Annular powder feed nozzle

By incorporating an arc-shaped reflective surface and a detachable powder disperser within the annular powder feeding nozzle, combined with threaded connections and a cooling design, the problems of powder mixing uniformity and durability are solved, achieving stable powder delivery and a long nozzle life. This supports simultaneous feeding of filament and powder, as well as electrical insulation, thereby improving the process quality of additive manufacturing.

CN224543139UActive Publication Date: 2026-07-24NANJING ENIGMA IND AUTOMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING ENIGMA IND AUTOMATION TECH CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing annular powder feeding nozzles suffer from poor mixing uniformity when processing powders of various materials, resulting in concentrated distribution of the same type of powder, which affects the additive manufacturing effect, and also lacks durability and maintainability.

Method used

The nozzle features an arc-shaped reflective surface and a detachable powder disperser. The arc-shaped reflective surface expands the powder dispersion angle, while the detachable powder disperser enables uniform powder mixing and independent replacement. Combined with the threaded connection of the nozzle core and outer casing, maintenance is convenient. At the same time, the core structure forms a space for the filament feeding kit, supporting the simultaneous feeding of filament and powder. The cooling effect is improved through the cooling shell and flow-blocking baffle design.

Benefits of technology

It significantly improves powder dispersibility and mixing uniformity, ensures powder flow stability, extends nozzle life, and supports simultaneous filament and powder feeding and electrical insulation functions, thereby enhancing the process quality and safety of additive manufacturing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224543139U_ABST
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Abstract

The application relates to a ring-shaped powder feeding nozzle in the field of additive manufacturing, which comprises a nozzle body, a ring-shaped powder feeding channel is arranged in the nozzle body, a plurality of powder feeding interfaces are arranged on the nozzle body, the powder feeding interfaces are communicated with the ring-shaped powder feeding channel, a plurality of powder spreaders are arranged in the nozzle body, the powder spreaders are located in the ring-shaped powder feeding channel, arc-shaped reflecting surfaces are arranged on the powder spreaders, and the arc-shaped reflecting surfaces are located in a feeding area of the ring-shaped powder feeding channel. The application has the effect of fully dispersing and uniformly mixing powder.
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