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

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    QW Type High-Efficiency Non-Clogging Submersible Sewage Pump
    QW Type High-Efficiency Non-Clogging Submersible Sewage Pump
    QW Type High-Efficiency Non-Clogging Submersible Sewage Pump
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    • QW Type High-Efficiency Non-Clogging Submersible Sewage Pump
    • QW Type High-Efficiency Non-Clogging Submersible Sewage Pump
    • QW Type High-Efficiency Non-Clogging Submersible Sewage Pump

    Category:

    Sewage Pump

    Keywords:

    Pump

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    QW Type High-Efficiency Non-Clogging Submersible Sewage Pump

    Flow: 10-4500m³/h

    Head: 5-45m

    Efficiency: 38%-85%

    Power: 1.1-280kw

    Speed: 740-2900r/min

    Pump Weight: 42-2800kg

    Price: 0.081-81,500

     

    The QW type non-clog sewage pump is a high-efficiency non-clog submersible sewage pump developed by Zhonglian Pump Industry, a manufacturer of sewage pumps. It is also a sewage pump with an automatic coupling device, featuring an integrated pump and motor, a bottom pump structure, and a large channel impeller flow passage design; it has an attractive appearance, reasonable design, excellent performance, low price, easy maintenance, wide operating conditions, durability, safety, and reliability.

    +86 0731-88192288

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    info@cipump.com

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    Product Description Product Specifications Why Choose Us? FAQ

    Product Overview

    The QW type non-clog sewage pump is a high-efficiency non-clog submersible sewage pump developed by Zhonglian Pump Industry, a manufacturer of sewage pumps. It is a hydraulic machine with the motor and pump coaxially integrated and submerged in the medium. This product features advanced structure, wide flow passage, and strong sewage discharge capacity. The pump handles media with temperatures not exceeding 50℃, pH=4~10, solid particle diameters of 15-110mm, and fiber lengths up to 5 times the inlet diameter; it is widely used in municipal engineering, construction projects, factory and mine sewage discharge, as well as sewage discharge in hospitals, hotels, and residential areas.

    The non-clog sewage pump adopts an integrated pump and motor design with a bottom pump structure and a large channel impeller flow path design; it has an attractive appearance, reasonable design, excellent performance, easy maintenance, wide operating conditions, durability, safety, and reliability. The QW type pump is based on the WQ pump and uses an external cooling water jacket, allowing the pump to be self-cooled by water and capable of running dry.

     

    Application Scope and Operating Conditions of QW Type High-Efficiency Non-Clog Submersible Sewage Pump

    The QW type non-clog submersible sewage pump is suitable for conveying liquids containing sand, coal slag, tailings, fibers, and other debris. It is mainly used in metallurgy, mining, thermal power plants, construction sites, sewage treatment plants, and sewage treatment pools for sewage removal and transportation. It is an ideal replacement for traditional sewage pumps.

    Operating Conditions:

    1. Medium temperature does not exceed 50℃, density is 1.0-1.3kg/m³, and pH value is within the range of 5~9.

    2. For pumps without an internal self-circulating cooling system, the motor part exposed above the liquid surface should not exceed half.

    3. Generally, the pump must be used within the specified head range to ensure the motor is not overloaded. If it needs to be used across the full head range, it should be specified when ordering.

    4. During operation, the motor current must not exceed the motor's rated current.

     

    Structural Features of QW Type High-Efficiency Non-Clog Submersible Sewage Pump

    The QW sewage pump mainly consists of a base, pump body, impeller, and submersible motor; it adopts a unique large-channel impeller structure, greatly improving the ability to pass debris; it uses an internal self-circulating system to cool the motor part with the medium, making it safer and more reliable. According to user requirements, it can be equipped with stator winding temperature protection, bearing temperature protection, oil chamber water leakage protection, etc., to enhance the safety of the electric pump; it uses a specially designed submersible motor with F-class insulation, capable of safe operation under harsh conditions; it can be installed with a dual-rail automatic coupling device, making installation and maintenance of the unit convenient and fast.

