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

language
    language
    Products
    Professionalism forges quality, innovation creates value.
    Horizontal double-suction centrifugal pump with first-stage impeller type DS
    Horizontal double-suction centrifugal pump with first-stage impeller type DS
    Horizontal double-suction centrifugal pump with first-stage impeller type DS
    Horizontal double-suction centrifugal pump with first-stage impeller type DS
    Horizontal double-suction centrifugal pump with first-stage impeller type DS
    Horizontal double-suction centrifugal pump with first-stage impeller type DS
    +
    • Horizontal double-suction centrifugal pump with first-stage impeller type DS
    • Horizontal double-suction centrifugal pump with first-stage impeller type DS
    • Horizontal double-suction centrifugal pump with first-stage impeller type DS
    • Horizontal double-suction centrifugal pump with first-stage impeller type DS
    • Horizontal double-suction centrifugal pump with first-stage impeller type DS
    • Horizontal double-suction centrifugal pump with first-stage impeller type DS

    Category:

    Horizontal multistage centrifugal pump

    Keywords:

    Pump

    Share on

    Horizontal double-suction centrifugal pump with first-stage impeller type DS

    Flow: 3.6-1349m³/h

    Lift height: 47-1800m

    Efficiency: 33%-83%

    Pump weight: 77-3750kg

    Cavitation margin: 2.0-7.0m

    Motor power: 3.1-1120kw

    Price: 0.69-10.77 thousand

     

    The first-stage double-suction horizontal centrifugal pump type DS is a new development by the technical team of Changsha Zhonglian Pump Industry, designed for high cavitation resistance in horizontal multistage centrifugal pumps. Compared to common single-suction horizontal multistage centrifugal pumps, the impeller of the first stage of this pump has a double-suction design. Its appearance does not differ from the common single-suction horizontal multistage centrifugal pump, and its main advantage lies in the double-suction impeller in the first stage. According to the performance test results of this pump, the average cavitation resistance is more than 20% higher than that of single-suction multistage pumps, which improves efficiency.

    +86 0731-88192288

    Customer service hotline

    info@cipump.com

    Email

    Recommended
    Online Inquiry
    Product Description Product Specifications Why Choose Us? FAQ

    Product summary

    The DS type initial stage double-suction horizontal centrifugal pump is a new development by the technical team of Changsha Zhonglian Pump Industry, designed for high cavitation resistance in horizontal multistage centrifugal pumps. Compared to common single-suction horizontal multistage centrifugal pumps, the impeller of the first stage of this pump is double-suction design. Its appearance does not differ from the common single-suction horizontal multistage pump, but its main advantage lies in the double-suction first stage impeller. According to performance test results of this pump, the average cavitation resistance is more than 20% higher than that of single-suction multistage pumps, and efficiency also improves significantly, meeting the needs of customers with higher requirements for cavitation performance and energy consumption.

     

     

            The DS type initial stage double-suction horizontal centrifugal pump features high efficiency, wide performance range, safe and stable operation, low noise, long service life, and easy installation and maintenance. Model selection is determined according to the lift height required by the user. Our company is a veteran manufacturer of multistage pumps, located in the star city of Changsha, independently established after the restructuring of Zhonglian Pump Industry, with more than 30 years of experience in research, development, and manufacturing of multistage pumps. With strong technical strength, extensive production experience, comprehensive testing methods, and a professional design and engineering team, we have evolved into a national high-tech enterprise specializing in multistage pump equipment. All our multistage pumps are computer-designed and optimized, ensuring stable and reliable quality.

     

           Image 1   Scope of application of the DS type initial stage double-suction horizontal centrifugal pump

     

    Suitable for transporting clean water with temperatures between -20℃ and 80℃ or media with stable physicochemical properties, with insoluble solids not exceeding 0.1% by volume and particle size ≤ 2 mm, similar to water. Besides conventional clean water transport, the type D horizontal multistage pump is also commonly used in high-pressure cleaning, high-pressure reverse osmosis water transport, being a common pump for high-pressure cleaning and high-pressure water pump for reverse osmosis.

     

           Image 1   Structural diagram and composition of the DS type initial stage double-suction horizontal centrifugal pump

    　　

    Structural diagram of multistage pump 　

     

           Image 1   Technical characteristics of the DS type initial stage double-suction horizontal centrifugal pump

    1. High efficiency and energy saving: with specialized production, we have unique methods in model selection, mold making, and casting of hydraulic components for the type D horizontal multistage pump. All flow path components are precisely cast, ensuring dimensions and channel finish, exceeding common multistage pumps on the market by more than 2% on average, achieving good energy-saving effects;

    2. Advanced equipment and processes: to ensure assembly performance of the type D horizontal multistage pump, we import advanced foreign parts cleaning equipment. Each part is carefully cleaned before final assembly. Besides normal material, hydrostatic pressure, and static balance tests, all rotor components of pumps with more than 6 stages are inspected after partial assembly to control shaft runout within 0.05 mm, then dynamic balance test G2.5 is performed. After complete assembly, shaft runout and coupling are rechecked, ensuring assembly quality;

    3. Unique structure: the type D horizontal multistage pump adds a 0-type sealing ring between the balance ring and the pump coupling surface to prevent high-pressure water from entering the balance chamber, affecting the balance effect of the balance disc, reducing its wear and prolonging product life. For pumps with diameter above DN200, a balance disc wear indicator is installed at the shaft end to monitor wear of the disc or balance ring and allow timely replacement, ensuring normal equipment operation;

    4. Reduction of starting torque: the horizontal multistage centrifugal pump has low starting torque, which helps reduce the load on the equipment at startup, decreasing costs and potential risks;

    5. Good cavitation resistance: the special double-suction structure of the first stage impeller, combined with precise casting, provides this pump with good cavitation resistance, stable operation, and low noise.

