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

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    Multistage horizontal centrifugal pump with API structure (BB4)
    Multistage horizontal centrifugal pump with API structure (BB4)
    Multistage horizontal centrifugal pump with API structure (BB4)
    Multistage horizontal centrifugal pump with API structure (BB4)
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    • Multistage horizontal centrifugal pump with API structure (BB4)
    • Multistage horizontal centrifugal pump with API structure (BB4)
    • Multistage horizontal centrifugal pump with API structure (BB4)
    • Multistage horizontal centrifugal pump with API structure (BB4)

    Category:

    API610 Series Chemical Pumps

    Keywords:

    Pump

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    Multistage horizontal centrifugal pump with API structure (BB4)

    Flow: 3.75-1345m³/h

    Lift height: 50-1801m

    Efficiency: 33% -83%

    Pump weight: 79-3750kg

    Cavitation margin: 2.0-7.0m

    Motor power: 3.2-1120kw

    Price: 14600-264000

     

    The efficient and energy-saving hydraulic model recommended by the state is used, which has the advantages of high energy efficiency, wide performance range, safe and stable operation, low noise, long service life, and easy installation and maintenance; by changing the pump material (or the material of the pump passage part), the sealing form, and adding a cooling system, it can transport hot water, oils, corrosive and abrasive media, among others.

    +86 0731-88192288

    Customer service hotline

    info@cipump.com

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    Product Description Product Specifications Why Choose Us? FAQ

    Product summary

            The API structure (BB4) horizontal multistage centrifugal pump is a single-suction, multistage, segmented centrifugal pump designed and manufactured by our company according to the API 610 standard. It is a high-quality horizontal centrifugal pump used in the petrochemical industry, suitable for transporting oily media such as crude oil, diesel, and aviation kerosene, as well as chemical raw materials like lean amine solutions and ammonia water. It is widely used in the petroleum and chemical industries, especially in the coal chemical industry. The assembly quality of this type of pump significantly impacts its performance, especially the relative position between the outlet of each impeller and the inlet of the guide vanes. If the assembly is good, this pump offers advantages such as high energy efficiency, wide performance range, safe and stable operation, low noise, long service life, and ease of installation and maintenance. By changing the pump material (or flow path), the sealing type, and adding a cooling system, it can transport petroleum and petroleum products with viscosity less than 120 cSt without solid particles, as well as hot water, oils, corrosive and abrasive media, and can be used for acid drainage in mining. The medium temperature ranges from -20℃ to 150℃, the allowable inlet pressure is 0.6MPa, and the lift height can be adjusted by increasing or decreasing the number of pump stages.

        Changsha Zhonglian Pump Industry Horizontal Multistage Oil Pump

             Image 1 Structural diagram and description of API structure (BB4) horizontal multistage centrifugal pump

     

    Structural diagram of horizontal multistage centrifugal pump

    　　
     
     
    1. Pump casing part 
    　　The pump casing part mainly consists of the bearing, front section, middle section, rear section, and guide vanes, connected together with bolts. The centerline of the suction inlet in the front section is horizontal, while the centerline of the outlet in the rear section is vertical. 
    　　2. Rotor part 
    　　The rotor part mainly consists of the bearing and the parts mounted on the shaft, such as the impeller, shaft sleeve, and balance disc. The parts on the shaft are fixed with keys and sleeve nuts to form a unit with the shaft. The entire rotor is supported by bearings at both ends inside the pump casing. The number of impellers in the rotor part depends on the number of pump stages. 
    　　3. Bearing part 
    The shaft bearings of this type D pump can be sliding or rolling bearings, depending on the model, and do not support axial forces. During operation, the rotor part must be allowed to move axially within the pump casing; centered bearings should not be used. 
    　　4. Pump sealing 
    　　The sealing surfaces between the front, middle, and rear sections of the pump use molybdenum disulfide lubricating grease. The sealing between the rotating and fixed parts is achieved by sealing rings, guide vane sleeves, and packing. When the wear of the sealing rings and guide vane sleeves affects the pump's operation and performance, they should be replaced in time. 
    　　5. Balancing mechanism 
    　　The balancing mechanism consists of balance rings, balance discs, and balance sleeves, and is used to balance the axial force of the pump. The pump is supplied as a complete set, including explosion-proof motor, common base or own base, check valve, gate valve, and spare parts. 