    Pump body and impeller: carefully selected and matched pump body and impeller ensure good flow passage performance, high efficiency, flat power curve, and resistance to overload. The impeller is precisely balanced, with low vibration and smooth rotation.

    Motor: specially designed submersible motor, IP68 protection, F-class insulation allowing high temperature rise, with good submersible cooling effect, resulting in lower actual temperature rise and longer motor insulation life.

    Motor cooling: the motor's heat is dissipated through the casing; the medium must submerge at least half of the motor stator casing for reliable and safe operation. Motors with water jackets allow dry running.

    Shaft seal: uses a combination of two independent mechanical seals and a hydrodynamic seal (patented technology), ensuring safety and no leakage. The motor shaft seal uses two to three sets of mechanical seals in series, forming multiple reliable barriers. One is in the pump medium, effectively preventing water from entering the oil chamber; the other two are in the oil chamber, preventing oil from entering the motor.

    Transmission: viewed from the motor end, the pump rotates clockwise.

    The QW series submersible sewage pumps have two installation types: mobile and fixed automatic installation. In the mobile installation type, the pump is supported by the base, and the outlet elbow is directly connected to a flexible hose, which is simple and convenient, allowing the pump to be easily moved to different sites. This type is limited to pumps below 75kW. In the fixed installation type, the pump is connected to a coupling device, with the coupling base fixed at the bottom of the pump pit. The pump can move up and down along the guide rails. When the pump is lowered, the coupling device automatically couples with the coupling base; when lifted, the pump automatically disengages from the coupling base.

    Oil chamber: the oil chamber is filled with suitable mechanical oil and equipped with two mechanical seals. The oil chamber acts as a barrier preventing the medium from entering the motor through the pump shaft, blocking medium infiltration into the motor. If the first seal leaks, the oil chamber buffers the medium, preventing direct entry into the motor. It also lubricates and cools the friction surfaces of the two independent seals, making the seals more reliable. Additionally, it dissipates heat from the lower bearing and some motor heat.

    Bearings: the lower bearing provides reliable support for the motor pump shaft. Considering the radial, axial forces, and pulsating loads generated during pump operation, the lower bearing can consist of one to three sets of different bearing types to ensure smooth operation and longer service life of the unit.

    Cable and its sealing:

    A. The cable is a sewage-resistant rubber-sheathed flexible cable. The cable core interface is designed for long-term reliable operation at 40℃ ambient temperature and full motor load power. If the pump operates under less than full load or below 40℃ ambient temperature, the service life is longer.

    B. There is a sealing and pressing device between the cable rubber sheath and the motor gland to prevent medium from seeping into the motor cavity through the cable and motor gland interface.

    C. The cable sheath and core are vulcanized with rubber, effectively preventing medium from entering the motor through the cable sheath.

    Motor housing: The motor housing consists of the frame, bearing seat, motor cover, etc. Each part is connected with a reliable static seal. Every unit undergoes a strict hydrostatic pressure test to ensure its watertightness.

    Internal safety protection of the electric pump (upon customer request):

    A. Water leakage probe: Installed inside the oil chamber. When the leaking medium reaches a certain level in the oil chamber, an alarm signal is triggered.

    B. Thermal sensitive element: Installed inside the motor stator winding. If the motor is overloaded for a long time, the temperature of the motor winding (or heating caused by other reasons)... 
    When it reaches a certain value, an alarm signal is issued.

    External control system (user can provide):

    This non-clogging sewage pump can be equipped with an automatic water level control device, intermediate terminals, and a fully automatic protection control cabinet according to user requirements. The dedicated electric control cabinet can process various signals inside the pump to achieve functions such as control, protection, audible and visual alarms, and various automatic controls for single or multiple pumps.

    Performance curve and main parameters: The curve on the performance chart indicates the recommended applicable range of the pump. When the pump's flow medium changes, attention must be paid to ensure the shaft power during use is within the motor's rated power range. Overload use may cause motor burnout.

