Automatic pickling equipment suitable for inner wall of steel pipe

Abstract

The invention discloses automatic pickling equipment suitable for an inner wall of a steel pipe, and relates to the technical field of steel pipe pickling, the automatic pickling equipment comprises a feeding guide mechanism, a stepping conveying mechanism, a solution circulating mechanism and a discharging mechanism; the feeding guide mechanism is located on the front portion of a pickling support, the discharging mechanism is located on the rear portion of the pickling support, the solution circulating mechanisms are located on the two sides of the pickling support, and the stepping conveying mechanism is arranged on the pickling support and used for conveying acid treatment steel pipes. The automatic pickling equipment for the inner wall of the steel pipe is suitable for pickling, washing and electroplating the inner wall of the steel pipe with various diameters and other treatment on the inner wall of the steel pipe, the universality is high, the production efficiency is high, the labor cost is saved, used liquid is returned after being filtered, solution pollution is avoided, the use efficiency of the solution is improved, and the treatment quality is consistent and reliable; a solution circulates in a sealed environment among a liquid storage tank, a pipeline and a steel pipe, is free of volatilization and air pollution, is beneficial to environmental protection, reduces volatilization and improves the utilization rate of the solution.

Description

technical field [0001] The invention relates to the technical field of pickling of steel pipes, in particular to an automatic pickling equipment suitable for the inner wall of steel pipes. Background technique [0002] Pickling passivation is mainly to form a passivation film on the metal surface through pickling to enhance the surface corrosion resistance. The main pickling method of existing steel pipes is immersion and internal circulation after the two ends of the finished steel pipe are connected with connectors; in the immersion pickling method, the degree of pickling inside and outside the steel pipe is inconsistent, which easily leads to over-pickling of the outer surface, and the solution Exposure to the air is likely to cause environmental pollution and affect the health of operators. The pickling method after the steel pipe is made into a finished product has the following defects: the two ends of the steel pipe need to be connected with their own connectors, oth...

AI Technical Summary

Problems solved by technology

The main pickling method of existing steel pipes is immersion and internal circulation after the two ends of the finished steel pipe are connected with connectors; in the immersion pickling method, the degree of pickling inside and outside the steel pipe is inconsistent, which easily leads to over-pickling of the outer surface, and the solution Exposure to the air is likely to cause environmental pollution and affect the health of operators

The pickling method after the steel pipe is made into a finished product has the following defects: the two ends of the steel pipe need to be connected with their own connectors, otherwise the pickling cannot be connected. Generally, threads, ferrules, flanges, unions, etc. are used to connect. The connection process is complicated and the whole process is manual. Low operating efficiency, unable to realize automatic production, suitable for finished parts with connectors at both ends

[0003] The published patent document "Circular pickling device and method for carbon steel pipeline" (application number: CN201711388071.3) provides a device for pickling pipelines, but when in use, it is necessary to manually connect the pipelines, and at the same time, the transportation and location of the pipelines The adjustment process still requires a special process, which reduces the pickling efficiency

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