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

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    Mining Main Drainage Pump

    Publication Date:

    2025-09-05

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    In coal mining production and processing, water pumps are essential and widely used equipment. Typically, multi-stage centrifugal pumps of the D, MD, and MD(P) series are selected for mine applications. The main difference between the D and MD series lies in their material composition, with the latter offering superior wear resistance. Meanwhile, the MD(P) pump is a self-balancing, multi-stage centrifugal water pump specifically designed for coal mines. In addition to its high-head capability, this model also boasts exceptional durability against abrasion.

    The D-type multi-stage pump for coal mines is a single-suction, multi-stage, sectional centrifugal water pump, designed for conveying clean water free of solid particles or liquids with physical and chemical properties similar to water. The temperature of the medium being pumped ranges from 0°C to +80°C. Type D Multistage Centrifugal Pump It boasts a wide flow and head range, along with high efficiency, making it well-suited to meet the drainage needs of mining operations. The pump features a relatively flat head characteristic curve—starting at a high initial head—which ensures stable operation. Additionally, its power consumption remains low even at zero flow, facilitating smooth motor startup. Combined with a flat efficiency curve, this design significantly broadens the pump’s effective operating range for industrial applications.

    Type D Multistage Centrifugal Pump

    ↑Click the image to learn about the bed Type D Multistage Centrifugal Pump Product details and Price Information ↑

            MD-Type Horizontal Wear-Resistant Multistage Pump for Coal Mines This is a single-suction, multistage, segment-type wear-resistant centrifugal pump designed specifically for coal mines. This type of water pump is ideal for conveying neutral mine water containing solid particles no more than 1.5% (with particle size smaller than 0.5 mm) as well as other similar wastewater. The temperature of the medium being pumped should not exceed 80°C. These pumps are suitable for applications such as steel plants, mine drainage systems, and sewage transportation. The MD series multistage pumps utilize a hydraulic model that aligns with the nation’s recommended standards for high-efficiency and energy-saving products. Moreover, their filtration components and easily worn parts are crafted from advanced, highly wear-resistant materials, ensuring exceptional durability. To further enhance the pump’s suction performance and optimize its hydraulic design, the pump incorporates the theoretical principles of two-phase flow dynamics. This innovative approach not only boosts the pump’s suction lift but also significantly reduces impact-induced wear caused by the mixture of coal and water inside the pump. As a result, the pump achieves more efficient energy conversion, leading to improved overall efficiency and extended service life. Additionally, all flow-through components of the pump are manufactured using precision casting techniques, guaranteeing precise dimensional accuracy and smooth internal surfaces. This meticulous craftsmanship contributes to outstanding energy-saving performance. Notably, this pump model has successfully obtained national coal safety certification and bears the exclusive "KA" and "MA" coal safety marks designated for mining applications.

    ↑Click the image to learn more MD-Type Horizontal Wear-Resistant Multistage Pump for Coal Mines Product details and Price Information ↑

            MD(P)-Type Self-Balancing High-Pressure Wear-Resistant Multistage Centrifugal Pump for Coal Mines This is a self-balancing, high-head multistage pump designed specifically for coal mines, improved upon the foundation of the D-type pump. It features innovative structural reforms that eliminate the traditional axial force balancing mechanism and the balance disc assembly commonly found in multi-stage centrifugal pumps. As a result, it represents an excellent upgrade and replacement for both D- and DG-type multistage centrifugal pumps. This product has successfully passed the national coal safety certification and proudly bears the exclusive "KA" and "MA" coal safety marks, certified for mining applications. It is ideally suited for conveying medium-sized mine water and other similar wastewater containing particles no larger than 1.3 mm with a particle content of up to 1.5%, and operating within a temperature range of -20°C to 80°C. In addition to its exceptional wear resistance, this pump also boasts high efficiency, excellent cavitation performance, stable and reliable operation, extended service life, and the ability to deliver high head at lower rotational speeds. Featuring a unique self-balancing design, this pump adopts a horizontal, multi-stage, highly efficient, and energy-saving configuration. Its impellers are symmetrically arranged, eliminating the need for a conventional balance disc system. As a result, the pump rotor experiences no axial movement, ensuring that the flow path remains perfectly aligned at all times—keeping the pump consistently operating within its optimal efficiency range. This design delivers a remarkably flat efficiency curve, enabling the pump to run smoothly and reliably for up to 8,000 uninterrupted hours without failure. Moreover, the pump incorporates an advanced modular design, making its impellers, rotating components, and other interchangeable parts highly compatible and easily replaceable. Users can choose from a variety of materials, including HT200, QT600, ZG, 304, 304L, 316L, 317L, 904L, CD4, and other options tailored to specific application needs.

    ↑Click the image to learn more   MD(P)-Type Self-Balancing High-Pressure Wear-Resistant Multistage Centrifugal Pump for Coal Mines Product details and Price Information ↑

            Product features of wear-resistant multistage centrifugal pumps for coal mines:

    1. The hydraulic model features advanced design, high efficiency, and a wide performance range.

    2. The pump operates smoothly with low noise.

    3. The shaft seal employs either a soft packing seal or a mechanical seal, ensuring safe and reliable sealing with a simple design that allows for quick and convenient maintenance.

    4. The shaft features a fully sealed design, ensuring it remains free from contact with the medium, preventing corrosion and guaranteeing a long service life.

     

            Standard for Wear-Resistant Multistage Centrifugal Pumps Used in Coal Mines:

    GB/T5657-95 "Technical Specifications for Centrifugal Pumps (Class III)"

    JB/T1051-93 "Type and Basic Parameters of Multistage Clear Water Centrifugal Pumps"

    GB/T3216-2005 "Hydraulic Performance Acceptance Tests for Rotary Power Pumps—Class 1 and Class 2"

    MT114-2005 《Coal Mine Multi-stage Centrifugal Pumps》

     

    The above three models Multistage pump for coal mines When the physicochemical properties of the liquid being conveyed pose special requirements, the pump material can also be customized according to specific user needs. By modifying the pump material (or the material of the pump’s wetted components), adjusting the sealing configuration, and incorporating an additional cooling system, the pump can effectively handle hot liquids, oils, corrosive media, or even abrasive fluids. This ensures that the pump is perfectly matched to the physical and chemical characteristics of the liquid being transported. Notably, after material changes, the pump’s performance parameters and installation dimensions remain essentially unchanged compared to the original design.

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