Title:
SELF-PRIMING CENTRIFUGAL PUMP
Document Type and Number:
WIPO Patent Application WO/2023/279769
Kind Code:
A1
Abstract:
A self-priming centrifugal pump, comprising a pump body (1), a water inlet (11), a water outlet (12), an impeller (13), a water intake channel (2), an inlet support assembly (3), a flow guide assembly (4), and a pressure compensation assembly (5), wherein the water intake channel (2) is provided in the pump body (1), one end of the water intake channel (2) being in communication with the outside by means of the horizontally arranged water inlet (11), and the other end thereof being in communication with the outside by means of the vertically arranged water outlet (12). The water level of the water inlet of the centrifugal pump is raised by means of the inlet support assembly (3), which avoids the circumstance where injected water for start-up flows from the water outlet (12) and affects the start-up of the centrifugal pump, and ensures that the interior of the pump body (1) is fully and smoothly filled with the water for start-up. The impeller (13) stops rotating, and under the action of a water baffle plate (33), the remaining water inside the pump body (1) is blocked by the water baffle plate (33) and cannot flow out from the water inlet (11), and is thus stored inside the pump body (1) to serve as water for start-up during the next start-up of the centrifugal pump, thereby reducing preparatory work for the next start-up of the centrifugal pump, and making the start-up of the centrifugal pump smoother.
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Inventors:
YAN TUFU (CN)
YAN CHENGGANG (CN)
LIN RONG (CN)
ZHANG YI (CN)
JIN SHIHAI (CN)
YAN CHENGGANG (CN)
LIN RONG (CN)
ZHANG YI (CN)
JIN SHIHAI (CN)
Application Number:
PCT/CN2022/081966
Publication Date:
January 12, 2023
Filing Date:
March 21, 2022
Export Citation:
Assignee:
LEO GROUP PUMP ZHEJIANG CO LTD (CN)
International Classes:
F04D13/06; F04D9/02
Foreign References:
| CN113323886A | 2021-08-31 | |||
| CN208330852U | 2019-01-04 | |||
| CN2091369U | 1991-12-25 | |||
| CN108757495A | 2018-11-06 | |||
| US20140169940A1 | 2014-06-19 | |||
| JP3222609U | 2019-08-15 | |||
| JPH04209990A | 1992-07-31 |
Attorney, Agent or Firm:
LANTIAN INTELLECTUAL PROPERTY AGENCY (CN)
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