A multi-stage water pump

By employing an integrated diffuser structure in a multi-stage water pump, and utilizing the design of the front and rear diffuser ends, eddies are eliminated, fluid flow stability is improved, and the problem of insufficient fluid delivery in existing technologies is solved, achieving more efficient pressurization and operation.

CN224432823UActive Publication Date: 2026-06-30ZHEJIANG LONKEY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG LONKEY TECH CO LTD
Filing Date
2025-09-02
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the existing technology, multi-stage pumps with multi-stage motors have difficulty effectively eliminating eddies and turbulence during fluid transportation, resulting in insufficient conversion of fluid kinetic energy into pressure energy and insufficient pressurization capacity.

Method used

The diffuser adopts an integrated structure, which is divided into a front diffuser end and a rear diffuser end. Combined with the front diffuser blades and the rear diffuser blades, the fluid is precisely combed through the front diffuser channel and the diffuser window to eliminate eddies, improve the stability of the fluid flow pattern, and enhance the sealing performance and structural rigidity.

Benefits of technology

It significantly improves the pump's boosting capacity and operating efficiency, making the conversion of kinetic energy into pressure energy more complete and reducing the risk of failure.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224432823U_ABST
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Abstract

This utility model provides a multi-stage water pump, belonging to the field of water pump technology. It solves the problem of insufficient rectification effect of the diffuser in existing water pumps. This utility model includes a pump cover, pump casing, volute, multi-stage impeller assembly, pump shaft, and bearing housing. The multi-stage impeller assembly is installed inside the pump casing and includes a diffuser and impeller body. The diffuser is an integrally formed structure and includes a front diffuser end and a rear diffuser end. A rear diffuser blade is formed on the front side of the rear diffuser end and is connected to the rear side of the front diffuser end. A rear diffuser flow channel is formed between the front and rear diffuser ends. A cavity is formed on the front side of the front diffuser end, and a mounting seat is formed inside the cavity. The impeller body is installed in the mounting seat. Several front diffuser blades are formed inside the front diffuser end, and several diffusion windows are opened on the outer surface of the front diffuser end. A front diffuser flow channel is opened inside the front diffuser end and is connected to the diffusion windows. This utility model has the advantages of high structural strength and good diffuser rectification effect.
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