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

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    Horizontal multistage centrifugal pump wear-resistant type MD for mining
    Horizontal multistage centrifugal pump wear-resistant type MD for mining
    Horizontal multistage centrifugal pump wear-resistant type MD for mining
    Horizontal multistage centrifugal pump wear-resistant type MD for mining
    Horizontal multistage centrifugal pump wear-resistant type MD for mining
    Horizontal multistage centrifugal pump wear-resistant type MD for mining
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    • Horizontal multistage centrifugal pump wear-resistant type MD for mining
    • Horizontal multistage centrifugal pump wear-resistant type MD for mining
    • Horizontal multistage centrifugal pump wear-resistant type MD for mining
    • Horizontal multistage centrifugal pump wear-resistant type MD for mining
    • Horizontal multistage centrifugal pump wear-resistant type MD for mining
    • Horizontal multistage centrifugal pump wear-resistant type MD for mining

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    Mining Multistage Pump

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    Pump

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    Horizontal multistage centrifugal pump wear-resistant type MD for mining

    Flow: 3.75- 1352m³/h

    Lifting height: 50-1810m

    Efficiency: 33%-83%

    Pump weight: 79-3752kg

    Motor power: 3.1-1120kw

    Cavitation margin: 2.0-7.0m

    Price: 1.59-257,000

     

    It is used to transport neutral mineral water with a solid particle content not exceeding 1.5% (particle size less than 0.5 mm) and other similar wastewater. The temperature of the transported medium does not exceed 80°C, suitable for steel factories, mine drainage, wastewater transport, among others.

    +86 0731-88192288

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    info@cipump.com

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    Product Description Product Specifications Why Choose Us? FAQ

    Product description

    The wear-resistant multistage centrifugal pump for mining model MD is a single suction segmented multistage centrifugal pump, with passages made of high-alloy wear-resistant cast iron or high-quality wear-resistant ductile iron. It is suitable for transporting media with certain solid particles and is one of the most widely used equipment in steel plants, mine drainage, wastewater discharge, and other fields. Especially in coal mines and other deep underground well projects, where groundwater inflow can cause safety accidents and threaten the personal and property safety of users. Our wear-resistant multistage pump model MD is a high-lift multistage water pump, with a maximum lift limit of up to 1800 meters. Additionally, it features high efficiency, a wide performance range, safe and stable operation, low noise level, long service life, and easy installation and maintenance, fully meeting the needs of various mining users. We can also equip explosion-proof motors according to the type of mineral and the conditions of gases and hazardous substances on site, customizing integrated explosion-proof motor multistage mining pumps to ensure the personal and property safety of users. Currently, all models of the MD and MD(P) self-balancing multistage mining pump series have obtained mining and coal safety certifications, guaranteeing quality.

     

    Wear-resistant multistage centrifugal pump for mining model MD from Changsha Zhonglian Pump Industry

     

         Image 1   Scope of application of the wear-resistant multistage pump for mining model MD

             It is used for mine drainage and transportation of neutral media with solid particle content not exceeding 1.5% (particle diameter less than 1.3 mm), temperature between 0 and 80 °C, and medium density less than 1.02×10³ kg/m³, as well as other wastewater with similar physical and chemical properties. It is widely applicable in steel plants, mine drainage, and wastewater transportation.

     

    On-site use of wear-resistant multistage pump for mining

           Image 1   Structural diagram and technical characteristics of the wear-resistant multistage pump for mining model MD

     

     

    Structural diagram of the wear-resistant multistage centrifugal pump for mining model MD

     

           Image 1   Structural description of the wear-resistant multistage pump for mining model MD

    　1. The wear-resistant multistage pump for mining model MD is a single suction segmented centrifugal pump. The inlet can be oriented horizontally or vertically upwards. The inlet, middle, and outlet sections of the pump body are connected by tie bolts forming a unit. Both ends have bearing components, and the number of stages is selected according to the required lift;

    2. The rotor part of the wear-resistant multistage pump for mining model MD mainly consists of the shaft and the parts mounted on it, such as the impeller, shaft sleeve, and balance disk. The number of impellers depends on the number of pump stages. The shaft parts are fixed to the shaft by keys and nuts to form a unit;

    3. The complete rotor of the wear-resistant multistage pump for mining model MD is supported by ball or sliding bearings at both ends. The bearing type varies by model; none supports axial force, which is balanced by the balance disk. Additionally, a wear indicator for the balance disk is installed at the pump end to monitor its wear;

