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 with double inlet model MDSP
    Multistage centrifugal pump for mining with double inlet model MDSP
    Multistage centrifugal pump for mining with double inlet model MDSP
    Multistage centrifugal pump for mining with double inlet model MDSP
    Multistage centrifugal pump for mining with double inlet model MDSP
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    • Multistage centrifugal pump for mining with double inlet model MDSP
    • Multistage centrifugal pump for mining with double inlet model MDSP
    • Multistage centrifugal pump for mining with double inlet model MDSP
    • Multistage centrifugal pump for mining with double inlet model MDSP
    • Multistage centrifugal pump for mining with double inlet model MDSP

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    Mining Multistage Pump

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    Pump

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    Multistage centrifugal pump for mining with double inlet model MDSP

    Lifting height: 72~1800m

    Flow rate: 4~1350m³/h

    Pump weight: 155-7390kg

    Efficiency: 33%-83%

    NPSH (Cavitation margin): 2.0-7.0m

    Price: 229,000-888,000

     

    As one of the most recognized domestic manufacturers of multistage centrifugal pumps, our company, to actively respond to the national call for energy saving and adhere to the sustainable development path, after studying and fully adopting the advanced technology of similar products abroad, and combining with the many years of water pump design experience of our company, has developed and designed a series of high-efficiency and energy-saving self-balancing multistage centrifugal pumps.

    +86 0731-88192288

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    Product description

    As one of the recognized domestic manufacturers of multistage centrifugal pumps for mining, Changsha Zhonglian Pump Industry has been dedicated since 1989 to the research, design, and manufacture of multistage centrifugal pumps for mining suitable for various working conditions, tirelessly pursuing product quality, performance, and cost-effectiveness. After more than 30 years of accumulation and experience, it has become a professional manufacturer of multistage centrifugal pumps for mining in the China region. The MDSP type double inlet multistage centrifugal pump for mining is a new structure developed by Changsha Zhonglian Pump Industry based on the mature development of the self-balancing MDP multistage pump, designed to meet the demands of mines with large flow rates and more complex inlet environments for draining underground water. This double inlet (left and right symmetrical) self-balancing multistage pump meets the need for bidirectional inlet of multistage centrifugal pumps, greatly improving ease of operation and maintenance, allowing simple disassembly and assembly, being a new multistage pump for mining with very wide applicability.

    Self-balancing double suction multistage pump type MDSP 3    

    The MDSP type double inlet multistage centrifugal pump for mining has a pump body with double inlet and volute casing; it is a new generation double suction multistage pump independently developed by our company. The two pump inlets are at the left and right ends (double inlet), with several single-stage impellers arranged symmetrically, the number depending on the required head. The outlet is in the center and consists of double suction impellers. Because the inlets are symmetrically arranged at both ends, the medium mixes before entering the casing to pressurize, with nearly equal pressures at both ends, without high and low pressure imbalance, eliminating the need for balance tubes and sealing devices, saving casing volume and improving operational efficiency. Additionally, the rotor components of the impeller are symmetrically arranged, and the pump structure automatically balances the axial force generated by the impeller. The two channels join and discharge through the outlet segment, achieving parallel flow. This design allows the axial force of the rotor inside the pump to be automatically balanced without the need for balance tubes or sealing devices in high and low pressure zones, reducing leaks and avoiding volumetric losses caused by balance tubes and seals in traditional multistage centrifugal pumps, improving the efficiency of the pump assembly. It can completely replace the traditional mode of single-stage double suction horizontal multistage pumping, achieving single-stage pumping and significantly reducing project budget and equipment operation and maintenance costs.

     

     

      Image 1   MDSP type double inlet multistage centrifugal pump for mining Scope of application

    　　Mainly used to transport clean water without solid particles, with temperatures from -20℃ to 210℃, or liquids with physicochemical properties similar to clean water. Suitable for medium, low, and high pressure water supply. It can also be used to transport hot water ≤210℃, oils, corrosive or abrasive media by changing pump materials (or fluid passage parts), sealing type, and adding cooling systems. It is a new generation horizontal multistage pump for mining that can replace traditional mining water pumps.

    　　1. Hydraulic engineering, supply and drainage in urban and municipal construction:

    　　To transport clean water without solid particles and with temperature below 80℃ or liquids with physicochemical properties similar to clean water.

    　　2. Mine drainage and emergency rescue

    　　To transport neutral mine water with particle content ≤1.5%, particle diameter ≤1.3 mm, and temperature between -20℃ and 104℃, as well as other similar wastewater.

