A large-diameter plastic-coated steel pipe automatic spraying equipment

Abstract

The invention discloses an automatic spraying equipment for large-diameter plastic-coated steel pipes. The spraying equipment includes rails, internal spraying equipment for spraying the inner wall of the steel pipe, external spraying equipment for spraying the outer wall of the steel pipe, and an intermediate frequency coil for heating. The internal spraying equipment and the external spraying equipment are respectively provided with an internal spray gun that can extend into the steel pipe and an external spray gun facing the outer wall of the steel pipe. The steel pipe passes through the intermediate frequency coil. The external spray equipment is arranged on the moving track and can Moving along the track, the track is also provided with a driving trolley and a driven trolley that can move along the track, and the active trolley and the driven trolley are connected through a linkage component. The invention greatly improves the production efficiency of the plastic-coated steel pipe, and in addition, it has the characteristics of energy saving and production cost reduction, and at the same time, the invention can also improve the quality of steel pipe spraying.

Description

Technical field: [0001] The invention relates to the technical field of steel pipe spraying equipment, in particular to an automatic spraying equipment for large-diameter plastic-coated steel pipes. Background technique: [0002] Large-diameter steel pipes are used in a wide range of fields, such as oil transportation, sewage discharge, and drinking water transportation. During the use of large-diameter steel pipes and due to maintenance considerations, large-diameter The service life of the steel pipe will be an important criterion for its consideration, and the factors that affect its service life are the natural environment and the corrosion of the pipe wall by the conveyed material during use. Therefore, it is necessary to prevent rust and corrosion for such large-diameter steel pipes. In the prior art, the more advanced method for anti-corrosion treatment of steel pipes is to spray epoxy resin on the inner and outer walls of steel pipes, while the existing spraying trea...

AI Technical Summary

Problems solved by technology

[0002] Large-diameter steel pipes are used in a wide range of fields, such as oil transportation, sewage discharge, and drinking water transportation. During the use of large-diameter steel pipes and due to maintenance considerations, large-diameter The service life of the steel pipe will be an important criterion for its consideration, and the factors that affect its service life are the natural environment and the corrosion of the pipe wall by the conveyed material during use. Therefore, it is necessary to prevent rust and corrosion for such large-diameter steel pipes. In the prior art, the more advanced method for anti-corrosion treatment of steel pipes is to spray epoxy resin on the inner and outer walls of steel pipes, while the existing spraying treatment process generally adopts manual methods. Preheat in the oven, take it out of the oven after reaching a certain temperature, and then carry out manual internal and external spraying. This method consumes high energy, has poor product controllability, employs many people, and has low production efficiency.

Images