Antirust spraying device on outer surface of steel pipe

Abstract

The invention discloses an antirust spraying device on an outer surface of a steel pipe. The device comprises a lifting mechanism, two sets of UV curing mechanisms with the same structure, a UV paint spraying mechanism, a pressing roller mechanism, a cooling mechanism and a recovery mechanism. A lifting frame drives the spraying device to move up and down, and when the spraying device sprays steel pipes with different diameters, a centre line of the spraying device coincides with those of the steel pipes. The UV curing mechanisms make the UV paint on the surface of the steel pipe rapidly cured without a special drying furnace device, and the space is saved. The UV paint spraying mechanism effectively controls the thickness of the UV paint film, and the pressing roller mechanism reduces the steel pipe jump in the movement and reduces the influence of the steel pipe jump on the paint film uniformity. In the spraying process, coatings in a front spraying roller and a rear spraying rollerare driven upwards by a fan, are filtered by a filter screen and are returned to a coating barrel by a recovery roller through a recovery oil passage. Therefore, the recovery rate of the coatings is improved. The antirust spraying device can be used for spraying steel pipes, sections, rods, wheel hubs and other metal materials.

Description

technical field [0001] The invention relates to a spraying device, in particular to a rust-proof spraying device for the outer surface of a steel pipe. Background technique [0002] At present, there are mainly three methods for antirust spraying on the outer surface of steel pipes. One is to use the paint pump to spray paint directly on the surface of the steel pipe in all directions through multiple paint spray holes in the ring pipe, so that the surface of the steel pipe can be sprayed with paint at a high speed without missing coating, and then through several paint brushes Brush off the excess paint evenly, and let the excess paint flow back into the paint tank for automatic circulation spraying. The paint recovery rate of this spraying method is low, the thickness of the paint film is not easy to control, and the paint curing time is long. Usually, special drying furnace equipment is required, which takes up a lot of space; 2. Firstly, the steel pipe is heated by inte...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of the original anti-rust spraying device on the outer surface of steel pipes such as uneven paint film, long curing time of paint, large space occupation, and low recovery rate of paint, the object of the present invention is to provide an anti-rust spraying device on the outer surface of steel pipes.

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