Self-priming centrifugal pump
A self-priming centrifugal pump and centrifugal pump technology, applied in the field of water pumps, can solve the problems of difficult production and low operating efficiency
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[0016] like figure 1 As shown, a self-priming centrifugal pump includes a centrifugal pump body 1, and the centrifugal pump body 1 is a common centrifugal pump structure, which is provided with an impeller chamber 11, and the impeller chamber 11 is provided with a water inlet 12. The water inlet 12 is connected and sealed with the water inlet pipe 3 and fixed by bolts, and a check valve 31 is installed on the water inlet pipe 3 .
[0017] In addition, the present invention adds an air-water separation barrel 2 on the basis of the ordinary centrifugal pump. The air-water separation barrel 2 is arranged above the pump body 1 of the centrifugal pump. The upper part of the impeller chamber 11 is provided with an upward protruding Interface 13, the upper interface 13 communicates with the impeller chamber 11, the bottom of the air-water separation barrel 2 is connected with the upper interface, the air-water separation barrel 2 is connected to a return water pipeline 4, and the ret...
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