    4. The sealing surfaces between the inlet, middle, and outlet sections of the wear-resistant multistage pump for mining model MD are sealed with sealing adhesive or O-rings. The rotor part and the fixed part are sealed with sealing rings and guide sleeves. When the wear of these components affects pump performance, they should be replaced promptly;

    5. The wear-resistant multistage pump for mining model MD uses two types of shaft sealing: mechanical seal and packing seal. When packing is used, the packing ring position must be correct and the tension appropriate to allow liquid to leak drop by drop. The sealing elements are installed in the sealing chamber, where pressurized water is introduced to act as a water seal, cooling, or lubrication;

    6. During operation, the rotor of the wear-resistant multistage pump for mining model MD can move axially within the pump body. The horizontal type D multistage pump generally uses ball bearings with dry lubrication. Models DVDG85-67 and D/DG155-67 can use sliding bearings with light oil lubrication or ball bearings with dry lubrication.

    7. The wear-resistant multistage pump for mining model MD is directly driven by the motor through an elastic coupling. From the motor direction, the pump rotates clockwise. The standard motor is from the Y3 series, and in environments with flammable and explosive gases, the explosion-proof motor from the YB3 series is used.

    8. If you have special requirements regarding the materials and structure of the wear-resistant multistage pump for mining model MD, you can consult us. Our professional technical staff can customize the passage material, configuration, inlet and outlet direction of the pump according to your needs to ensure it meets your working conditions.

     

            Image 1   Technical characteristics of the wear-resistant multistage pump for mining model MD

    1. High efficiency and energy saving: We focus on specialized production, with unique methods in model selection, mold manufacturing, and casting of hydraulic components for the horizontal type D multistage pump. All passage components are made by precision casting, ensuring dimensions and finish of the passages. This exceeds the average performance of common multistage pumps on the market by more than 2%, achieving a good energy-saving effect;

    2. Advanced equipment and processes: To ensure the assembly performance of the horizontal type D multistage pump, we import advanced foreign parts cleaning equipment. Each part is carefully cleaned before final assembly. In addition to normal material tests, hydrostatic tests, and static balance tests, all rotor components of pumps with 6 or more stages are inspected after partial assembly to control shaft vibration within 0.05 mm, then dynamic balance test G2.5 is performed. After total assembly, shaft and coupling vibration and axial displacement are rechecked to ensure assembly quality;

    3. Unique structure: The horizontal type D multistage pump has an O-type sealing ring installed between the balance ring and the pump coupling surface to prevent high-pressure water from entering the balance chamber, affecting the balance disk, reducing its wear, and prolonging product life. For pumps with nominal diameter DN200 or above, a wear indicator for the balance disk is installed at the shaft end to monitor wear of the disk or balance ring and allow timely replacement, ensuring normal equipment operation;

    4. Good surface quality: horizontal multistage pump type D It uses a precision mold casting process and an automatic spraying machine for painting, with good surface quality and aesthetic appearance.

     

           Image 1   Precautions for the use of the wear-resistant multistage pump type MD for mining

    The multistage pump must operate under design conditions. If the lift height exceeds the specified range for a prolonged time, it will affect the safety of the entire piping system and be uneconomical. If the lift height is below the specified range, that is, the multistage pump is used under high flow and low lift conditions, especially for multistage pumps with low rotational speed, the shaft power will increase rapidly, causing motor overload and possibly burning it out easily; when the flow increases, the maximum allowable suction height for the pump decreases with the increase in flow, which can cause cavitation in the pump, greatly affecting its performance and reducing economic efficiency. Therefore, the multistage pump is not allowed to operate below the specified conditions.

     

    Production process

     

     

    Our company is a veteran manufacturer of multistage pumps for mining, independently established after the restructuring of the former Zhonglian Pump Industry, with more than 30 years of experience in research, development, and manufacturing of multistage pumps. The company has strong technical strength, extensive production experience, comprehensive inspection methods, a professional design and research team, and technical production personnel. It has now become a key national high-tech enterprise in multistage pump equipment. All produced multistage pumps use computer design and optimization, with stable and reliable quality and good anti-cavitation performance.

    Product parameters

    Product Parameters

    Description of the wear-resistant multistage centrifugal pump model type MD for mining

     

     

     

    Performance parameters of the wear-resistant multistage pump type MD for mining (these data are for reference only, please take the actual order as the standard!)

