Centrifugal pump
A centrifugal pump and pump casing technology, applied in the field of centrifugal pumps, can solve the problems of low operating efficiency and large useless work, and achieve the effect of improving operating efficiency and eliminating eddy currents
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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] Such as Figure 1 to Figure 5 As shown, the centrifugal pump of the present invention includes a pump casing 1 and an impeller 2 installed in the pump casing 1, the impeller 2 is connected with the main shaft 3, and rotates under the driving of the main shaft 3 and the driving parts; the top of the pump casing 1 is provided with The water outlet 4 is provided with a water inlet 5 on the side of the pump casing 1 , and the working surface of the impeller 2 faces the water inlet 5 . The impeller 2 includes several blades 201 , and an impeller flow channel 202 is formed between adjacent blades 201 . In the present invention, the annular channel 10 in the pump casing 1 has a trapezoidal cross-section, that is, forms an annular gradually expanding trapezoidal channel, and the small side of the trapezoid in the trapezoidal cross-sec...
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