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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    Causes of Cavitation in Centrifugal Pumps and Professional Prevention Strategies

    Causes of Cavitation in Centrifugal Pumps and Professional Prevention Strategies

    As a core fluid-handling device widely used in industries, agriculture, municipal water supply, and other fields, the stable operation of centrifugal pumps directly impacts production efficiency and equipment longevity. Cavitation, one of the most common failures in centrifugal pump operation, occurs when local pressure within the pump drops to the saturation vapor pressure corresponding to the liquid's temperature, causing the liquid to vaporize and form bubbles. These bubbles are then carried by the flow into high-pressure regions, where they collapse abruptly. This violent implosion generates intense shock waves, leading to impeller erosion, pump body vibration, and a sharp decline in efficiency—conditions that, if severe enough, can even result in equipment failure. In this article, technical engineers from Changsha Zhonglian Pump Industry, a leading manufacturer of centrifugal pumps, will systematically explain the causes of cavitation in centrifugal pumps and provide practical, implementable solutions for prevention and mitigation.

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    17

    2025-11

    Analysis of Why Centrifugal Pumps Fail to Draw Water

    Analysis of Why Centrifugal Pumps Fail to Draw Water

    In scenarios such as agricultural irrigation and industrial fluid transportation, centrifugal pumps are widely used due to their simple structure, convenient maintenance, and high efficiency. However, the common issue of "pump failure to lift water" frequently troubles users—disrupting production schedules and often leaving them feeling helpless as they struggle to pinpoint the problem. In fact, the inability of a centrifugal pump to draw water is not entirely mysterious; it’s usually linked to issues like air ingress, insufficient rotational speed, inadequate suction lift, pipeline resistance, or component wear and tear. To help users quickly identify the root cause, Zhonglian Pump Industry, a leading centrifugal pump manufacturer, shares practical insights based on real-world pump operation experiences, offering step-by-step guidance to resolve these challenges effectively.

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    14

    2025-11

    The Five Common Causes of Impurity Accumulation in the Packing Chamber of Horizontal Multistage Centrifugal Pumps and Corresponding Recommendations

    The Five Common Causes of Impurity Accumulation in the Packing Chamber of Horizontal Multistage Centrifugal Pumps and Corresponding Recommendations

    As a core fluid-handling device in industrial, agricultural, and municipal water supply systems, the horizontal multistage centrifugal pump is widely adopted due to its high efficiency, low energy consumption, and stable operation. However, during prolonged use, some users have reported that impurities tend to accumulate in the pump's stuffing box area. This not only accelerates seal wear and reduces volumetric efficiency but may also lead to leaks or even equipment failure. Therefore, gaining a deeper understanding of the mechanisms behind impurity entry into the stuffing box—and implementing targeted preventive measures—are crucial for ensuring the pump's reliability and extending its service life.

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    13

    2025-11

    Zhonglian Pump Industry's regulating tank lift pumps are perfectly suited for multi-condition sewage transportation, effectively addressing the challenge of blockages.

    Zhonglian Pump Industry's regulating tank lift pumps are perfectly suited for multi-condition sewage transportation, effectively addressing the challenge of blockages.

    The regulating tank lift pump is a critical piece of equipment in industrial wastewater pretreatment and municipal sewage treatment systems, designed to handle challenging operating conditions such as media containing suspended solids and intermittent transportation. Zhonglian Pump Industry has specifically developed a lift pump tailored for regulating tanks, which has already demonstrated stable performance in multiple projects.

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    12

    2025-11

    The Correct Operating Procedures and Precautions for Priming and Starting Multi-Stage Centrifugal Pumps

    The Correct Operating Procedures and Precautions for Priming and Starting Multi-Stage Centrifugal Pumps

    Multi-stage pumps are categorized into balanced-disc horizontal multi-stage pumps and self-balancing multi-stage pumps, representing an important type of centrifugal pump. Thanks to their high head and large flow characteristics, they are widely used in agricultural irrigation and water-lifting operations in hydraulic engineering projects. However, the working principle of centrifugal pumps dictates that the pump body and suction pipeline must be completely filled with liquid—any air trapped inside will prevent the pump from generating sufficient suction pressure, leading to the "air binding" phenomenon. This, in turn, can cause the pump to run dry, fail to deliver water, or even damage the bearings. Therefore, mastering scientific and efficient methods for priming and filling multi-stage pumps is crucial for ensuring stable equipment operation and enhancing the efficiency of engineering tasks. In this article, a multi-stage pump manufacturer will provide practical insights into the correct procedures and key considerations for priming and filling centrifugal (multi-stage) pumps, helping industry professionals perform these operations safely and effectively.

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    11

    2025-11

    Common Faults and Cause Analysis of Double-Suction Center-Opening Centrifugal Pumps

    Common Faults and Cause Analysis of Double-Suction Center-Opening Centrifugal Pumps

    The double-suction mid-open centrifugal pump, a versatile fluid-handling device, is widely used in fields such as water conservancy, municipal engineering, and industrial production. However, during prolonged operation, factors like installation, operator errors, and wear-and-tear can lead to common issues such as no water discharge, abnormal speed, and insufficient suction lift—problems that directly impact system efficiency. Below, technical engineers from Changsha Zhonglian Pump Industry, a leading centrifugal pump manufacturer, share their practical experience to provide a systematic analysis of typical faults and their underlying causes in double-suction mid-open centrifugal pumps, helping users quickly identify and resolve these issues.

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    10

    2025-11

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