Double-suction full-symmetrical multi-stage pump

By symmetrically arranging the guide vortex chamber and centrifugal rotating chamber, using a helical tangential design and an integrally formed impeller, the structural asymmetry and dynamic balance problems of the double-suction pump are solved, achieving efficient and stable liquid transportation, suitable for high-head and high-flow-rate conditions.

CN224380118UActive Publication Date: 2026-06-19WENLING HANDE PUMP IND CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Utility models(China)
Current Assignee / Owner
WENLING HANDE PUMP IND CO LTD
Filing Date
2025-06-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing double-suction pumps have technical bottlenecks in terms of structural symmetry, axial force balance, rational flow channel layout, and impeller dynamic balance, leading to problems such as vibration, noise, and leakage, making it difficult to meet the requirements for efficient and stable operation.

Method used

It adopts a double-suction fully symmetrical multistage pump design, including symmetrically arranged guide swirl chambers and centrifugal rotating chambers, helically tangentially arranged guide swirl chambers and swirl channels, and an integrally formed double-suction impeller, which optimizes the liquid flow path and axial force balance and enhances sealing performance.

Benefits of technology

It improves the pump's operational stability and efficiency, reduces vibration and noise, enhances equipment safety and fluid transport capacity, and is suitable for high-head, high-flow-rate applications.

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Abstract

The utility model discloses a kind of double-suction full-symmetry multistage pumps, including pump shell, shaft and the double-suction impeller being set in pump shell, pump shell top surface is equipped with top cover, two sides are equipped with liquid inlet flange and liquid outlet flange, pump shell inside is equipped with guide spin cavity, centrifugal rotation cavity and cyclone pass, guide spin cavity is communicated with liquid inlet flange, cyclone pass is communicated with liquid outlet flange, guide spin cavity and centrifugal rotation cavity are symmetrically arranged and are arranged in pairs. Double-suction impeller includes integrally-formed rotating seat and the spiral blade being set in its two sides, blade outside connects spin cover, and spin cover is equipped with liquid inlet. The multistage pump structure is symmetrical, liquid can enter simultaneously by two sides and be evenly distributed to double-side blade, axial force can be automatically offset when pump operates, with the advantages of flow passage optimization, high efficiency, good dynamic balance, stable operation, suitable for large-flow high-lift delivery scene.
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