Coaxial powder-feeding nozzle used for additive manufacturing on inner wall and having self-cleaning function
US11826827B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2021 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | Oct 23, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A coaxial powder-feeding nozzle includes a partition wall-type shell, a powder flow area, a cooling liquid flow area and a shielding gas conveying channel. A powder self-cleaning filter is on the outer side of the partition wall-type shell; the powder self-cleaning filter includes a set of powder collecting tubes on each side of the partition wall-type shell in the axial direction; each set of powder collecting tubes includes at least one powder collecting tube; under the coaction of a suction force applied by a powder collecting system and the self-weight of residual powder, a residual powder inlet of each powder collecting tube causes the residual powder on the opposite side to roll down to the bottom along the wall surface of a metal tube to be processed on the same side, and to be gathered at the front end of the residual powder inlet of the powder collecting tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.