Since the steel pipe is exposed to the natural environment for a long time and is affected by the sun and rain, the coating on the steel pipe is easy to age and cause the steel pipe to rust, which affects the service life of the steel pipe and thus creates a safety hazard. Therefore, it is necessary to regularly check the rust on the surface of the steel pipe. Remove traces, oxide scales, and aging coatings, polish them, and then repaint them to prolong the service life of steel pipes

[0003] However, most of the existing steel pipe grinding equipment uses grinding wheels, sandpaper polishing sheets or steel wire discs to grind the steel pipes. When the grinding sheets are in contact with the steel pipes, they are in line contact or the contact surface is very small, the grinding efficiency is not high, and the grinding is uneven. Secondary grinding, otherwise there will be problems of poor rust removal quality or uneven wall thickness of the steel pipe, shortening the service life of the steel pipe

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