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!
Self-balancing multistage hot water pump high pressure type DGP
Flow: 3.6-1349m³/h
Manometric height: 72-1798m
Efficiency: 33%-83%
Weight of the pump: 159-6261kg
Motor power: 5.5-4500kw
Cavitation margin: 2.0-7.0m
Price: 3.10-28.9 ten thousand
The high-pressure multi-stage self-balancing centrifugal pump type DGP is mainly used for transporting hot water, oils, and media that do not contain solid particles, with a temperature of -20℃ to 210℃, abrasive or with physical-chemical properties similar to clean water.
As one of the most recognized domestic manufacturers of multistage centrifugal pumps, to actively respond to the national call for energy savings and adhere to the sustainable development path, our company, after studying and adopting advanced technologies from similar foreign products and combining years of experience in pump design, has developed a series of high-efficiency and energy-saving self-balancing multistage centrifugal pumps. This series of multistage centrifugal pumps uses a hydraulic model recommended by the state, developed according to the API610 standard, with characteristics of high energy efficiency, wide performance range, reasonable structure, good cavitation resistance, safe and stable operation, low noise level, few wear parts, and easy installation and maintenance, occupying an advanced technical position in the industry.
The self-balancing multistage centrifugal pump type DGP is a high-pressure hot water pump, whose main function is that when the pressure of the pipeline network drops to a very low level (pressure), the replenishment pump is activated to replenish water to the network up to the established level (pressure). The self-balancing multistage centrifugal pump type DGP innovates in the structure of the traditional multistage pump, eliminating the axial force balancing device of common multistage pumps, and uses the mutual cancellation of the forces of the symmetrically arranged impeller rotor components to balance the axial force, effectively solving the axial displacement. During operation, there is no efficiency loss caused by the friction of the balancing disc or by backflow, increasing efficiency by 3-12% compared to common multistage pumps of the same category. At the same time, it completely resolves failures such as wear or blockage of the balancing disc and seat caused by failures of the balancing device, significantly prolonging the service life of the pump. After years of use by users, it has been proven that the series of self-balancing multistage centrifugal pumps produced by our company has much greater reliability and efficiency than traditional type D multistage pumps, with a fault-free operating time more than three times greater, effectively extending the service life, which not only directly saves production costs for users but also significantly reduces operating and maintenance costs. The self-balancing multistage centrifugal pump type DGP is the main model of the series for transporting or circulating hot water, adopting the traditional structure with balancing disc or drum. Multistage pump type DG An excellent substitute product, widely used in water supply for pressure vessels, hot water circulation, water supply in high-rise buildings, agricultural irrigation, fire pressure boosting, hydraulic washing, municipal supply and drainage, urban heating, food industries, pharmaceuticals, chemicals, aquaculture, environmental protection, among others.
High-pressure hot water self-balancing multistage centrifugal pump type DGP Scope of application
The high-pressure hot water self-balancing multistage centrifugal pump type DGP is mainly used for transporting hot water, oils, media without solid particles, with temperatures from -20℃ to 210℃, abrasive or with physical-chemical properties similar to clean water.
High-pressure hot water self-balancing multistage centrifugal pump type DGP Multistage centrifugal pump Structure description
The self-balancing multistage centrifugal pump type DGP has support at both ends, the casing is segmented, and the pump drive is connected to the motor via a pin elastic coupling.
Pump rotation direction: viewed from the drive end, the pump rotates clockwise.
1. Stator part
Mainly composed of the suction section (water inlet), middle section, discharge section (water outlet), guide vanes, secondary water inlet section, packing body (rear cover) and bearing and other parts connected together by tension bolts. Viewed from the coupling end, the pump inlet is oriented horizontally to the right, and the outlet vertically upwards.
2. Rotor part
Mainly composed of shaft, impeller, throttling shaft components, bearings, and sleeves.
3. Pump sealing
3.1 The static joint surfaces between the suction section (water inlet), middle section, discharge section (water outlet), and secondary water inlet section are sealed with sealant adhesive or molybdenum disulfide.
3.2 Throttling sealing is used between the stages of the pump.
3.3 The shaft seals on both sides of the pump use soft packings.
3.4 A water retention ring is used to prevent water from entering the bearings.
4. Bearing part
The complete rotor of the pump is supported by a cylindrical roller bearing "GB/T283-94" at the drive end and an angular contact ball bearing "GB/T292-94" at the opposite end. The bearings are lubricated with mechanical oil CD30 or CD40 up to the center of the oil sight glass. Due to the use of the angular contact ball bearing "GB/T292-94", the assembled rotor does not exhibit axial displacement.
High-pressure hot water self-balancing multistage centrifugal pump type DGP Operating principle:
The pump shaft, driven by the motor, rotates the impeller, doing work on the liquid and increasing its kinetic energy, so that the necessary amount of liquid successively passes from the suction pool through the pump inlet section, direct impeller, direct guide vanes, middle section, horizontal outlet, transition pipe, secondary inlet section, reverse impeller, reverse guide vanes, to the vertical outlet, and then is discharged to the demand point.