    6. Inlet and outlet: The 100DY16 model horizontal multistage centrifugal pump has horizontal suction and vertical discharge; other multistage pumps have vertical suction and discharge.

    　　7. Oil seal: mechanical seal or packing can be used, with cooling on the shaft seal.

    　　8. Bearing type and lubrication: Sliding bearings with forced circulation lubrication are used in the DY850-125 model pump; sliding bearings with oil ring splash lubrication are used in DYⅠ85-67, DYⅠ155-67, and DYⅡ155-67 model pumps; other pumps use rolling bearings with grease lubrication.

    　　9. Support: The DYⅡ155-67 model pump has a central support, other pumps have foot supports.

    10. Rotation direction: The DY type multistage centrifugal pump rotates clockwise when viewed from the motor end. 
    　11. Scope of supply: The pump is supplied as a complete set, including explosion-proof motor, common base or own base, check valve, gate valve, and spare parts. 
     
     
    Image of multistage pump usage site
     
     
    Production process
     
     
     

           Image 1   Precautions for using the API structure (BB4) horizontal multistage centrifugal pump

            When the multistage pump operates under design conditions, if the lift height exceeds the specified range for a prolonged time, it will affect the safety of the entire piping system and be uneconomical. If the lift height is below the specified range, that is, when the multistage pump is used under high flow and low lift conditions, especially in multistage pumps with low rotational speed, the shaft power will increase rapidly, which may cause motor overload and easily burn it out. When the flow increases, the maximum allowable suction height for the pump decreases, which may cause cavitation, significantly affecting pump performance and reducing operational economy. Therefore, when using multistage pumps, the lift height should not be lower than the specified operating conditions.

    Product parameters

    Description of the multistage horizontal centrifugal pump model with API structure (BB4)

     

     

    Performance parameter table of the multistage horizontal centrifugal pump with API structure (BB4)

    DY/DG/DF/MD6-25

    DY/DG/DF/MD6-50

    DY/DG/DF/MD6-80

    DY/DG/DF/MD12-25

    DY/DG/DF/MD12-50

    DY/DG/DF/MD12-80

    DY/DG/DF/MD25-30

    DY/DG/DF/MD25-50

    DY/DG/DF/MD25-80

    DY/DG/DF/MD46-30

    DY/DG/DF/MD46-50

    DY/DG/DF/MD46-80

    DY/DG/DF/MD85-45

    DY/DG/DF/MD85-67

    DY/DG/DF/MD85-80

    DY/DG/DF/MD85-100

    DY/DG/DF/MD120-50

    DY/DG/DF/MD120-100

    DY/DG/DF/MD150-30

    DY/DG/DF/MD150-50

    DY/DG/DF/MD150-80

    DY/DG/DF/MD150-100

    DY/DG/DF/MD155-30

    DY/DG/DF/MD155-67

    DY/DG/DF/MD200-50

    DY/DG/DF/MD200-100

    DY/DG/DF/MD200-150

    DY/DG/DF/MD210-70

    DY/DG/DF/MD280-43

    DY/DG/DF/MD280-65

    DY/DG/DF/MD280-95

    DY/DG/DF/MD280-100

    DY/DG/DF/MD300-45

    DY/DG/DF/MD360-40

    DY/DG/DF/MD360-60

    DY/DG/DF/MD360-95

    DY/DG/DF/MD450-60

    DY/DG/DF/MD450-95

    DY/DG/DF/MD500-57

    DY/DG/DF/MD550-50

    DY/DG/DF/MD580-60

    DY/DG/DF/MD640-80

    DY/DG/DF/MD720-60

    DY/DG/DF/MD1100-85

    For more performance parameters of the DY type multistage horizontal oil pump, please directly download the intelligent selection software on the water pump selection page 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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