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

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    Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    Multistage centrifugal pump for mining corrosion-resistant type (M)DF
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    • Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    • Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    • Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    • Multistage centrifugal pump for mining corrosion-resistant type (M)DF
    • Multistage centrifugal pump for mining corrosion-resistant type (M)DF

    Category:

    Mining Multistage Pump

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    Pump

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    Multistage centrifugal pump for mining corrosion-resistant type (M)DF

    Flow: 3.69-1349m³/h

    Lift height: 49.1-1800m

    Efficiency: 33%-83%

    Pump weight: 77-3752kg

    Motor power: 3.1-1120kw

    NPSH (Cavitation margin): 2.0-7.0m

    Price: 2.59-357,000

     

    The corrosion-resistant multistage centrifugal pump type (M)DF for mining, structurally, is a single-suction segmented multistage centrifugal pump. It is a corrosion-resistant multistage pump designed and improved by our company based on the corrosion-resistant multistage pump DF. This pump adopts a nationally recommended hydraulic model, with high efficiency, wide performance range, safe and stable operation, and low noise.

    +86 0731-88192288

    Customer service hotline

    info@cipump.com

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    Product Description Product Specifications Why Choose Us? FAQ

    Product summary

    (M) The corrosion-resistant multistage centrifugal pump for mining type DF, structurally, is a single-suction and segmented-section multistage centrifugal pump. It is a corrosion-resistant multistage pump designed and improved by our company based on the corrosion-resistant multistage pump type DF. This pump adopts a state-recommended hydraulic model, featuring high efficiency, a wide performance range, safe and stable operation, low noise, long service life, and easy installation and maintenance. The horizontal corrosion-resistant multistage pump type DF is directly driven by the motor through an elastic coupling, allowing an inlet pressure of up to 0.6 MPa. It is mainly suitable for water supply and drainage and fire-fighting use in high-rise urban buildings, supply and drainage in factories and mines, long-distance water transportation, water circulation in production processes, heating and air conditioning circulation, drinking water, and other uses. It is also a commonly used acid and corrosion-resistant pump in the chemical industry. If the user has special requirements for the pump materials and structure, our company can change the flow parts and pump casing material, as well as the inlet and outlet directions according to user needs, and can also provide multi-outlet structures and functions for the corrosion-resistant multistage centrifugal pump for mining type (M)DF.

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           Image 1 Scope of application of the corrosion-resistant multistage centrifugal pump for mining type (M)DF

    Suitable for transporting clean water with temperatures from -20℃ to 105℃ or media with stable physicochemical properties, with insoluble solids not exceeding 0.1% by volume per unit and particle size ≤ 2 mm, similar to clean water; it can also be used to transport corrosive liquids with pH from 5 to 10.

     

           Image 1 Structural form and characteristics of the corrosion-resistant multistage centrifugal pump for mining type (M)DF

    The corrosion-resistant multistage centrifugal pump for mining type (M)DF is horizontally installed. The rotor part 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 parts on the shaft are fixed by keys and nuts, forming a unit with the shaft. The entire rotor is supported by ball or sliding bearings at both ends. The bearings do not bear axial forces, which are balanced by the balance disk. Additionally, a flat disk indicator is installed at the pump end to monitor the wear of the balance disk. The pump inlet can be horizontal or vertical upward. The pump casing parts, such as the inlet, middle, and outlet sections, are connected by tension bolts forming a unit. Bearing components are at both ends, and the number of pump stages is selected according to the height required by the user. The shaft seal generally uses packing seal, although mechanical seal can also be used according to user needs. The rotation direction, viewed from the motor end, is clockwise. The configured motor is from the Y3 series.

     

     

    Structural diagram of the stainless steel multistage pump type DF

         

     

            Image 1 Structural features of the corrosion-resistant multistage centrifugal pump for mining type (M)DF

     

    　　It adopts the corrosion-resistant multistage pump structure type DF, divided into five parts: stator part, rotor part, sealing part, bearing part, and balance part.

