Rotor stabilizing device and self-balancing multi-stage centrifugal pump thereof

By introducing a rotor stabilizing device into a multi-stage centrifugal pump, and utilizing a combination of elastic elements and bearings to absorb minute displacements of the pump shaft, the stability problem caused by axial displacement of the pump shaft is solved, thereby improving the pump's operational stability and reliability.

CN224550353UActive Publication Date: 2026-07-24GUANGZHOU XINHENG PUMP MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU XINHENG PUMP MFG
Filing Date
2025-08-05
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

During operation, multistage centrifugal pumps may experience slight axial displacement of the pump shaft due to factors such as fluid pressure fluctuations, hydraulic imbalances, or mechanical vibrations. This can lead to increased bearing wear, mechanical seal failure, and increased pump body vibration, affecting stability and service life.

Method used

A rotor stabilizing device is adopted, including a stabilizing groove in the first housing and a rotor stabilizing assembly connected thereto. The assembly consists of a first elastic element, a second elastic element, and a first bearing. The first bearing is sleeved on the pump shaft. The pump shaft’s slight displacement is absorbed by the compression and reset mechanism of the elastic element, ensuring the stability of the pump shaft in its initial position.

Benefits of technology

It effectively absorbs the slight movement of the pump shaft caused by pressure fluctuations under operating conditions, alleviates axial displacement, improves the operational stability and reliability of multi-stage centrifugal pumps, and extends the service life of bearings and pump shafts.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of pump discloses a rotor stabilizing device and self -balancing multistage centrifugal pump thereof, including first box and rotor stabilizing component, is equipped with the stable groove in first box, and rotor stabilizing component connects in stable groove, and rotor stabilizing component includes first elastic part, second elastic part and is used for the first bearing of sleeve joint in pump shaft, and first bearing is located between first elastic part and second elastic part, and one end of first elastic part and second elastic part respectively with first bearing abut, and the other end of first elastic part and second elastic part is connected in stable groove respectively. Rotor stabilizing device and self -balancing multistage centrifugal pump thereof of the utility model, two -way absorption pump shaft trace amount displacement, automatic reset and do not influence the stable structure of pump shaft normal rotation, to promote multistage centrifugal pump under the operation stability and reliability of complex working condition.
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