Laser cleaning device of small-caliber inner tube

Abstract

The invention relates to the field of surface treatment, in particular to a laser cleaning device of a small-caliber inner tube. The laser cleaning device is composed of a focusing lens, a reflector,a glass shield, a rear protection sleeve, a front protection sleeve, an electromotor and an air nozzle. According to the laser cleaning device, after a laser beam passes through the focusing lens, thelaser beam arrives at the reflector before being focused, then the laser beam passes through a light-transmitting window and a cleaning port to reach the inner wall of the small-caliber steel tube, and the motor drives the reflector to rotate; the feeding direction of the steel tube is opposite to the direction of the unfocused laser beam; the axis of the laser beam coincides with the central axis of the small-caliber steel tube; compressed air is introduced into the air nozzle, the compressed air is discharged from the cleaning port, and the discharge direction of the compressed air from thecleaning port is the same as the reflection direction of the laser beam after the laser beam is reflected through the reflector; and due to the adoption of a laser device, an optical isolator does not need to be installed, so that a laser output module is greatly simplified, and miniaturization of a cleaning head is facilitated.

Description

technical field [0001] The invention relates to the field of surface treatment, in particular to a device for laser cleaning small-diameter inner tubes. Background technique [0002] The inner wall of the steel pipe usually needs to be derusted, and the derusting of the inner wall of the small-diameter steel pipe is currently a difficult problem. Laser cleaning is a new type of cleaning method, which is environmentally friendly and can effectively remove the rust layer attached to the surface of the steel pipe. However, due to the large size of the traditional laser rust removal head, it is usually impossible to remove rust on pipes with a diameter of less than 30cm. The Chinese invention patent application with the application number 201410421688.0 discloses a ring-shaped laser belt descaling machine. The laser belt descaling machine shapes the laser beam into a ring shape through optical components, thereby realizing the cleaning of the pipe wall. Since laser cleaning requ...

AI Technical Summary

Problems solved by technology

Laser cleaning is a new type of cleaning method, which is environmentally friendly and can effectively remove the rust layer attached to the surface of the steel pipe. However, due to the large size of the traditional laser rust removal head, it is usually impossible to remove rust on pipes with a diameter of less than 30cm

The Chinese invention patent application with the application number 201410421688.0 discloses a ring-shaped laser belt descaling machine. The laser belt descaling machine shapes the laser beam into a ring shape through optical components, thereby realizing the cleaning of the pipe wall. Since laser cleaning requires 10 6 GW / cm 2 For the above power density, the pulse width needs to exceed 100ns, so the power of the laser to achieve this kind of strip cleaning needs to be as high as tens of thousands of watts. Currently, there is no such pulse laser on the market. In addition, the rust removal head of this patent is also vulnerable to dust. pollution

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