Atmosphere purification method and system

Abstract

The invention relates to an atmosphere purification method. The atmosphere purification method comprises the following steps of: a filtering component and pipeline gas washing step: inflating a filtering component and a pipeline connected with the filtering component through inert gas so as to exhaust air; and sucking atmosphere in a 3D printer into the filtering component through an air suction pipeline to be subjected to smoke and dust removal treatment and then sending the atmosphere back into the 3D printer through an air blowing pipeline to form a filtering and purifying loop, and removing smoke and dust in circulation. The invention further provides an atmosphere purification system; The atmosphere purification system comprises the filtering component, and the filtering component is connected with the 3D printer through the air suction pipeline and the air blowing pipeline to form a filtering and purifying circulation loop; and an air suction control valve is arranged at the connecting end of the air suction pipeline and the 3D printer, an air blowing control valve is arranged at the connecting end of the air blowing pipeline and the 3D printer, the air suction pipeline and the air blowing pipeline are connected through a connecting pipeline, the filtering component is connected with an inert gas source through an air inlet pipeline, and a connecting pipeline control valve is arranged on the connecting pipeline. Smoke dust is isolated through the filtering component to obtain cleaned gas in circulation.

Description

technical field [0001] The invention belongs to the field of printing equipment and relates to 3D printing equipment, in particular to an atmosphere purification method and system. Background technique [0002] At present, the mainstream technology of metal 3D printing is to use laser as the energy source to melt powder into shape. When the laser melts metal powder, it will be accompanied by the generation of dust. If it cannot be treated in time, the dust will adhere to the forming cavity under the disturbance of the hot air flow, or diffuse on the laser forming surface, causing pollution of the forming area and reducing the The accuracy of metal 3D printing and the quality of the workpiece, too much smoke and dust will affect the penetration of the laser, resulting in a decrease in the sintering ability of the 3D printer, and will also cover the protective mirror of the laser system, causing the lens to burn. Because the molding chamber of metal 3D printers is usually fil...

AI Technical Summary

Problems solved by technology

Regardless of the composition, its chemical activity and residual energy are extremely high, making the collected smoke and dust flammable and explosive. When these substances come into contact with the outside air, they are prone to combustion or explosion reactions, which is very dangerous

Images