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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    Replacement Cycle and Selection & Maintenance Guide for High-Temperature Boiler Circulating Water Pumps

    Replacement Cycle and Selection & Maintenance Guide for High-Temperature Boiler Circulating Water Pumps

    In industrial production, high-temperature boiler circulating water pumps serve as the core power equipment for boilers, and their reliable operation directly affects process continuity and product quality. As a benchmark enterprise in domestic industrial pump manufacturing, Changsha Zoomlion Pump Industry has developed scientifically sound replacement-cycle plans tailored to different operating conditions, in accordance with GB/T 3216-2016 “Efficiency Grades and Test Methods for Centrifugal Pumps” and the ISO 9906 international standard.

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    2026-03

    Standardized Installation Technical Specification for Shafts and Impellers of Double-Suction Pumps (GB/T 3216-2016)

    Standardized Installation Technical Specification for Shafts and Impellers of Double-Suction Pumps (GB/T 3216-2016)

    Drawing on extensive engineering experience, the technical team at Changsha Zoomlion Pump Industry has developed the “Standardized Installation Technical Specification for the Shaft and Impeller of Centrifugal Double-Suction Pumps.” As a core piece of energy-efficient fluid-handling equipment, centrifugal double-suction pumps are widely used in water conservancy, chemical processing, power generation, and other sectors. The installation accuracy of the pump’s key components—the shaft and impeller—directly affects the pump’s operational efficiency, stability, and service life. The following procedure is formulated in accordance with the national standard GB/T 3216-2016 and based on many years of engineering practice at Changsha Zoomlion Pump Industry, with the aim of standardizing the installation process for the shaft and impeller.

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    2026-03

    Solutions to Prevent Failure of Multi-Stage Pump Mechanical Seals

    Solutions to Prevent Failure of Multi-Stage Pump Mechanical Seals

    As the core component for shaft-end sealing in multistage pumps, mechanical seals not only lead to medium leakage and production interruptions when they fail frequently, but also increase the costs associated with spare part replacement and maintenance operations. Drawing on thousands of field failure analysis cases, Changsha Zoomlion Pump Industry has developed a comprehensive solution for multistage pump mechanical seals that emphasizes “precise selection, standardized installation, optimized operating conditions, and a closed-loop maintenance process.” This approach fundamentally extends the service life of mechanical seals and reduces the likelihood of failure.

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    13

    2026-03

    What causes a multi-stage pump mechanical seal to fail within less than a month?

    What causes a multi-stage pump mechanical seal to fail within less than a month?

    During the operation of multistage pumps, mechanical seals often fail—exhibiting leakage and wear—within just one month, making this a frequent and troublesome issue for industrial enterprises. Not only does it lead to shutdowns for maintenance and production interruptions, but it also significantly increases the costs associated with component replacement and ongoing operations. Drawing on years of experience in the R&D, manufacturing, and field service of multistage pumps, Changsha Zoomlion Pump Industry has identified five core reasons behind the rapid failure of multistage pump mechanical seals. By taking into account actual operating conditions, they have developed targeted solutions to help users mitigate risks at their root.

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    12

    2026-03

    Do multi-stage mining pumps have a short service life and aren’t very durable? Zhonglian Pump Industry will tell you where the root cause lies.

    Do multi-stage mining pumps have a short service life and aren’t very durable? Zhonglian Pump Industry will tell you where the root cause lies.

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    10

    2026-03

    What causes backflow in wear-resistant multistage centrifugal drainage pumps used in coal mines?

    What causes backflow in wear-resistant multistage centrifugal drainage pumps used in coal mines?

    As a critical core piece of equipment for underground mine drainage and tailings transport, wear‑resistant multistage centrifugal drainage pumps used in coal mines are directly linked to safe mine production and the stable operation of the drainage system. Backflow—where the working medium leaks backward from the pump outlet to the inlet or circulates within the pump cavity—is a typical failure mode for this type of pump under the high-sand-content, high‑abrasion, and high‑pressure conditions prevalent in coal mines. Due to the high sand content and poor water quality in underground mine environments, backflow not only leads to a reduction in the pump’s actual discharge flow and an increase in energy consumption by 15%–30%, but also accelerates wear and cavitation in key flow components such as the impeller and sealing rings, shortening component service life by more than 50%. What’s more, backflow can trigger excessive pump vibration, pipeline surges, and even complete failure of the drainage system, posing significant risks to mine safety. In this article, Changsha Zoomlion Pump Industry, a manufacturer of mining multistage pumps, will draw on its practical experience in the operation and maintenance of underground mine drainage pumps to analyze the root causes of backflow in wear‑resistant multistage centrifugal drainage pumps used in coal mines, helping mining enterprises address issues at their source and ensuring the continuous, stable operation of their drainage systems.

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    09

    2026-03

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