     

         Image 1 Structural description of the DS type initial stage double-suction horizontal centrifugal pump

    　1. The DS type initial stage double-suction horizontal centrifugal pump is a segmented centrifugal pump with a double-suction impeller in the first stage. The inlet can be horizontal or vertical upwards. The pump casing parts, such as the inlet, middle, and outlet sections, are connected by tie bolts forming an assembly. Both ends have bearing components and the number of stages is selected according to the lift height;

    2. The rotor part of this pump series mainly consists of the shaft and parts mounted on it, such as the impeller, shaft sleeve, and balance disc. The number of impellers depends on the number of pump stages. Shaft parts are fixed to the shaft by keys and nuts to form an assembly;

    3. The entire rotor is supported by ball or sliding bearings at both ends. The bearing type varies by model, none support axial force, axial force is balanced by the balance disc. A balance disc wear indicator is installed at the pump end to monitor its wear;

    4. The sealing surfaces between the inlet, middle, and outlet sections of the pump use sealant or "O" rings. Between the rotating and fixed parts there are sealing rings and guide sleeves for sealing. When wear affects pump performance, they should be replaced timely;

    5. The shaft seal can be mechanical or packing. When packing is used, the packing ring placement must be correct and tension appropriate to allow slight dripping. Sealing elements are installed in the sealing chamber, where pressurized water is introduced for sealing, cooling, or lubrication;

    6. During operation, the rotor can move axially within the casing. The type D horizontal multistage pump generally uses ball bearings with dry lubrication (models DVDG85-67, D/DG155-67 can use sliding bearings with light oil lubrication or ball bearings with dry lubrication).

    7. The double-suction horizontal centrifugal pump with a first-stage DS type impeller is directly driven by the primary motor through an elastic coupling. From the direction of the primary motor, the pump rotates clockwise. The standard motor configuration is the Y3 series, and in environments with combustible and explosive gases, the explosion-proof motor of the YB3 series is used.

    8. If you have special requirements regarding the materials and structure of the double-suction horizontal centrifugal pump with a first-stage DS type impeller, you can negotiate with our company. Our professional technical staff can customize the passage material, configuration, and the pump's inlet and outlet direction according to your needs, ensuring that your working conditions are met.

     

     

    Image of the multistage pump usage site

     

    Production process

     

         Image 1   Precautions for the use of the double-suction horizontal centrifugal pump with a first-stage DS type impeller

    Multistage centrifugal pumps must operate under design conditions. If the head during operation exceeds the specified range for a prolonged period, it will affect the safety of the entire piping system and will not be economical. If the head is below the specified range, that is, when the multistage pump is used under high flow and low head conditions, especially for multistage pumps with low rotational speed, the shaft power will increase rapidly, causing motor overload and possible damage. When the flow increases, the maximum allowable suction head for the pump decreases with the increase in flow, which can cause cavitation in the multistage pump, significantly affecting its performance and reducing economic efficiency. Therefore, when using multistage pumps, the head must not be lower than the specified operating conditions.

    Product Parameters

    Description of the horizontal double-suction centrifugal pump model with first-stage impeller type DS

     

     

     

    Performance parameters of the horizontal double-suction centrifugal pump with first-stage impeller type DS (These data are for reference only, please consider the actual order as the standard!)

     

    DS6-25

    DS6-50

    DS6-80

    DS12-25

    DS12-50

    DS12-80

    DS25-30

    DS25-50

    DS25-80

    DS46-30

    DS46-50

    DS46-80

    DS85-45

    DS85-67

    DS85-80

    DS85-100

    DS120-50

    DS120-100

    DS150-30

    DS150-50

    DS150-80

    DS150-100

    DS155-30

    DS155-67

    DS200-50

    DS200-100

    DS200-150

    DS210-70

    DS280-43

    DS280-65

    DS280-95

    DS280-100

    DS300-45

    DS360-40

    DS360-60

    DS360-95

    DS450-60

    DS450-95

    DS500-57

    DS550-50

    DS580-60

    DS640-80

    DS720-60

    DS1100-85


    For more performance parameters of the horizontal double-suction centrifugal pump with first-stage impeller type DS, please download the intelligent selection software on the pump selection page or call: 0731-88192288 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 。

    Recommended Products

    Online Inquiry

    Attention: Please leave your contact information, our professional staff will contact you as soon as possible!

    Inquire Now