    Product Parameters

    Performance Parameters of QW Type High-Efficiency Non-Clogging Submersible Sewage Pump

    Model

    Flow Rate

    Head

    Efficiency

    Shaft Power

    Speed

    Weight

    Motor Power

    (m³/h)

    (m)

    (%)

    (kw)

    (rpm)

    (kg)

    (kW)

    50WQ(QW)10-7-0.75

    10

    7

    45

    0.42

    2900

    21Kg

    0.75kW

    50WQ(QW)10-15-1.5

    10

    15

    51

    0.8

    2900

    45Kg

    1.5kW

    50WQ(QW)9-22-2.2

    9

    22

    46

    1.17

    2900

    50Kg

    2.2kW

    50WQ(QW)15-15-2.2

    15

    15

    51

    1.2

    2900

    50Kg

    2.2kW

    50WQ(QW)25-15-3

    25

    15

    52

    1.97

    2900

    52Kg

    3kW

    50WQ(QW)15-32-4

    15

    32

    49

    2.67

    2900

    55Kg

    4kW

    50WQ(QW)25-22-4

    25

    22

    52

    2.88

    2900

    56Kg

    4kW

    50WQ(QW)18-32-5.5

    18

    32

    49

    3.2

    2900

    95Kg

    5.5kW

    50WQ(QW)15-50-7.5

    15

    50

    49

    4.17

    2900

    98Kg

    7.5kW

    50WQ(QW)20-40-7.5

    20

    40

    50.5

    4.32

    2900

    98Kg

    7.5kW

    80WQ(QW)10-10-1.5

    10

    10

    51

    0.53

    2900

    45Kg

    1.5kW

    80WQ(QW)30-10-2.2

    30

    10

    53

    1.54

    2900

    50Kg

    2.2kW

    80WQ(QW)40-7-2.2

    40

    7

    54

    1.41

    2900

    50Kg

    2.2kW

    80WQ(QW)50-10-3

    50

    10

    56

    2.43

    2900

    53Kg

    3kW

    80WQ(QW)50-12-4

    50

    12

    56

    2.92

    2900

    60Kg

    4kW

    80WQ(QW)30-32-7.5

    30

    32

    52.5

    4.98

    2900

    95Kg

    7.5kW

    80WQ(QW)50-65-22

    50

    65

    56

    15.81

    2900

    390Kg

    22kW

    100WQ(QW)100-7-4

    100

    7

    60

    3.18

    2900

    65Kg

    4kW

    100WQ(QW)30-22-5.5

    30

    22

    53

    3.39

    2900

    95Kg

    5.5kW

    100WQ(QW)65-15-5.5

    65

    15

    56.5

    4.7

    2900

    110Kg

    5.5kW

    100WQ(QW)100-10-5.5

    100

    10

    60

    4.54

    2900

    110Kg

    5.5kW

    100WQ(QW)50-22-7.5

    50

    22

    56

    5.35

    2900

    98Kg

    7.5kW

    100WQ(QW)40-35-11

    40

    35

    55

    6.94

    1450

    279Kg

    11kW

    100WQ(QW)70-22-11

    70

    22

    57

    7.36

    1450

    278Kg

    11kW

    100WQ(QW)80-30-15

    80

    30

    61

    10.72

    1450

    360Kg

    15kW

    100WQ(QW)80-65-30

    80

    65

    61

    23.23

    2900

    430Kg

    30kW

    150WQ(QW)140-7-5.5

    140

    7

    62

    4.31

    2900

    99Kg

    5.5kW

    150WQ(QW)145-10-7.5

    145

    10

    62

    6.37

    2900

    110Kg

    7.5kW

    150WQ(QW)130-15-11

    130

    15

    61

    8.71

    1450

    288Kg

    11kW

    150WQ(QW)200-10-11

    200

    10

    66

    8.26

    1450

    282Kg

    11kW

    150WQ(QW)140-18-15

    140

    18

    73

    9.41

    1450

    360Kg

    15kW

    150WQ(QW)150-22-18.5

    150

