Title: Design of bearings load uniform structure and study on load uniform effect of submersible screw pump

Authors: Rui Dong; Zhiqiang Wang; Beilin Han; Salvinder Singh Karam Singh; Chenxu Chen; Tianxing Tu

Addresses: School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 10336, China ' School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 10336, China ' School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 10336, China ' Department of Mechanical and Manufacturing Engineering, Universiti Kebangsaan Malaysia, Bangi, 43600, Malaysia ' School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 10336, China ' School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 10336, China

Abstract: The submersible screw pump (SSP) is widely utilised due to its low cost, high-energy efficiency, and exceptional pumping performance. However, under high-speed and heavy-load operating conditions, key components such as bearings experience significant axial loads, which lead to reduced bearing lifespan and reliability. To enhance bearing lifespan and reliability, this study combines both simulation and experimental approaches to design a multi-stage bearing load uniform structure. Simulation analysis was performed on components such as disc springs. The results indicate that the multi-stage bearing load uniform structure can effectively uniform axial loads. The study also identifies that factors, such as the gap between the disc spring and the bearing as well as assembly gaps, negatively impact load uniformity. Therefore, this research offers an effective design strategy for the structural optimisation of SSPs, contributing to improved bearing group lifespan and reliability.

Keywords: submersible screw pump; bearings load uniform structure; multi-stage bearings; load uniform effect.

DOI: 10.1504/IJHM.2025.150805

International Journal of Hydromechatronics, 2025 Vol.8 No.4, pp.387 - 411

Received: 07 Apr 2025
Accepted: 15 Jul 2025
Published online: 23 Dec 2025 *

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