Powder reclamation system and operating method

Patent metadata

Field	Value
Publication number	US-11794256-B2
Application number	US-201916666829-A
Country	US
Kind code	B2
Filing date	Oct 29, 2019
Priority date	Oct 29, 2019
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A powder reclamation system for reclaiming a metal powder from a metal powder processing device is provided. The powder reclamation system includes a filter housing defining an inlet and an outlet; a filtered reclaimed powder hopper in communication with the outlet of the filter housing for receiving a filtered reclaimed powder; a powder recirculation passageway configured for providing a flow of powder to a metal powder processing device, the powder recirculation passageway in flow communication with the filtered reclaimed powder hopper; a virgin powder hopper containing a virgin powder also in communication with the powder recirculation passageway; and a controller operable with the powder reclamation system for providing a mixture of the filtered reclaimed powder and the virgin powder through the powder recirculation passageway.

First claim

What is claimed is:

1. A powder reclamation system for reclaiming a metal powder from a metal powder processing device, the powder reclamation system comprising:
a filter housing defining an inlet and an outlet;
a filtered reclaimed powder hopper in communication with the outlet of the filter housing for receiving a filtered reclaimed powder;
a powder recirculation passageway configured for providing a flow of powder to a metal powder processing device, the powder recirculation passageway in flow communication with the filtered reclaimed powder hopper;
a virgin powder hopper containing a virgin powder also in communication with the powder recirculation passageway;
a first controller operable with the filtered reclaimed powder hopper for providing a first amount of the filtered reclaimed powder through the powder recirculation passageway;
a second controller operable with the virgin powder hopper for providing a second amount of the virgin powder through the powder recirculation passageway; and
a support structure, wherein the filter housing is movable relative to the support structure,
wherein the filter housing comprises a filter assembly disposed between the inlet and the outlet of the filter housing, and wherein the filter assembly comprises:
a first filter fixed relative to the filter housing, the first filter being rigid; and
a second filter coupled within the filter housing adjacent to the first filter, the second filter being flexible such that the second filter is movable relative to the first filter within the filter housing when the filter housing moves relative to the support structure, the first filter and the second filter configured to restrict a first portion of a powder larger than a predetermined threshold from reaching the outlet and to allow a second portion of the powder smaller than the predetermined threshold to pass therethrough.

2. The powder reclamation system of claim 1 , wherein the second portion of the powder comprises the filtered reclaimed powder.

3. The powder reclamation system of claim 1 , further comprising:
a pressurized carrier gas source, wherein one of the first controller and the second controller is operably coupled to the pressurized carrier gas source for providing a mixture of the filtered reclaimed powder and the virgin powder through the powder recirculation passageway.

4. The powder reclamation system of claim 1 , further comprising:
a filtered powder valve operable with the filtered reclaimed powder hopper for regulating a flow of filtered reclaimed powder to the powder recirculation passageway;
a virgin powder valve operable with the filtered reclaimed powder hopper for regulating a flow of virgin powder to the powder recirculation passageway;
wherein the first controller is operably coupled to the filtered powder valve and the second controller is operably coupled to the virgin powder valve for providing a mixture of the filtered reclaimed powder and the virgin powder through the powder recirculation passageway.

5. The powder reclamation system of claim 4 , wherein the first controller and the second controller are configured to sequentially open the filtered powder valve and the virgin powder valve to provide the mixture of the filtered reclaimed powder and the virgin powder through the powder recirculation passageway.

6. The powder reclamation system of claim 1 , wherein the first amount of the filtered reclaimed powder and the second amount of the virgin powder sequentially provided by the controller are different.

7. The powder reclamation system of claim 1 , wherein the first controller and the second controller are configured for sequentially providing powder from the filtered reclaimed powder hopper and from the virgin powder hopper to ensure the powder provided to the metal powder processing device has a desired mixture of the filtered reclaimed powder and the virgin powder.

Assignees

• Gen Electric

Inventors

• Charlebois Anthony
• Roy Mathieu
• Gauthier Patrick

Classifications

• B22F12/82 Primary

  Combination of additive manufacturing apparatus or devices with other processing apparatus or devices · CPC title

• B01F25/80

  Falling particle mixers, e.g. with repeated agitation along a vertical axis · CPC title

• B07B1/28

  Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens · CPC title

• B07B1/4663

  Multi-layer screening surfaces · CPC title

• B22F9/00

  Making metallic powder or suspensions thereof · CPC title