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

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    Multistage horizontal pump of type DKS with split casing half (BB3)
    Multistage horizontal pump of type DKS with split casing half (BB3)
    Multistage horizontal pump of type DKS with split casing half (BB3)
    Multistage horizontal pump of type DKS with split casing half (BB3)
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    • Multistage horizontal pump of type DKS with split casing half (BB3)
    • Multistage horizontal pump of type DKS with split casing half (BB3)
    • Multistage horizontal pump of type DKS with split casing half (BB3)
    • Multistage horizontal pump of type DKS with split casing half (BB3)

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    Medium opening pump

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    Pump

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    Multistage horizontal pump of type DKS with split casing half (BB3)

    Flow: 18-1350m³/h

    Lift height: 20-2080m

    Motor power: 75-2800kw

    Price: 15-120W

    NPSH: 2.8-5m

    Pump weight: 500-2000kg

     

    The DKS series of horizontal split-case multistage centrifugal pumps is a multistage pump manufactured by Changsha Zhonglian Pump Industry. The API BB3 model is a centrifugal pump used in heavy industries such as oil and chemical, complying with the API 610 standard of the American Petroleum Institute. It is a double-suction centrifugal pump, with axial split and symmetrical design of multistage impellers. This pump is designed to handle high flows and high pressures

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    Product Description Product Specifications Why Choose Us? FAQ

    Product Description

    The DKS series of horizontal multistage split casing centrifugal pumps is a type of double-suction pump, with axial split and symmetrical arrangement of multistage impellers, developed and produced by Changsha Zhonglian Pump Industry according to the BB3 structure pump type of API 610 standard by the American Petroleum Institute. This pump is designed to handle high flow and high pressure conditions and is commonly used in heavy industrial applications requiring high reliability, such as oil refining, chemical processing, and power generation.

     

     

     

    Structural features of the DKS series of horizontal multistage split casing centrifugal pumps

    Axial split casing, full pressure double volute structure, central balance inline installation that equalizes pressure in the two sealing chambers.

    1. Precision casting: closed impeller, dynamic balance, circular movement of the impeller to prevent horizontal displacement.

     

    2. Wear-resistant ring: wear-resistant ring of the impeller, fixed with axial screws.

     

    3. Shaft: sufficient dimensions to meet strict dynamic and shaft power transmission requirements.

     

    4. Sealing chamber: meets API 682 requirements, can use single or double mechanical seals.

     

    5. Sleeve: minimizes internal flow between the high-pressure and low-pressure ends.

     

    6. Bearing chamber: lubrication with pure oil or purified oil as required. The bearing cover is equipped with a bearing separator. The drive end uses roller bearings, the non-drive end uses angular contact bearings, standard configuration. Other optional configurations.

     

    7. Symmetrical arrangement of impellers: up to 14 impeller stages.

     

    8. Special impeller design: for low NPSHA applications, double-suction impellers can be customized to meet working conditions.

     

    9. Special bearing design

    1. To meet all customer needs, we can offer other bearing designs:

    2. Heavy thrust axial bearing configuration

    3. Thrust bearing design with forced lubrication for high axial loads

    4. Radial sleeve bearings to support higher radial loads.

     

    10. Bearing cooling

    1. Standard is air cooling, other cooling methods optional.

    2. Can be mounted on sliding rails.

    3. The pump sliding rails can be specially designed according to customer requirements. Rails may include sealing systems, cooling piping plans, controllers, monitoring instruments, seals, lubrication systems, and other instruments (as required). The base can also be customized to meet specific customer requirements.

    4. Rotation direction: can be clockwise or counterclockwise.

    5. Flanges: ANSI flanges, but flanges meeting other standards (DIN, JIS, etc.) can also be provided as required.

     

    DKS series of horizontal multistage split casing centrifugal pumps Structural diagram

    Product advantages of the DKS series of horizontal multistage split casing centrifugal pumps

    1. High efficiency: the double-suction design provides high flow and high-pressure output, optimizing pump performance.

    2. Corrosion resistance: selected materials with high resistance to corrosion and wear to suit harsh operating environments.

    3. Stability: pump design reduces vibration and noise, improving operational stability and reliability.

    4. Easy maintenance: structural design facilitates maintenance and repair, reducing downtime and maintenance costs.

    5. Wide applicability: capable of handling various fluids, including corrosive, viscous liquids and those with solid particles.

    6. Casing structure: horizontal pump, support at both ends, single-layer volute type casing, axial split (also called horizontal split casing) multistage centrifugal, support near the centerline. The casing consists of two parts, upper and lower, joined by several bolts around the casing for easy maintenance.

    7. Impeller configuration: depending on different suction conditions, the first stage impeller can be configured as single or double suction. The impellers are divided into two groups, separated by a central sleeve or seal.

    8. Force balance design: radial force balance of the pump is achieved with double volute design; axial force balance is achieved by the double-suction impeller in the first stage and the remaining impellers mounted back-to-back (or all single-suction impellers mounted back-to-back), without the need for additional axial balance mechanisms. The residual axial force is supported by the thrust bearing.

    9. Bearing configuration: depending on pump size (load), radial bearings can be rolling or lubricated; thrust bearings can be angular contact ball bearings mounted back-to-back or tapered roller bearings. Lubrication method can be self-lubrication with fine oil, oil mist lubrication, or pressure oil lubrication.

    10. Cooling method: depending on different usage conditions and pump size, bearings can be cooled with natural air fins, fan cooling, water jacket cooling, or coil cooling.

    Application areas of the DKS series of horizontal multistage split casing centrifugal pumps

    • Petroleum industry: for crude oil transportation, oil processing, and liquid transport in petrochemical processes.
    • Chemical industry: for chemical product transportation and fluid handling in chemical reaction processes.
    • Power generation: for cooling water transport in power plants, fuel transport, etc.

    Product Parameters

    Technical parameters of the medium open type horizontal multistage centrifugal pump series DKS

    • Flow rate: 17-1250m³/h (50Hz) 20-1500m³/h (60Hz)
    • Manometric height: 21-2083m (50Hz) 30-3000m (60Hz)
    • Temperature: -80 °C to 200 °C
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    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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