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

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    Single screw pump type G
    Single screw pump type G
    Single screw pump type G
    Single screw pump type G
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    • Single screw pump type G
    • Single screw pump type G
    • Single screw pump type G
    • Single screw pump type G

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    Single screw pump type G

    Flow: 0.8-150m³/h 
    Lifting height: 60-120m 
    Power: 0.75-37kw 
    Rotational speed: 400-960r/min 
    Pressure: 0.6-1.2MPa 
    Price: 0.11-5.26 ten thousand 

    The G type screw pump is a volumetric rotary pump with internal gears. When the single screw rotor rotates planetarily around the stator axis within the double screw stator hole, the closed cavity formed between the rotor and the stator continuously transports the medium from the suction inlet to the outlet in a uniform and constant volume.

    +86 0731-88192288

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    info@cipump.com

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    Product Description Product Specifications Why Choose Us? FAQ

    Product Description

    　　Single screw pumps have been widely used in developed countries, and abroad most refer to them as "MONOPUMPS" (single pumps), in Germany they are called "eccentric rotor pumps". Due to their excellent performance, in recent years their application in the country has also rapidly expanded.

    　　The main feature of the G type single screw pump is its strong adaptability to the medium, stable flow, low pressure pulsation, and high self-priming capacity, which cannot be replaced by any other type of pump.

    　　Our company has analyzed and studied the single screw pumps produced abroad (such as Germany, the United Kingdom, France, Japan, etc.) and domestic products in the same sector, learning from their strengths to continuously innovate our own products. Currently, our products form a proprietary system, with pressures ranging from 0.6 to 1.2 MPa, and under special requirements can reach up to 3 MPa, satisfying the diverse needs of single screw pump users.

    　　The screw pumps we produce are of reliable quality, we offer a three-year warranty, relatively low prices, and ensure the normal supply of spare parts.

    　　Our company is dedicated to serving users, accepting the design and manufacture of single screw pumps with special requirements.

    Product parameters

    Meaning of the single screw pump model type G:

    Structural characteristics of the single screw pump type G:

     

    　　1 outlet, 2 traction rod, 3 stator, 4 screw shaft, 5 universal joint assembly, 6 suction inlet, 7 connection shaft, 8 packing seat, 9 packing glands, 10 bearing seat, 11 bearing cover, 12 electric motor, 13 coupling, 14 shaft sleeve, 15 bearing, 16 transmission shaft, 17 base

     

    　　 Transport mode:

    　　The type G screw pump is a rotary volumetric pump with internal gears. When the single screw rotor rotates planetarily within the double helix stator hole around the stator axis, the closed cavity formed between the rotor and the stator continuously transports the medium from the suction inlet to the outlet at a constant speed and with a constant volume. Due to these characteristics, the single screw pump is especially suitable for the following working conditions:

    　　Transport of high viscosity media. The viscosity of the medium can vary according to the pump speed, and materials with viscosity of up to 1,000,000 CPS can be effectively transported. The pressure can reach 0.6, 1.2, 1.8, 2.4. The temperature of the transported medium is below 80℃ (can reach 150℃ under special requirements).

    　　Media containing solid particles or fibers. The maximum particle size can be up to 20 mm (does not exceed the rotor eccentricity), the maximum fiber length can be up to 150 mm (equivalent to 0.4 times the rotor pitch), the solid content can generally reach 30%, and when the solids are fine powder particles, it can reach up to 70% or more.

    　　Requires continuous transport with stable pressure, without periodic pulsations typical of reciprocating pumps.

    　　Requires transport with little agitation, without cutting the original structure of the transported medium.

    　　The transmission can adopt direct drive coupling, or use variable speed motor, V-belt, gearbox or other devices to vary the speed.

    　　The flow rate is linearly proportional to the speed, allowing for easy adjustment of the flow rate by adjusting the speed to control the flow.

    　　Please note:

    　　1. The test data in the performance table is based on clean water at 20℃, with a viscosity of 1 mm2/s.

    　　2. When the pump transports high viscosity media or those with particles, the pump speed must be adjusted according to the nature of the medium.