     

    D/DG/DF/MD6-25

    D/DG/DF/MD6-50

    D/DG/DF/MD6-80

    D/DG/DF/MD12-25

    D/DG/DF/MD12-50

    D/DG/DF/MD12-80

    D/DG/DF/MD25-30

    D/DG/DF/MD25-50

    D/DG/DF/MD25-80

    D/DG/DF/MD46-30

    D/DG/DF/MD46-50

    D/DG/DF/MD46-80

    D/DG/DF/MD85-45

    D/DG/DF/MD85-67

    D/DG/DF/MD85-80

    D/DG/DF/MD85-100

    D/DG/DF/MD120-50

    D/DG/DF/MD120-100

    D/DG/DF/MD150-30

    D/DG/DF/MD150-50

    D/DG/DF/MD150-80

    D/DG/DF/MD150-100

    D/DG/DF/MD155-30

    D/DG/DF/MD155-67

    D/DG/DF/MD200-50

    D/DG/DF/MD200-100

    D/DG/DF/MD200-150

    D/DG/DF/MD210-70

    D/DG/DF/MD280-43

    D/DG/DF/MD280-65

    D/DG/DF/MD280-95

    D/DG/DF/MD280-100

    D/DG/DF/MD300-45

    D/DG/DF/MD360-40

    D/DG/DF/MD360-60

    D/DG/DF/MD360-95

    D/DG/DF/MD450-60

    D/DG/DF/MD450-95

    D/DG/DF/MD500-57

    D/DG/DF/MD550-50

    D/DG/DF/MD580-60

    D/DG/DF/MD640-80

    D/DG/DF/MD720-60

    D/DG/DF/MD1100-85

    For more performance parameters of the wear-resistant multistage pump type MD, please download the intelligent selection software on the pump selection page or call: 0731-88192288 for more information.

    Changsha Zhonglian Pump Industry Co., Ltd.

    Why Choose Us?

    Changsha Zhonglian Pump Industry Co., Ltd. was established in 1989, following the reform of the Changsha Water Pump Factory. It is a national high-tech comprehensive enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Stock Exchange on December 31, 2019, with the abbreviated name "Zhonglian Pump Industry" and stock code: 600275HN. It is currently a key enterprise in China's centrifugal pump industry and one of the leading domestic manufacturers of multi-stage pumps, headquartered in Changsha, Hunan, a historical and cultural city in China.

    Changsha Zhonglian Pump Industry Co., Ltd.
    Changsha Zhonglian Pump Industry Co., Ltd.

    FAQ

    Q

    What products do you mainly produce?

    A

    Zoomlion Pump Industry manufactures various large industrial centrifugal pumps. The main products include: self-balancing multistage pumps, multistage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condenser pumps, and more.

    Q

    Can you help me choose a model?

    A

    Of course! If the water pump model is not selected accurately, it can cause significant problems. After you take it back, it might be either too small to meet the usage requirements or too large, resulting in higher electricity and fuel costs, increasing the operating expenses.

    Q

    Why is the price quotation so slow?

    A

    Because centrifugal pumps are non-standard custom products with many models and a wide price range. Even for the same model, the price varies greatly depending on the materials and configurations used. Taking the most common pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clearly confirm the relevant information to provide you with an accurate price. Normally, if you provide comprehensive information, we can quote within 5 minutes.

    Q

    What information should I provide when I need a quote?

    A

    Usually, if you want to get an accurate quote, it is recommended that you provide us with the following information: pump flow rate, head, on-site operating voltage, frequency, temperature of the conveyed liquid, pH value, solid particle content, on-site installation conditions (horizontal or vertical installation), and other related details. If you are not very familiar with these, it’s okay; our sales manager will assist you in determining them.

    Q

    Do you have centrifugal pumps in stock?

    A

    There are many models and configurations of centrifugal pumps. Except for a small number of commonly used standard models that are in stock, the vast majority of models and configurations are not stocked and are customized products. We need to first select the pump based on your site conditions such as flow rate, head, medium temperature, pH value, and installation conditions. After determining the pump model and configuration, we can then place an order with the workshop for production.

    Q

    What is your usual delivery time?

    A

    Models in stock can be shipped by the next day at the latest. Others are custom-made, and depending on the product size and specific project conditions, the delivery time is generally between 7-90 days. Please consult our sales manager for details: 0731-88632200 。

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