    　　3. Petrochemical:

    　　To transport oils and petroleum products without solid particles, with temperature between -20℃ and 105℃ and viscosity less than 120 cSt.

    　　4. Electric power and power plants:

    Water supply for boilers and transport of condensate water, pressurized water transport in deoxygenation equipment, production of high-pressure water in industrial processes.

    　　5. Others:

    　　For long-distance water supply, agricultural irrigation, pumped storage energy, and other places with large flow rates and high lift heights.

         Image 1   Top 10 advantages of the self-balancing double inlet multistage centrifugal pump for mining VS traditional multistage centrifugal pump for mining

     

    1. New structure: the self-balancing double inlet multistage centrifugal pump for mining has rotor components with symmetrically arranged impellers, causing the axial forces generated by the impeller groups in positive and negative directions to cancel each other out, eliminating the need for balance disks with small gaps, high pressure drop, easy erosion, wear, and failures, overcoming the traditional structural limitations of multistage pumps and improving performance;

    2. New technology: the self-balancing double inlet multistage centrifugal pump for mining features unique throttling, pressure reduction, and balancing devices in odd stages, which not only automatically balance the axial force but also act as auxiliary support;

    3. High energy efficiency: the self-balancing double inlet multistage centrifugal pump for mining uses an advanced hydraulic model that solves wear and axial pulsations caused by the balance disk, maintaining excellent alignment between the impeller and guide. During prolonged use, it avoids significant efficiency decreases caused by balance disk wear and rotor displacement in common multistage pumps, eliminates balance water leaks, reduces volumetric losses, improves overall operational efficiency, reduces shaft power, and increases efficiency on average between 3% and 12% compared to common multistage pumps;

    4. High reliability: the self-balancing double inlet multistage centrifugal pump for mining uses a self-balancing system that almost completely cancels axial load during operation, minimizing rotor wear and system interference. The small residual axial force is supported by the thrust bearing, keeping the pump shaft always in tension, with uniform force distribution and a significant reduction in peak stress compared to the original structure, improving rotor stiffness and critical speed, and notably increasing rotor operation stability and reliability;

    5. High stability: The double-suction self-balancing multistage centrifugal pump for mining, thanks to the excellent symmetrical combination of impellers and guides, as well as proper clearance and a wide axial throttling design, maintains high stability and operational efficiency even after prolonged operation;

    6. Good cavitation resistance: The double-suction self-balancing multistage mine centrifugal pump uses an optimized hydraulic model and structural design, with a double-suction impeller structure in the first stage, in addition to precise casting and wear-resistant materials, which gives it good cavitation resistance. The machine operates stably and quietly, without the user needing to set up an additional preliminary pump or raise the inlet tank height.

    7. High mechanical seal reliability: Because the double-suction self-balancing multistage mine centrifugal pump does not have axial displacement of the rotor during start-up and shutdown, nor axial pulsations during operation, it has overcome the problem of low mechanical seal reliability that has always affected multistage pumps.

    8. Convenient maintenance: The double-suction self-balancing multistage mine centrifugal pump is designed in 3D, with rotor components machined by numerical control, strictly ensuring the dimensions and precision of each part. This allows for quick assembly and disassembly, and the replacement of seals and bearings without dismantling the pump body or the inlet and outlet pipes. General technical personnel can complete the process by following the assembly diagram's order and requirements, completely avoiding the need for only specialized personnel to adjust and position the axial displacement, providing great convenience to the user.

    9. Low maintenance rate: The double-suction self-balancing multistage mine centrifugal pump uses precise casting, reducing wear parts and the frequency of disassembly for maintenance, prolonging the product's service life and largely avoiding problems caused by frequent disassemblies, which reduces maintenance costs.

    10. High adaptability: The double-suction self-balancing multistage mine centrifugal pump adopts an advanced combined modular design. The local components have been tested under intensive use and prolonged operation, with high parts interchangeability. The small-space balance disk device is eliminated, making this multistage pump more suitable for media with more adverse properties than traditional structure multistage pumps.

     

           

    Our company is a nationally recognized manufacturer of multistage centrifugal pumps. It was independently established after the restructuring of Zhonglian Pump Industry, specializing in the development and manufacture of self-balancing multistage pumps, vertical multistage pumps, mining multistage pumps, and corrosion-resistant multistage pumps. We have more than 30 years of experience in research and manufacturing of multistage centrifugal pumps. Thanks to our strong technical capability, extensive production experience, comprehensive inspection methods, and a professional design and engineering team, we have become a key national high-tech enterprise in multistage pump equipment. All our multistage pumps are computer-designed and optimized, ensuring stable and reliable quality and good cavitation resistance. We invite you to contact us for inquiries.