    　　3. When the pump transports media with different abrasive properties, the pump speed must also be adjusted.

    　　

             Performance characteristics:

    　　· Maximum suction height up to 6 meters of water column

    　　· Can rotate in both directions, bidirectional transport (requires reversible stator)

    　　· Flexible installation.

    　　· Smooth, stable operation, low noise, no pulsations, no cutting.

    　　· Temperature range of the transported medium: -20℃ to +150℃

    　　· The single screw pump has few parts, compact structure, small size, easy maintenance. The rotor and stator are the wear parts of this pump, with a simple structure and easy to disassemble. The transmission can adopt direct coupling or use variable speed motor, V-belt, gearbox or other devices to vary the speed. Different screw pumps have different specific applications.

     

    Scope of application of the single screw pump type G:

    　　In general, the single screw pump can be used as a universal pump. The operating speed can be high or low. The nominal output pressure of the stainless steel screw pump can increase with the number of stages; each additional stage increases the pressure by 0.6 MPa, so it has a wide range of use.

    　　1. Environmental protection: transport of industrial wastewater, domestic sewage, muddy sludges containing solid particles and short fibers. Especially suitable for water-oil separators, plate and frame filter presses, and other equipment.

    　　2. Shipbuilding industry: hull cleaning, transport of media such as water and oil, oil waste, oily water, etc.

    　　3. Oil industry: transport of crude oil. In recent years, it has successfully suctioned mixtures of crude oil and water at depths of kilometers underground, mixtures of gas from coal mines and water, significantly reducing the mechanical extraction costs of oil and gas from coal mines. In the late stage of oil fields, the screw pump is used to inject polymers into the reservoir and increase oil recovery.

    　　4. Pharmaceutical and daily chemical industry: transport of various viscous pastes, emulsions, various cosmetic creams, etc.

    　　5. Food canning industry: transport of various viscous starches, edible oils, honey, syrups, fruit pulps, creams, fish pastes and their by-products.

    　　6. Brewing industry: various fermented viscous liquids, concentrated liquor dregs, waste grain products, various sauces, pastes and mucilages containing block solids.

    　　7. Construction industry: spraying and transporting cement mortar, lime slurry, paints and other pastes.

    　　8. Mining industry: transport of groundwater and sludges containing solid particles in mines to the surface.

    　　9. Chemical industry: various suspensions, greases, various colloidal pastes, various adhesives.

    　　10. Printing and paper industry: transport of high viscosity inks, PVC glues for wallpaper, and paper pulps of various concentrations, as well as short fiber pulps.

    Performance parameter table:

    Model Speed
    r/min    		 Flow rate
    m3/h    		 Pressure
    MPa     		Motor
    KW     		Elevation height
    m     		Input Output
    mm     		Allowed particle diameter
    mm     		Allowed fiber length
    mm
    G20-19600.80.60.7560Dy25Dy251.525
    G25-196020.61.560Dy32Dy25230
    G25-296021.22.2120Dy32Dy25230
    G30-l96050.62.260Dy50Dy402.535
    G30-296051.23120Dy50Dy402.535
    G35-19608 0.6 360Dy65Dy50340
    G35-296081.24120Dy65Dy50340
    G40-l960120.6460Dg80 Dg 653.845
    G40-2960121.25.5120Dg80 Dg 653.845
    G50-l960200.65.560Dg100Dy80550
    G50-2960201.27.5120 DylOO Dy80550
    G60-l960300.61160Dyl25 DylOO 660
    G60-296030l.215120Dyl25 DyOO 660
    G70-l720450.61160 D y l50Dyl25870
    G70-272045I.218.51200yl50Dyl25870
    G85-1720650.61560Dyl50Dyl501080
    G105-15001000.62260Dy200Dy20015110
    Gl35-l4001500.63760Dy250Dy25020150
     

    Friendly reminder ： For performance parameters, please go directly to Water pump selection Page for direct consultation

    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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