公开(公告)号：US12025156B1

公开(公告)日：2024-07-02

申请号：US18607255

申请日：2024-03-15

申请人： Taizhou Vocational College of Science & Technology ,  Wenling Fluid Machinery Technology Institute of Jiangsu University

发明人： Chao Wang ,  Zhenhua Shen ,  Jianqiang Ma ,  Jinfeng Zhang ,  Yin Luo ,  Guidong Li

IPC分类号： F04D29/66 ,  A01C23/04 ,  A01G25/02 ,  F04D1/00 ,  F04D13/06 ,  F04D13/14 ,  F04D15/00 ,  F04D29/049 ,  F04D29/40 ,  F04D29/42 ,  F04D29/44 ,  F04D29/46 ,  F04D29/48 ,  F04D29/58

CPC分类号： F04D29/669 ,  F04D1/00 ,  F04D13/06 ,  F04D13/0606 ,  F04D13/0646 ,  F04D29/049 ,  F04D29/406 ,  F04D29/426 ,  F04D29/4293 ,  F04D29/445 ,  F04D29/466 ,  F04D29/486 ,  F04D29/66 ,  A01C23/04 ,  A01G25/02 ,  F04D13/14 ,  F04D15/0005 ,  F04D29/5886

摘要： The invention discloses a water feeding pump or a fertilizer applying pump for a pump station of a fertilization and irrigation system. The water feeding pump (2) or the fertilizer applying pump (3) is a centrifugal pump. The centrifugal pump includes a volute and an impeller. The impeller includes a front disc (12), a rear disc (13), and main blades (14), and a plurality of back blades (18) distributed along a circumferential direction are disposed on a back surface of the rear disc, where an auxiliary rotating disc (11) is disposed between the impeller and a rear side wall of the volute, the auxiliary rotating disc is a rotating member and is driven by the back blades of the impeller to rotate.

公开(公告)号：US12129870B1

公开(公告)日：2024-10-29

申请号：US18432510

申请日：2024-02-05

申请人： Taizhou Vocational College of Science & Technology ,  Wenling Fluid Machinery Technology Institute of Jiangsu University

发明人： Zhenhua Shen ,  Chao Wang ,  Jinfeng Zhang ,  Yin Luo ,  Xiao Jie ,  Nianen Zhu ,  Lijie Weng

IPC分类号： F04D27/00 ,  F04D1/00 ,  F04D9/06 ,  F04D15/00 ,  F04D29/08 ,  F04D29/28 ,  F04D29/66

CPC分类号： F04D29/669 ,  F04D1/00 ,  F04D9/06 ,  F04D15/0005 ,  F04D27/00 ,  F04D29/086 ,  F04D29/28

摘要： The present invention discloses an adjusting apparatus for improving an anti-cavitation effect of a water pump. The adjusting apparatus comprises a centrifugal impeller (10), a volute (20), an adjusting device (30), a jet device (40), a pressure and/or flow monitoring device, and a controller. The centrifugal impeller comprises a rear side labyrinth seal (15) and a front side labyrinth seal (16), and the volute comprises a first sealing portion (21), a first pressure adjusting cavity (22), a second sealing portion (23) and a second pressure adjusting cavity (24), where the position of the first sealing portion is provided with the first pressure adjusting cavity, the position of the second sealing portion is provided with the second pressure adjusting cavity, the second pressure adjusting cavity is in communication with the first pressure adjusting cavity through the first pipeline.