Changsha Zoomlian Pump Co., Ltd. 长沙中联泵业股份有限公司

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    Selection and Maintenance Guide for Multistage Pumps in Mining: Core Technology Analysis of Mine Drainage Equipment

    Publication Date:

    2025-09-02

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    The multistage pump for mining is a key fluid transportation device in mining production, specially designed for high lift and large flow conditions. Through the series cooperation of multiple impellers, it gradually converts the mechanical energy of the driving device into the pressure energy and kinetic energy of the liquid, achieving the lifting and long-distance transportation of media such as mine water and slurry. This segmented centrifugal pump is widely used in drainage systems of metal mines, non-metal mines, and coal mines, and is one of the core devices ensuring safe mining production.

     

    Multistage Pump for Mining

     

    1. Working Principle and Structural Features

    The mining multistage pump adopts a horizontal single-suction segmented structure, formed by the sequential series connection of multiple impellers and guide vanes. " Stepwise Pressure Boosting " Effect. The liquid enters the first-stage impeller from the suction section to gain energy, then is guided by the guide vanes to the next-stage impeller for further pressurization, and finally outputs high-pressure liquid through the discharge section. This structural design enables high lift output in a compact space, with a single-stage lift reaching 30 over meters, and the total lift can be flexibly adjusted according to the number of stages.

     

    2. Core Advantages Analysis

    Excellent Performance: Adopting the nationally recommended high-efficiency hydraulic model, combined with CFD (Computational Fluid Dynamics) optimized flow channel design, efficiency is improved by 8%-15% , significantly reducing mining energy consumption.

    Strong Durability: Flow-through parts are made of high-chromium cast iron or stainless steel 304/316 materials, where the wear resistance of high-chromium cast iron impellers is more than 5 times that of ordinary cast iron, capable of withstanding slurry erosion with solid particle content ≤ 1.5% .

    Safe and Reliable: All mining models have passed coal safety MA and mine safety KA certifications. Explosion-proof equipment complies with GB3836 standards, enabling safe operation in hazardous environments containing gas.

    Intelligent and Convenient: Modern mining multistage pumps generally integrate pressure and flow sensors, achieving real-time condition monitoring and fault warning through PLC systems, reducing manual operation and maintenance costs.

     

    3. Daily Maintenance Points for Mining Multistage Pumps

    Regular Inspection: Check wear of impellers, shaft sleeves, and other vulnerable parts every 1000 hours of operation to ensure sealing clearance does not exceed limits. 0.5mm。

    Lubrication Management: Replace special lubricating oil regularly according to MT/T114-2005 standards to maintain sufficient lubrication of the bearing system and avoid high-temperature operation.

    Impurity Cleaning: Clean the inlet filter screen and remove mineral slag from the flow channel weekly to prevent cavitation of impellers or pipeline blockage caused by solid particles.

     

    The stable operation of mining multistage pumps is directly related to mining production safety and economic benefits. Through scientific selection, standardized maintenance, and technological upgrades, the equipment lifespan can be extended to over 8000 hours, while significantly reducing energy consumption costs. Users are advised to consult professional manufacturers based on specific working conditions to develop personalized equipment solutions, ensuring efficient operation while meeting mining safety standards.

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