Customer case of high-pressure hot water self-balancing multistage centrifugal pump type DGP
Operation site of the high-pressure hot water self-balancing multistage pump type DGP of Shuncheng Group Coal Coking Co., Ltd.
10 major advantages of the self-balancing multistage centrifugal pump VS traditional multistage centrifugal pump
1. New structure: The self-balancing multistage centrifugal pump has a rotor with symmetrically arranged impellers, which cancels out the axial forces generated by the impeller groups in both positive and negative directions, eliminating the balance disk device that has small clearances, high pressure drop, easy erosion, wear, and failures, thus overcoming the traditional structure of multistage pumps;
2. New technology: The self-balancing multistage centrifugal pump features unique throttling, pressure reduction, and balancing devices in odd stages, which can also act as auxiliary support;
3. High energy efficiency: The self-balancing multistage centrifugal pump uses an advanced hydraulic model that resolves the wear and axial pulsation caused by the balance disk, always maintaining excellent alignment between the impeller and the guide vanes. During prolonged use, it avoids significant efficiency loss caused by wear of the balance disk and rotor displacement in common multistage pumps, in addition to eliminating balance water leakage, reducing volumetric loss, overall improving the operational efficiency of the pump and reducing shaft power, with an average efficiency 3%-12% higher than that of common multistage pumps;
4. High reliability: The self-balancing multistage centrifugal pump uses a self-balancing system that basically cancels the axial force load generated during operation, minimizing rotor wear and system interference. The small residual axial force is supported by the thrust bearing, keeping the pump shaft always under tension, with a uniform load distribution and a significant reduction in peak stress compared to the prototype structure, thus improving the rigidity and critical speed of the rotor, and significantly increasing the stability and reliability of rotor operation;
5. High stability: The self-balancing multistage centrifugal pump, thanks to the excellent symmetrical combination of the impeller and guide vanes, as well as reasonable clearance and wide throttling axial design, maintains high stability and operational efficiency even after prolonged operation;
6. Good cavitation performance: The self-balancing multistage centrifugal pump uses an optimized hydraulic model and structural design, with a double suction structure in the first stage impeller, along with precise casting and wear-resistant materials, giving it good cavitation performance. The machine operates stably and quietly, without the user needing to install a pre-pump or raise the height of the inlet tank;
7, Mechanical seal High reliability: Since the self-balancing multistage centrifugal pump does not exhibit axial rotor displacement 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 self-balancing multistage centrifugal pump uses a complete three-dimensional design and CNC machining in the rotor parts, strictly ensuring the dimensions and machining precision of each component, allowing for quick assembly and disassembly. Additionally, it is possible to replace the seal and bearings without disassembling the pump body or the inlet and outlet pipes. General technical personnel can complete the process by following the order and requirements of the assembly diagram, completely avoiding the need for specialized personnel to adjust and position the axial clearance, providing great convenience to the user;
9. Low maintenance rate: The self-balancing multistage centrifugal pump uses precise casting, reducing wear parts and the frequency of disassembly for maintenance, prolonging the product's lifespan and largely avoiding a series of problems caused by frequent disassemblies, thus reducing maintenance costs;
10. High adaptability: The self-balancing multistage centrifugal pump adopts an advanced combined modular design, with local components that have been tested in intensive use and prolonged operation, with high interchangeability of parts, eliminating the small clearance balance disk device, adapting better than traditional multistage pumps to media with more severe properties.
Comparative cost chart between self-balancing multistage centrifugal pump and traditional multistage pump
Product parameters
Explanation of the self-balancing multistage centrifugal pump model for hot water at high pressure type DGP
Performance parameters of the self-balancing multistage centrifugal pump for hot water at high pressure type DGP （ These data are for reference only, please take the actual order as the standard!）
DG6-25P
DG6-50P
DG6-80P
DG12-25P
DG12-50P
DG12-80P
DG25-30P
DG25-50P
DG25-80P
DG46-30P
DG46-50P
DG46-80P
DG65-80P
DG85-45P
DG85-67P
DG85-80P
DG85-150P
DG100-55P
DG120-50P
DG120-67P
DG120-80P
DG120-100P
DG150-30P
DG150-50P
DG150-80P
DG150-100P
DG150-130P
DG155-30P
DG155-67P
DG200-50P
DG200-80P
DG200-100P
DG200-150P
DG280-43P
DG280-65P
DG280-95P
DG280-100P
DG300-45P
DG300-65P
DG360-40P
DG360-60P
DG360-95P
DG420-95P
DG450-40P
DG450-60P
DG450-95P
DG500-57P
DG550-40P
DG550-50P
DG550-95P
DG580-60P
DG580-100P
DG600-60P
DG600-85P
DG650-80P
DG650-100P
DG720-60P
DG720-80P
DG720-100P
DG800-80P
DG850-100P
DG900-60P
DG1100-85P
200DG43P
More Self-balancing multistage hot water centrifugal pump at high pressure type DGP For performance parameters 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 。
