QUICK WATER-FREE STARTING DEVICE APPLIED TO CENTRIFUGAL PUMP

WIPO Patent Application WO/2023/284038

A1

A quick water-free starting device applied to a centrifugal pump, comprising one-way channels (1), a self-priming cavity shell (41), sliding devices (5), a self-priming cavity (4), cavity partition plates (2), a concave-convex impeller (3), inlet flow channels (6) connected to both sides of the self-priming cavity (4), a spring device (7) of an upper "X"-shaped gas-liquid separation device, an upper "X"-shaped gas-liquid separation device (8), connecting shafts (9) of upper and middle gas-liquid separation devices, a middle gas-liquid separation device (10), lower backflow-type gas-liquid separation devices (11), "V"-shaped backflow channels (122), inverted "V"-shaped inlet flow channels (121), and an inlet, which are sequentially provided from top to bottom. The device realizes water-free starting of a centrifugal pump, can directly enter a normal running condition, and can complete, in an early stage, 36 air exhausts by one rotation of the concave-convex impeller (3) in the self-priming cavity (4). In addition, the device is provided with upper, middle, and lower gas-liquid separation devices to fully realize gas-liquid separation, thereby more quickly discharging air and filling a cavity with water, and thus can significantly improve work efficiency and greatly simplify an operation process.

PENG GUANGJIE (CN)
DU JIALIN (CN)
CHANG HAO (CN)

PCT/CN2021/110871

January 19, 2023

August 05, 2021

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UNIV JIANGSU (CN)

F04D9/02

CN113107858A	2021-07-13
CN109578288A	2019-04-05
CN108894992A	2018-11-27
CN110397599A	2019-11-01
US20040175279A1	2004-09-09
JP2001107884A	2001-04-17

NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)

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