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!
The self-balancing multistage centrifugal pump type DP is a basic product of the self-balancing horizontal multistage pump series, used for transporting clean water without solid particles, with a temperature below 80°C, or liquids with physical-chemical properties similar to clean water. It is widely used in mines, factories, urban water supply and drainage projects, fire fighting water, and long-distance water transport.
As one of the recognized national manufacturers of multistage centrifugal pumps, to actively respond to the national call for energy saving and adherence 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 pumps. The self-balancing high-pressure pump type DP belongs to this series. This self-balancing pump uses a hydraulic model recommended by the state, developed according to the API610 standard, with advantages such as high energy efficiency, wide performance range, reasonable structure, good cavitation resistance, safe and stable operation, low noise, few wear parts, and easy installation and maintenance, positioning itself at the technological forefront of the industry.
The self-balancing high-pressure pump innovates the traditional structure of the multistage centrifugal pump, eliminating the axial force balancing device of common multistage pumps, and uses the mutual cancellation of the forces of the symmetrically arranged rotor components of the impeller 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. In addition, it completely eliminates failures such as wear or blockage of the disc and balancing seat due to failures of the balancing device, significantly prolonging the pump's service life. After years of use by users, our series of self-balancing horizontal multistage pumps has been shown to considerably improve reliability and efficiency compared to traditional type D multistage pumps, increasing the non-failure operating time more than three times and effectively extending the service life. This not only directly saves production costs for users but also significantly reduces operating and maintenance costs. The self-balancing multistage centrifugal pump type DP is a basic product within the series of self-balancing horizontal multistage pumps and is an excellent replacement for traditional type D multistage pumps with disc or balancing drum structure.
Self-balancing high-pressure centrifugal pump type DP Scope of application
The self-balancing high-pressure pump is suitable for transporting clean water without solid particles and liquids with similar physical-chemical properties to clean water, with a temperature below 80°C. It is widely used in mining, factories, urban water supply and drainage projects, fire-fighting water, long-distance water transport, among other fields.
Self-balancing high-pressure centrifugal pump type DP Description of the structure
The self-balancing high-pressure pump has support at both ends, the casing is segmented, and the pump transmission is connected to the motor via a cylindrical pin elastic coupling.
Direction of rotation of the pump: viewed from the drive end, the pump rotates clockwise.
Self-balancing high-pressure centrifugal pump type DP Principle and working process
1. Stator part
Mainly composed of the suction section (water inlet), middle section, discharge section (water outlet), guide vanes, secondary water inlet section, packing seal body (rear cover) and Bearing and other parts connected with tension bolts forming a unit. 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 bushings.
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 self-balancing high-pressure pump is supported by a cylindrical roller bearing according to the GB/T283-94 standard at the drive end and an angular contact ball bearing according to the GB/T292-94 standard at the opposite end. The bearings are lubricated with mechanical oil CD30 or CD40 up to the center of the oil sight glass within the bearing body. Due to the use of the angular contact ball bearing GB/T292-94, the assembled rotor does not exhibit axial displacement.
Self-balancing high-pressure centrifugal pump VS traditional multistage centrifugal pump 10 major advantages
1, New structure The self-balancing high-pressure pump has rotor components with symmetrically arranged impellers, so that the axial forces generated by the positive and negative impeller groups mutually cancel each other, eliminating the balancing disc device that presents small spaces, high pressure drop, easy erosion, wear, and failures, overcoming the traditional structure of multistage pumps;
2, New technology The self-balancing high-pressure pump has unique throttling, pressure reduction devices, and a balancing device in odd stages, which also act as auxiliary support.
3, High energy efficiency The self-balancing high-pressure water pump uses an advanced hydraulic model that resolves wear and axial pulsation caused by the balance disk, always maintaining an excellent alignment state between the impeller and the guide. During prolonged use, it also prevents significant efficiency loss caused by wear of the balance disk and forward displacement of rotor components 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 high-pressure water pump uses a self-balancing system that basically cancels the axial force load generated during the operation of the pump, 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 distribution of forces and a significant reduction in peak stress compared to the original 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 high-pressure water pump, through the excellent symmetrical combination of the impeller and the guide, along with a reasonable adjustment set and a wide axial throttling design, maintains high stability and operational efficiency even after prolonged operation.
6, Good performance against cavitation The self-balancing high-pressure water pump uses an optimized hydraulic model and structural design, with a double suction structure in the first stage of the impeller, in addition to precise casting and wear-resistant materials, which gives it good performance against cavitation. The machine operates stably and with low noise, without the user needing to install an additional pre-pump or raise the height of the inlet tank.
7, Mechanical seal High reliability: because the self-balancing high-pressure water pump does not have 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 self-balancing high-pressure water pump uses a complete three-dimensional design and CNC machining of the rotor components, strictly ensuring the dimensions and machining precision 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, providing great convenience to the user.
9, Low maintenance rate The self-balancing high-pressure water 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, reducing maintenance costs.
10, High adaptability The self-balancing high-pressure water pump uses an advanced combined modular design, with local components that have been tested in intensive use and prolonged operation. The parts have high interchangeability, eliminating the small space balance disk device, and it is more suitable than traditional structure multistage pumps for media with more adverse properties.
Comparative cost chart between self-balancing horizontal multistage pump and traditional multistage pump.
Product parameters
Description of the self-balancing high-pressure centrifugal pump model type DP
Performance parameters of the self-balancing high-pressure centrifugal pump type DP ( These data are for reference only, please take the actual order as the standard!)
D6-25P
D6-50P
D6-80P
D12-25P
D12-50P
D12-80P
D25-30P
D25-50P
D25-80P
D46-30P
D46-50P
D46-80P
D65-80P
D85-45P
D85-67P
D85-80P
D85-150P
D100-55P
D120-50P
D120-67P
D120-80P
D120-100P
D150-30P
D150-50P
D150-80P
D150-100P
D150-130P
D155-30P
D155-67P
D200-50P
D200-80P
D200-100P
D200-150P
D280-43P
D280-65P
D280-95P
D280-100P
D300-45P
D300-65P
D360-40P
D360-60P
D360-95P
D420-95P
D450-40P
D450-60P
D450-95P
D500-57P
D550-40P
D550-50P
D550-95P
D580-60P
D580-100P
D600-60P
D600-85P
D650-80P
D650-100P
D720-60P
D720-80P
D720-100P
D800-80P
D850-100P
D900-60P
D1100-85P
200D43P
More performance parameters of the self-balancing high-pressure centrifugal pump type DP Please visit 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 。