     

     

    Production process

    Product Parameters

    Description of the MDSP type double-suction multistage centrifugal pump model for mining

     

     

     

    Performance parameters of the MDSP type double-suction self-balancing multistage pump (These data are for reference only, please take the actual order as the standard!)

     

    Model Model

    Number of stages Stages

    Flow rate

    Q

    (m3/h)

    Lift height

    H

    (m)

    Rotational speed

    n

    (r/min)

    Efficiency

    η

    (%)

    Power (kW)

    Required NPSH

    Cavitation margin NPSHR

    (m)

    Mass

    (kg)

    Shaft power

    P

    Motor

    Power M

    MDS450-95P

    3

    385

    450

    515

    300

    285

    267

    1480

    72

    75

    73

    436.8

    465.6

    486

    560

    4.5

    5.5

    6.8

    2400

    4

    400

    380

    356

    582.4

    620.8

    648

    710

    3000

    5

    500

    475

    445

    728

    776

    810

    900

    3300

    6

    600

    570

    534

    873.6

    931.2

    972

    1000

    3600

    7

    700

    665

    623

    1019.2

    1086.4

    1134

    1250

    3900

    8

    800

    760

    712

    1164.8

    1241.6

    1296

    1400

    4200

    9

    900

    855

    801

    1310.4

    1396.8

    1458

    1600

    4500

    10

    1000

    950

    890

    1456

    1552

    1620

    1800

    4800

    11

    1100

    1045

    979

    1601.6

    1707.2

    1782

    2000

    5100

    12

    1200

    1140

    1068

    1747.2

    1862.4

    1944

    2240

    5400

     

    Model

    Number of stages Stages

    Flow rate Q (m3/h)

    Height H (m)

    Speed n (r/min)

    Efficiency

    (%)

    Power (kW)

    Required NPSH

    Cavitation margin

    NPSHR (m)

    Mass

    (kg)

    Shaft power P

    Motor power

    MDS580-100P

    3

    450     580    640

    321

    300

    285

    1480

    70

    74

    73.5

    561

    640

    675

    800

    5.8

    6.1

    6.7

    4333

    4

    428

    400

    380

    749

    853

    900

    1000

    4672

    5

    535

    500

    475

    936

    1067

    1126

    1250

    5011

    6

    642

    600

    570

    1123

    1280

    1351

    1600

    5350

    7

    749

    700

    665

    1311

    1493

    1576

    1800

    5689

    8

    856

    800

    760

    1498

    1707

    1801

    2000

    6028

    9

    963

    900

    855

    1685

    1920

    2026

    2240

    6367

    10

    1070

    1000

    950

    1873

    2134

    2252

    2500

    6706

    11

    1177

    1100

    1045

    2060

    2347

    2477

    2800

    7045

    12

    1284

    1200

    1140

    2247

    2560

    2702

    2800

    7384

     

    Model Model

    Number of stages Stages

    Flow rate

    Q

    (m3/h)

    Lift height

    H

    (m)

    Rotational speed

    n

    (r/min)

    Efficiency

    η

    (%)

    Power (kW)

    Required NPSH

    Cavitation margin NPSHR

    (m)

    Mass

    (kg)

          

    Shaft power

    P

    Motor

    Power M

    		  

    MDS1100-85P

    2

    800     1100          1250

    186

    170

    157

    1480

    72.9 75.5  73.4

    556.1

    683.0

    728.5

    800

    5.3

    5.6

    6.2

    2970

     

    3

    		 

    279

    255

    235.5

    		  

    834.2

    1024.5

    1092.8

    1250

    		 

    3250

     

    4

    		 

    372

    340

    314

    		  

    1112.3

    1366.0

    1457.1

    1600

    		 

    3530

     

    5

    		 

    465

    425

    392.5

    		  

    1390.4

    1687.2

    1821.3

    2000

    		 

    3810

     

    6

    		 

    558

    510

    471

    		  

    1668.5

    2024.6

    2185.6

    2240

    		 

    4090

     

    7

    		 

    651

    595

    549.5

    		  

    1946.6

    2362.1

    2549.9

    2800

    		 

    4370

    For more performance parameters of the MDSP type double-suction multistage centrifugal pump for mining, 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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