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1. 发明公开

US20230243355A1 PNEUMATIC TYPE WATER-FREE STARTING SELF-PRIMING DEVICE 审中-公开
公开(公告)号：US20230243355A1
公开(公告)日：2023-08-03
申请号：US18021187
申请日：2021-12-29
申请人： JIANGSU UNIVERSITY
发明人： Guangjie PENG , Jialin DU , Hao CHANG , Shiming HONG
IPC分类号： F04D9/02 , B01D19/00
CPC分类号： F04D9/02 , B01D19/0042
摘要： A pneumatic type water-free starting self-priming device includes a driving device, and a gas-liquid separation chamber and an expandable gas-liquid separation chamber respectively arranged on two sides of the driving device. The driving device uses high-speed gas to drive a drive disk to rotate and drive a drive shaft to rotate. The gas-liquid separation chamber uses a telescopic piston shaft rod to generate a pressure difference between the gas-liquid separation chamber and outside to suck in water, so as to realize water suction, gas-liquid separation and water drainage. The expandable gas-liquid separation chamber uses shrinkage or expansion of volumes of inner and outer chambers to generate a pressure difference to suck in water, so as to realize water suction, gas-liquid separation and water drainage. Also, the high-speed gas from the driving device flows through the two chambers, so that air can be discharged quickly.

2. 发明公开

US20230313801A1 SELF-PRIMING APPARATUS FOR QUICK NO-WATER STARTUP 审中-公开
公开(公告)号：US20230313801A1
公开(公告)日：2023-10-05
申请号：US17914366
申请日：2021-11-01
申请人： Jiangsu University
发明人： Xiaowei LI , Hao CHANG , Jialin DU , Guangjie Peng , Weidong SHI , Shiming HONG
IPC分类号： F04D9/02 , B01D19/00
CPC分类号： F04D9/02 , B01D19/0052 , B01D19/0036
摘要： A self-priming apparatus for quick no-water startup includes a front-stage inlet chamber, a middle-stage gas-liquid separation chamber, and a rear-stage gas-liquid separation chamber. A plurality of two-stage chamber gas-liquid separation one-way channels are symmetrically arranged between adjacent chambers of the front-stage inlet chamber, the middle-stage gas-liquid separation chamber and the rear-stage gas-liquid separation chamber. A plurality of one-way outlets are symmetrically arranged in an inner cavity of the rear-stage gas-liquid separation chamber. By decreasing or increasing the volumes of an outer cavity and an inner cavity of the front-stage inlet chamber, water is sucked in due to pressure difference and water intake and preliminary gas-liquid separation are carried out. The middle-stage gas-liquid separation chamber is configured for gas-liquid separation. By decreasing or increasing the volume of the inner cavity of the rear-stage gas-liquid separation chamber, water is rapidly expelled due to pressure difference and gas-liquid separation is carried out.

3. 发明公开

US20230265850A1 QUICK NO-WATER STARTUP APPARATUS FOR CENTRIFUGAL PUMP 审中-公开
公开(公告)号：US20230265850A1
公开(公告)日：2023-08-24
申请号：US17787941
申请日：2021-08-05
申请人： Jiangsu University
发明人： Guangjie Peng , Jialin DU , Hao CHANG
IPC分类号： F04D9/02 , F04D1/00
CPC分类号： F04D9/02 , F04D1/00
摘要： A quick no-water startup apparatus for a centrifugal pump includes, from top to bottom in sequence, one-way passages (1), a self-priming chamber housing (41), sliding devices (5), a self-priming chamber (4), chamber partition plates (2) a concave-convex impeller (3), inlet channels (6) connected on two sides of the self-priming chamber (4), a spring device (7) of an upper-side x-shaped gas-liquid separation device, the upper-side x-shaped gas-liquid separation device (8), upper and middle-side gas-liquid separation device connecting shafts (9), a middle-side gas-liquid separation device (10), lower-side backflow-type gas-liquid separation devices (11), v-shaped backflow channels (122), an inverted v-shaped inlet channel (121), and an inlet. The quick no-water startup apparatus of the present invention enables the centrifugal pump to directly enter a normal operating condition after no-water startup, and 36 times of air exhaust can be completed while the concave-convex impeller (3) in the self-priming chamber (4) rotates by a circle in the early stage. Besides, the apparatus is provided with the upper, middle, and lower gas-liquid separation devices to fully realize separation of gas and liquid, so that gas can be exhausted more quickly and the chamber is filled with water. Therefore, the working efficiency is significantly improved and the operation process is greatly simplified.

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