Puede fabricar 26 series de productos, incluyendo bombas de circulación para grandes centrales eléctricas, bombas de condensación para grandes centrales eléctricas, bombas petroquímicas, bombas multietapa, bombas de aguas residuales y lodo, bombas multietapa autoequilibradas, bombas de doble succión y única etapa tipo split, y bombas centrífugas de succión simple y única etapa.
La elección de más de cientos de miles de clientes, cubriendo industrias como minería de carbón, metalurgia, química, energía, recursos hídricos, alimentos, municipalidades y protección ambiental, y exportando a Asia Sudeste, África, América y otros lugares.
La empresa fue la primera en la industria en obtener las certificaciones internacionales del sistema de calidad ISO 9001:2008, del sistema de gestión ambiental ISO 14001 y del sistema de gestión de seguridad y salud ocupacional GB/T 28001, además de la certificación API 610 de la Asociación Estadounidense del Petróleo.
La empresa, fundada en 1989, es una empresa nacional de alta tecnología integral que integra diseño, investigación y desarrollo, fabricación y servicios; actualmente es una empresa clave en la industria china de bombas centrífugas y una de las grandes fábricas especializadas.
Con productos innovadores, calidad excepcional y servicios integrales, buscamos la verdad y la pragmática, avanzamos con iniciativa, y nos esforzamos por lograr el objetivo de ser "la marca líder en el campo de aplicación de bombas centrífugas en el país"! Raigada en Hunan, orientada a todo el país y hacia el mundo!
As one of the recognized national manufacturers of multistage centrifugal pumps, our company, to actively respond to the national call for energy saving and adherence to the sustainable development path, after studying and adopting advanced technologies from similar foreign products, and combining with years of experience in pump design, has developed a series of high-efficiency and energy-saving self-balancing multistage centrifugal pumps.
As one of the recognized national manufacturers Multistage centrifugal pump of manufacturers, a professional manufacturer of multistage pumps for mining in Hunan, China, to actively respond to the national call for energy saving and sustainable development, after studying and adopting advanced technologies from similar foreign products, and combining the water pump design experience of our company over many years, we developed an efficient and energy-saving series Self-balancing multistage centrifugal pump The MDSP type self-balancing double suction multistage pump is a new structure developed by Changsha Zhonglian Pump Industry based on the mature development of the MDP self-balancing multistage pump, to meet higher flow rates and more complex inlet environments, with double inlet (symmetrical left and right). This type of pump meets the bidirectional inlet demand of multistage centrifugal pumps, greatly improving ease of operation and maintenance, allowing for simple disassembly and assembly, being an efficient and highly adaptable water pump.
The MDSP type self-balancing double suction multistage pump body is a self-balancing multistage centrifugal pump with double inlet in volute form, independently developed by our company as a new generation of double suction multistage pumps. The pump inlets are at both ends (double inlet), with several single-stage impellers arranged symmetrically, the number of which depends on the required height, and the outlet is in the center with double suction. Impeller Constitution. Since the inlets are symmetrically arranged at both ends, the medium gathers before entering the casing to pressurize, with similar pressures at both ends, without high and low pressure imbalance, eliminating the need for balance pipes and seals, saving casing volume and improving operational efficiency. 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 merge at the outlet section for discharge, achieving a parallel of channels. This design allows for the self-balancing of the axial force of the rotor without the need for balance pipes or seals for high and low pressure areas, reducing leaks and avoiding volume losses caused by pipes and seals in traditional multistage centrifugal pumps, improving the efficiency of the pump set, completely replacing the traditional mode of horizontal multistage double suction single-stage pumping, achieving single-stage pumping and significantly reducing project budgets and operational and maintenance costs of the equipment.
MDSP type self-balancing double suction multistage pump Scope of application
The MDSP type self-balancing double suction multistage pump is mainly used to transport clean water without solid particles, with temperatures from -20℃ to 210℃, or liquids with physical and chemical properties similar to clean water. It is suitable for water supply at medium, low, and high pressure. It can also transport hot water ≤210℃, oils, corrosive or abrasive media by changing the pump materials (or flow parts), sealing type, and adding cooling systems, being a new generation of horizontal multistage pumps for mining that can replace traditional mining pumps.
1. Hydraulic engineering, urban and municipal supply and drainage:
The MDSP type self-balancing double suction multistage pump is mainly used in hydraulic engineering and supply and drainage to transport clean water without solid particles and with a temperature below 80℃ or liquids with physical and chemical properties similar to clean water;
2. Mine drainage and emergency rescue
In the field of mine drainage, the MDSP type self-balancing double suction multistage pump is used to transport neutral mine water with a particle content of ≤1.5%, particle diameter of ≤1.3mm, temperature between -20℃ and 104℃, and other similar wastewater;
3. Petrochemical:
In the petrochemical industry, the MDSP type self-balancing double suction multistage pump is used to transport oils and petroleum products without solid particles, with temperatures between -20℃ and 105℃ and viscosity less than 120 centipoises;
4. Electric power and power plants:
The MDSP type self-balancing double suction multistage pump can also be used in water supply systems for boilers, transporting condensate water, supplying water to deoxygenation equipment, and producing high-pressure water in industrial processes.
5. Others:
The MDSP type self-balancing double suction multistage pump can also be used for long-distance water supply, agricultural irrigation, pumped energy storage, and other places with large flow rates and high lift.