    　　1. Stator part

    　　Composed of the pump body (inlet and outlet sections, middle section), guide vanes, etc., fixed by rods and screws, forming a sealed working chamber.

    　　2. Rotor part

    　　Composed of the shaft, impeller, shaft sleeve, and balance disk device. Through shaft transmission, the impeller rotates generating centrifugal force that drives the medium flow.

    　　3. Bearing part

    　　Composed of the bearing body, bearing, and bearing cover. The bearing supports the shaft, ensuring its stable and normal operation.

    　　4. Sealing part

    　　Divided into packing seal and mechanical seal. The packing seal is mainly used where leakage requirements are not strict or when the medium contains solid particles. The mechanical seal is suitable for high temperature, high pressure, and corrosive conditions where strict leakage control is required. Both seals ensure sealing at both ends of the pump, preventing medium leakage and guaranteeing pump tightness.

    5. Balance part

    Because the pressure areas on the front and rear plates of the impeller differ, an axial force is generated which is eliminated by the balance device. The balance device inside the pump consists of the balance disk, balance ring, and balance sleeve. The pump's balance chamber is connected through the discharge section (outlet section), packing seal body (rear cover), and balance tube with the suction section (inlet section). The balance tube must not be blocked under any circumstances, and the amount of balance water in the tube can be adjusted by a valve.

     

            Image 1 Main materials of the parts of the corrosion-resistant multistage centrifugal pump for mining type (M)DF

    　　The materials of the flow parts of the corrosion-resistant multistage centrifugal pump for mining type (M)DF include cast steel and cast stainless steel. When ordering, the pump material, seal type, and pump structure should be reasonably selected according to the name of the transported medium, concentration, inlet pressure, operating temperature, and degree of material corrosion.

     

            Image 1 Scope of supply of the corrosion-resistant multistage centrifugal pump for mining type (M)DF

    　　The corrosion-resistant multistage centrifugal pump for mining type (M)DF is supplied together with the motor and base, which can be equipped with a common base or its own base. The factory also provides accessories (including discharge cone pipe, gate valve, check valve) and spare parts (including impeller, seal ring, guide sleeve, balance disk, shaft sleeve).

     

           Image 1 Advantages of the horizontal corrosion-resistant multistage pump type DF product

    1. High efficiency and energy saving: Specialized production is maintained, with unique methods in product model selection, mold manufacturing, and casting process of hydraulic components. All flow passage parts use precision casting, ensuring the dimensions and finish of the flow channels. The measured efficiency is on average more than 2% higher than common multistage pumps on the market, achieving a good energy-saving effect.

    2. Advanced process equipment: Our company, to ensure product assembly performance, has imported advanced parts cleaning equipment from abroad. Each part undergoes certified cleaning before final assembly. In addition to normal material tests, hydrostatic pressure tests, and static balance tests, all rotor parts of level 6 or higher pumps are inspected after partial assembly to check shaft runout, controlling the runout value within 0.05 mm, followed by a dynamic balance test according to G2.5 level. After complete assembly, shaft and coupling runout as well as axial movement are rechecked to ensure product assembly quality.

    3. Unique structure: An O-type sealing ring is installed on the coupling surface between the balance ring and the pump to prevent high-pressure water from entering the balance chamber and affecting the balance effect of the balance disc, reducing wear on the balance disc and extending the product's service life.

    4. Reasonable material selection: According to different user needs, the material of the balance disc and balance ring can be hard alloy welded, alloy steel, or QT600Mn2 alloy ductile iron, with high surface hardness and good wear resistance, improving the product's service life.

    5. Good surface quality: Precision mold casting process and an automatic spraying machine are used to apply paint, achieving good surface quality and an aesthetic appearance.

    Image of the corrosion-resistant pump usage site

     

    Production process

    　　

    Product Parameters

    Description of the corrosion-resistant multistage centrifugal pump model for mining type (M)DF

     

     

    Performance parameters of the corrosion-resistant multistage centrifugal pump for mining type (M)DF (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 corrosion-resistant multistage centrifugal pump for mining type (M)DF, 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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