Double-filter-element dust removal system applied to small 3D printer and control method thereof

Abstract

The invention discloses a double-filter-element dust removal system applied to a small 3D printer. The double-filter-element dust removal system comprises a large-particle smoke dust filter and a double-filter-element smoke dust filter which are sequentially connected. One end of the large-particle smoke dust filter is connected with a 3D printer forming chamber and used for filtering large-particle smoke dust in smoke dust-containing gas, and the other end of the large-particle smoke dust filter is connected with the double-filter-element smoke dust filter. The double-filter-element smoke dust filter comprises a double-filter-element filter cartridge, an air inlet pipe and an exhaust pipe. Two filter cartridge cavities which are separated from each other are arranged in the double-filter-element filter cartridge, an exhaust chamber is arranged at the upper end of each filter cartridge cavity, and a filter element is arranged in each filter cartridge cavity. The smoke dust filter with the double filter elements has a plurality of switchable filtering modes. Compared with the prior art, the dust removal system can adapt to more working conditions and is more flexible and convenient to use, and the purposes of energy conservation and emission reduction can be achieved while the dust removal efficiency is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of 3D printing, in particular to a double-filter dedusting system applied to a small 3D printer and a control method thereof. Background technique [0002] 3D printing or additive manufacturing is a technique for building three-dimensional objects from CAD models or digital 3D models. "3D printing" can take many forms, the most common of which is the deposition, bonding or curing of materials under computer control to form three-dimensional objects, most typically by layering materials on top of each other. Selective laser sintering (SLS) is an important additive manufacturing method. Its principle is that the laser beam selectively sinters the powder material layer by layer according to the layered cross-section information. After all the sintering is completed, the excess powder is removed to obtain the finished part. . In the process of powder sintering, a large amount of smoke, volatile matter ...

AI Technical Summary

Problems solved by technology

Most of these materials are combustible, and very small particles (even in the range of nanoparticles) can be produced during the 3D printing process. If the dust is not well removed, there will be safety hazards such as explosions and fires that endanger personal safety.

[0003] The working conditions in the actual production process are very complicated. Even if some existing dust removal systems can use double filter elements for filtering, the filtering method is single and cannot be flexibly adjusted according to the actual working conditions.

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