Multi-stage pump middle section double-impeller slope flow channel

Abstract

The invention discloses a multi-stage pump middle section double-impeller slope flow channel, and relates to the technical field of water pump. The channel comprises a plurality of water guide components, the water guide components comprise middle section guide vanes and impellers, the middle section guide vanes comprise front cover plates and rear cover plates, a plurality of vortex-shaped flow guide vanes are arranged between the front cover plates and the rear cover plates in a inclined manner, a plurality of openings are arranged at the edge of the front cover plates, the openings are located between the adjacent flow guide vanes, and the openings expose parts of the rear cover plates; and the impellers comprise front plates which communicate with shaft sleeves for connecting a wheel axle, a plurality of vortex-shaped drainage blades are arranged on the peripheral side of the shaft sleeves in a inclined manner, the side of the drainage blades far away from the front plates is fixedprovides with a water inlet ring, the front plates, the impellers and the peripheral side of the water inlet ring are inclined and cut to form a inclined surface. In view of the problems of small flow and low power existing in the prior art, the channel can guide the flow of water in a plurality of middle guide vanes to flow in a vortex shape through setting double inclined vanes, thus greatly improving the flow and the working efficiency.

Description

technical field [0001] The invention relates to the technical field of water pumps, more specifically, it relates to a double-impeller inclined channel in the middle section of a multi-stage pump. Background technique [0002] The impeller is usually made of cast iron and is mainly used in the pump. The shape and size of the pump impeller has a great influence on the performance of the pump. [0003] For the existing impeller structure, such as the Chinese patent with the patent publication number CN202811481U, it discloses an inner impeller of a feed water pump, which includes a plurality of impeller blades, a shaft hole matched with the impeller shaft, an impeller ring, and a shaft that is kept simultaneously with the impeller shaft. The rotating keyway, the inner impeller is made of phenolic resin, and the impeller blades are made of flat blades. [0004] In the above-mentioned patent, the edge of the blade is processed by cross-cutting, which is convenient for processi...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low flow rate and low power in the prior art, the purpose of the present invention is to provide a double-impeller slope flow channel in the middle section of the multi-stage pump, which has the advantages of large flow rate and high power

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