ULTRAFINE POWDER SUCTION TYPE FEEDING DEVICE

WIPO Patent Application WO/2022/134677

A1

An ultrafine powder suction type feeding device, comprising a powder barrel (7), a suction nozzle (1), a negative pressure suction pipe (2), and an air supply pipe (5). The suction nozzle (1) is located in the powder barrel (7). An end portion of the negative pressure suction pipe (2) is connected to the suction nozzle (1). A suction nozzle part (3) of the negative pressure suction pipe is arranged in an inner cavity of the suction nozzle (1). The suction nozzle part (3) of the negative pressure suction pipe is inwardly shrunken in a nozzle part (4) of the suction nozzle. An end portion of the air supply pipe (5) is communicated with the top of the suction nozzle (1), and the tail of the air supply pipe (5) is connected to the outside of the powder barrel (7). In the whole powder suction process, the powder can be operated without mechanical external force or a small amount of mechanical external force, and therefore, agglomeration and caking of powder (6) are not caused. In addition, the air source suctioned in a self-suction manner can avoid the problem that the powder cannot be suctioned due to poor air permeability during powder suction.

ZHAO DENGYONG (CN)
WANG HAIYONG (CN)
QIU JIANDONG (CN)
CHENG YUE (CN)

PCT/CN2021/119095

June 30, 2022

September 17, 2021

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JIANGSU BOQIAN NEW MAT CO LTD (CN)

B65G53/24; B65G53/16

WO2012019576A1

2012-02-16

CN214086655U	2021-08-31
CN204528702U	2015-08-05
CN109230541A	2019-01-18
CN202337581U	2012-07-18

PACIFIC CHINA PATENT AGENT CO., LTD. (CN)

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