Galvanized steel pipe inner wall blowing head

Abstract

The invention relates to a galvanized steel pipe inner wall blowing head which comprises a gland, a cylinder and an air head. The head of the air head is spherical. A bolt arranged on a center shaft of the air head is coaxial with the cylinder, and the gland is fixedly mounted through a fixing nut. The gland is coaxially and fixedly mounted on the cylinder and provided with an air inlet. An air cavity is formed by a closed space formed by the gland, the cylinder and the air head. A gap is reserved between the inner edge of the end of the cylinder and the spherical outer edge of the air head. A circle of flow blocking holes are formed in the outer edge of the air head at intervals. The galvanized steel pipe inner wall blowing head adopts the mode that the gap formed by the inner edge of the circular cylinder and the outer edge of the air head serves as a blowing hole, formed air flow is in an umbrella shape, the inner wall of a galvanized steel pipe can be uniformly blown, the blowing effect is good, and the flow is consistent; and a plurality of distribution holes are uniformly formed in the cylinder in the radial direction and enable air to be more uniformly input into the air cavity, airflow turbulence caused by a vortex formed in the air cavity is prevented, and the blowing effect is improved.

Description

technical field [0001] The invention belongs to the field of metallurgy and relates to the treatment of galvanized steel pipes after galvanizing, in particular to a blowing head for the inner wall of galvanized steel pipes. Background technique [0002] After surface derusting and solvent treatment, galvanized steel pipes need to be hot-dip galvanized. There is a large amount of metal zinc residue on the inner wall of the galvanized steel pipe, which needs to be blown away by the pressure air in the blowing head . At present, the blowing head adopts the method of blowing holes, and the blowing holes are evenly distributed on the outer edge of the blowing head, so as to realize uniform spraying on the inner wall of the galvanized steel pipe. The blowing head with this structure does not spray the inner wall of the galvanized steel pipe very uniformly when blowing, and a gas backflow will be formed in the middle of the blowing head, which will cause turbulence to the blowing ...

AI Technical Summary

Problems solved by technology

When the blowing head with this structure is blowing, the blowing to the inner wall of the galvanized steel pipe is not very uniform, and the gas backflow will be formed in the middle part of the blowing head, and the backflow will cause turbulence to the blowing air flow, resulting in the blowing Cross-linking of the gas streams, which affects the stable and uniform spraying of the zinc liquid

[0003] Through the search, no relevant published patent documents were found

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