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

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    Sharing Development Opportunities, Zoomlion Pump Makes Appearance at China-Africa Economic and Trade Expo

    2025-06-18

    Sharing Development Opportunities, Zoomlion Pump Makes Appearance at China-Africa Economic and Trade Expo

    The year 2025 marks the 25th anniversary of the Forum on China-Africa Cooperation (FOCAC) and is also the inaugural year for implementing the outcomes of the 2024 FOCAC Beijing Summit. This year commemorates the 25th anniversary of FOCAC, under whose guidance China-Africa relations have achieved leapfrog development. China has established strategic partnerships with all 53 African countries with diplomatic ties, trade volume between China and Africa has increased nearly 30 times, and Chinese investment in Africa has grown nearly 100 times, bringing tangible benefits to the peoples of China and Africa.

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    Technical Solution for Difficult Startup of MDP-Type Wear-Resistant Self-Balancing Multistage Mine Pumps

    Technical Solution for Difficult Startup of MDP-Type Wear-Resistant Self-Balancing Multistage Mine Pumps

    The MDP-type mining wear-resistant self-balancing multistage pump is difficult to start, which poses a serious threat to mine safety in the mining industry. If underground water inflows are not promptly drained, the mine tunnel faces a significant risk of collapse; therefore, timely troubleshooting is crucial. In this article, Changsha Zhonglian Pump Industry, a manufacturer of multistage pumps, systematically identifies and analyzes the root causes of such failures at the system level, providing valuable guidance for end-user organizations.

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    24

    2026-04

    Names and Functions of Core Components of Horizontal Multistage Pumps

    Names and Functions of Core Components of Horizontal Multistage Pumps

    As a core piece of equipment for industrial fluid conveyance, the horizontal multistage pump relies on its component systems to ensure efficient and stable operation. In the following article, Changsha Zhonglian Pump Industry, a leading manufacturer of multistage pumps, provides a systematic analysis—covering everything from the pump’s critical components to its auxiliary systems—of the key parts and their functions in high‑efficiency, energy‑saving multistage pumps, offering valuable guidance for organizations that require spare parts and replacement components.

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    24

    2026-04

    Technical Troubleshooting and Solutions for Multistage Centrifugal Pumps That Fail to Prime

    Technical Troubleshooting and Solutions for Multistage Centrifugal Pumps That Fail to Prime

    Drawing on years of service experience and a wealth of engineering case studies, the technical team at Changsha Zoomlion Pump Technology has compiled this troubleshooting guide. The guide provides a systematic analysis of the root causes of common faults across four major categories: the suction system, the power system, hydraulic parameters, and valve accessories. It is accompanied by standardized troubleshooting procedures and preventive maintenance recommendations, with the aim of providing users with a practical, replicable fault-diagnosis methodology and set of solutions for addressing issues where multistage centrifugal pumps fail to prime or draw water.

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    22

    2026-04

    Causes of Impeller Corrosion in High-Pressure Centrifugal Pumps and Engineering Mitigation Strategies

    Causes of Impeller Corrosion in High-Pressure Centrifugal Pumps and Engineering Mitigation Strategies

    In the industry, high-pressure centrifugal pumps are officially referred to as multistage centrifugal pumps. As the core flow-through component, the impeller’s corrosion directly affects the pump unit’s operational efficiency and reliability. Below, Changsha Zhonglian Pump Industry, a leading manufacturer of multistage pumps, analyzes, from a technical perspective, the primary causes of impeller corrosion in high-pressure centrifugal pumps and corresponding mitigation measures, for reference by operation and maintenance personnel at user organizations.

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    21

    2026-04

    Technical Diagnosis and Solutions for Abnormal Speed Fluctuations in Mining Multistage Pumps

    Technical Diagnosis and Solutions for Abnormal Speed Fluctuations in Mining Multistage Pumps

    As the core equipment of mine drainage and conveying systems, the operational efficiency and production continuity of mining multistage pumps are directly influenced by the stability of their rotational speed. Drawing on years of R&D experience in mining pumps, Changsha Zoomlion Pump Industry analyzes the root causes of speed instability and proposes technical solutions from four key dimensions: electrical systems, mechanical design, fluid control, and system management.

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    15

    2026-04

    Practical Procedures for Priming and Bleeding Air from a Wear-Resistant Multistage Centrifugal Pump Prior to Startup in Coal Mines (Specifically for Main Drainage Systems)

    Practical Procedures for Priming and Bleeding Air from a Wear-Resistant Multistage Centrifugal Pump Prior to Startup in Coal Mines (Specifically for Main Drainage Systems)

    The wear-resistant multistage centrifugal pump for underground coal mines is the core equipment of the main drainage system. The priming and air-venting procedures performed prior to startup directly determine whether the pump unit can reliably draw in water, and they are also critical operational and maintenance steps for preventing cavitation damage, excessive vibration, and dry-running wear. In view of the special operating conditions in underground coal mines—namely, explosion-proof requirements, deep head, and handling of particle-laden media—this paper presents, based on practical experience from the field, a set of straightforward, on-site methods for priming and venting wear-resistant multistage centrifugal pumps used in coal mining, tailored to the real-world operational needs of mine pumps.

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    14

    2026-04

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