Self-balancing horizontal multistage pump VS traditional multistage pump 10 major advantages
1. New structure The self-balancing double suction multistage pump has rotor components with symmetrically arranged impellers, causing the axial forces generated by the positive and negative impeller groups to cancel each other out, eliminating the need for balance discs with small spaces, high pressure drop, easy erosion, wear, and failures, overcoming the traditional structure of multistage pumps;
2. New technology The self-balancing double suction multistage pump has unique throttling, pressure reduction, and balancing devices in odd stages, which also act as auxiliary support;
3. High efficiency and energy saving The self-balancing double suction multistage pump uses an advanced hydraulic model, solving the wear and axial pulsations caused by the balance disc, maintaining excellent alignment between the impeller and the guide, avoiding significant efficiency reduction caused by wear of the balance disc and rotor displacement in common multistage pumps during prolonged use, eliminating balance water leaks, reducing volume losses, improving the overall operational efficiency of the pump, and reducing shaft power, with an average efficiency 3%-12% higher than common multistage pumps;
4. High reliability The double suction multistage self-balancing pump uses a self-balancing system to essentially cancel the axial force load generated during the operation of the pump, minimizing rotor wear in the pump and system interference. A small residual part of the axial force is supported by the thrust bearing, which keeps the pump shaft always in a state of tension, with a uniform distribution of stress on the shaft and a significant reduction of the stress peak compared to the original structure, thus improving the rigidity and critical speed of the pump rotor, and notably increasing the stability and reliability of the pump rotor operation.
5, High stability The double suction multistage self-balancing pump maintains high stability and operational efficiency even after prolonged operation, thanks to the excellent symmetrical combination of the impeller and diffuser, as well as the reasonable adjustment of the clearance and the wide axial throttling design.
6, Good performance against cavitation The double suction multistage self-balancing pump uses an optimized hydraulic model and structural design, with a double suction structure in the first stage of the impeller, along with precise casting and wear-resistant materials, which gives it good performance against cavitation. The machine operates stably and with low noise, without the need to install an additional pre-pump or raise the height of the inlet tank.
7, Mechanical seal High reliability: because the double suction multistage self-balancing pump does not exhibit axial displacement of the rotor during startup and shutdown, nor axial pulsations during operation, the problem of low reliability of the mechanical seal that has always affected multistage pumps has been overcome.
8, Easy maintenance The double suction multistage self-balancing pump uses a three-dimensional design for the entire machine, with CNC processing of the rotor parts, strictly ensuring the dimensions and machining accuracy of each component. This allows for quick assembly and disassembly, and the replacement of seals and bearings without disassembling the pump body or the inlet and outlet pipes. General technical personnel can complete the work following the order and requirements of the assembly diagram, completely avoiding the need for specialized personnel to adjust and position the axial displacement, which offers great convenience to the user.
9, Low maintenance rate The double suction multistage self-balancing pump uses precise casting, reducing wear parts and the frequency of disassembly and repair, prolonging the product's lifespan and largely avoiding a series of problems caused by frequent disassemblies, which reduces maintenance costs.
10, High adaptability The double suction multistage self-balancing pump adopts an advanced combined modular design, with locally tested components for intensive use and prolonged operation. The parts have high interchangeability, eliminating the small space balance disk device, and are better suited to more severe medium conditions than traditional structure multistage pumps.
Double suction multistage self-balancing pump Comparative cost chart between self-balancing multistage pump and traditional multistage pump
Our company is a recognized national manufacturer of multistage centrifugal pumps, independently established after the restructuring of Zhonglian Pump Industry, specializing in research and manufacturing. Auto Self-balancing multistage pump, vertical multistage pump, multistage pump for mining, corrosion-resistant multistage pump, with more than 30 years of experience in research and development of multistage centrifugal pumps, and manufacturing. The company, with strong technical strength, rich production experience and complete inspection methods, a professional design and research team, and production technical personnel, has developed into a key national high-tech enterprise in multistage pump equipment. The produced pumps water multistage pump fully utilize computer design and optimization, with stable and reliable quality, good performance against cavitation. Welcome to contact us for inquiries.
Product parameters
Description of the double suction self-balancing multistage pump model type MDSP
Performance parameters of the double suction self-balancing multistage pump type MDSP ( These data are for reference only, please take the actual order as the standard!)
Model Model Number
Stages
Flow
Q
(m 3 /h)
Height
H
(m)
Rotational speed
n
(r/min)
Efficiency
η
(%)
Power (kW)
Required NPSH
NPSHR cavitation margin
(m)
Weight
(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
Stages
Flow Q（m 3 /h）
Height H（m）
Speed n（r/min)
Efficiency
（%）
Power（kW）
Required NPSH
Cavitation margin
NPSHR(m)
Weight
(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
Stages
Flow
Q
(m 3 /h)
Height
H
(m)
Rotational speed
n
(r/min)
Efficiency
η
(%)
Power (kW)
Required NPSH
NPSHR cavitation margin
(m)
Weight
(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
More performance parameters of the double suction self-balancing multistage pump type MDSP Please visit Water pump selection Page to download the intelligent selection software Or call: 0731-88192288 for more information.
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.
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 。
MDSP type self-balancing double suction multistage pump 
