Modular Drive Side Liner for Slurry Pump Wear Control
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Solution Overview
Problem
Centrifugal slurry pumps experience significant wear due to the abrasive nature of slurries, leading to reduced operational life of components like impellers and liners, particularly at the side-liners where slurry migration and vortex creation cause localized wear and premature replacement.
Innovation Solution
The design includes a drive side liner with removable inner and outer liner portions that can be aligned and secured without compromising seals, allowing for independent adjustment and replacement of wear-prone outer sections while maintaining the inner seal, and a tool for facilitating the removal and installation of the outer liner portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive side liner is made as a single integrated component, then the structural integrity and sealing are improved, but the wear resistance and operational life are reduced due to inability to replace worn sections
Solution Approach 1:
The drive side liner is divided into multiple separable sections (inner liner portion and outer liner portion) that can be independently removed and replaced. This segmentation allows the worn outer section to be replaced without affecting the inner seal portion, thereby extending operational life while maintaining sealing integrity through the modular design.
2Ease of repair
If the outer liner portion is made removable and replaceable, then the operational life and maintenance flexibility are improved, but the complexity of the sealing system increases
Solution Approach 1:
The liner is segmented into removable inner and outer portions with defined interfaces. This segmentation enables independent replacement of the outer wear-prone section while maintaining the inner seal portion, improving maintenance flexibility without significantly increasing overall system complexity.
Solution Approach 2:
Different portions of the liner are designed with different properties: the outer portion is designed for ease of replacement and wear resistance, while the inner portion maintains sealing integrity. This local differentiation optimizes each section for its specific function, balancing maintenance ease with sealing reliability.
3Reliability
If the inner liner portion remains fixed and sealed, then the sealing integrity is maintained, but the ability to access and maintain the seal increases difficulty
Solution Approach 1:
The liner is segmented such that the outer portion can be removed independently while the inner sealed portion remains in place. This segmentation provides direct access to the seal area for maintenance activities without compromising sealing integrity, as the inner portion can be accessed through the removed outer section.
Solution Approach 2:
The outer liner portion is extracted or removed from the assembly, providing direct access to the inner seal portion. This extraction allows maintenance personnel to service the seal without removing the entire liner assembly, improving maintenance accessibility while the inner portion remains sealed and protected.
Data Source
AI summary
There is provided a drive side liner for a centrifugal slurry pump, wherein the centrifugal slurry pump includes an outer casing, a main liner and an impeller driven by a drive shaft, wherein the main liner and drive side liner are housed within the outer casing of the centrifugal slurry pump, the drive side liner including: an inner liner portion including a central aperture configured to receive the drive shaft, the drive side liner further including an outer liner portion arranged to surround the inner liner portion, wherein the inner liner portion and the outer liner portion are each configured to removably engage with one another and the outer casing.