    22

    63

    14.27

    980

    520Kg

    18.5kW

    150WQ(QW)130-30-22

    130

    30

    62

    17.14

    1450

    520Kg

    22kW

    150WQ(QW)200-22-22

    200

    22

    65

    18.45

    980

    540Kg

    22kW

    150WQ(QW)100-40-30

    100

    40

    59

    18.47

    980

    880Kg

    30kW

    150WQ(QW)200-30-30

    200

    30

    63

    25.95

    980

    900Kg

    30kW

    150WQ(QW)140-45-37

    140

    45

    61

    28.14

    980

    1150Kg

    37kW

    150WQ(QW)250-30-37

    250

    30

    68

    30.06

    980

    1150Kg

    37kW

    150WQ(QW)150-60-55

    150

    60

    61

    40.2

    980

    1260Kg

    55kW

    150WQ(QW)200-65-75

    200

    65

    63

    56.23

    980

    1720Kg

    75kW

    200WQ(QW)360-6-11

    360

    6

    66

    8.92

    1450

    354Kg

    11kW

    200WQ(QW)400-7-15

    400

    7

    68

    11.22

    1450

    380Kg

    15kW

    200WQ(QW)250-15-18.5

    250

    15

    66

    15.48

    1450

    570Kg

    18.5kW

    200WQ(QW)400-10-18.5

    400

    10

    74

    14.73

    980

    530Kg

    18.5kW

    200WQ(QW)450-12-22

    450

    12

    74

    19.89

    980

    560Kg

    22kW

    200WQ(QW)300-22-37

    300

    22

    65

    27.67

    980

    1100Kg

    37kW

    200WQ(QW)450-22-45

    450

    22

    67

    40.26

    980

    1400Kg

    45kW

    200WQ(QW)250-40-55

    250

    40

    64

    42.58

    1450

    1380Kg

    55kW

    200WQ(QW)400-34-55

    400

    34

    73

    50.77

    980

    1480Kg

    55kW

    200WQ(QW)350-45-75

    350

    45

    66

    65.03

    980

    1600Kg

    75kW

    200WQ(QW)350-50-90

    350

    50

    66

    72.25

    1450

    1550Kg

    90kW

    200WQ(QW)250-70-110

    250

    70

    64

    74.51

    980

    1900Kg

    110kW

    250WQ(QW)250-17-22

    250

    17

    71

    16.31

    980

    820Kg

    22kW

    250WQ(QW)400-15-30

    400

    15

    68

    24.04

    980

    900Kg

    30kW

    250WQ(QW)700-10-30

    700

    10

    74

    25.78

    980

    900Kg

    30kW

    250WQ(QW)500-15-37

    500

    15

    76

    26.89

    980

    1050Kg

    37kW

    250WQ(QW)600-15-45

    600

    15

    72

    34.06

    980

    1450Kg

    45kW

    250WQ(QW)800-22-75

    800

    22

    71

    67.55

    980

    1520Kg

    75kW

    250WQ(QW)600-35-90

    600

    35

    74

    77.33

    980

    1800Kg

    90kW

    250WQ(QW)500-45-110

    500

    45

    68

    90.17

    740

    2000Kg

    110kW

    300WQ(QW)750-5-18.5

    750

    5

    76

    13.45

    980

    680Kg

    18.5kW

    300WQ(QW)700-6-22

    700

    6

    72

    15.9

    980

    820Kg

    22kW

    300WQ(QW)900-15-55

    900

    15

    77

    47.78

    980

    1350Kg

    55kW

    300WQ(QW)1000-22-90

    1000

    22

    76

    78.88

    980

    1820Kg

    90kW

    300WQ(QW)500-55-132

    500

    55

    67

    111.85

    1450

    2000Kg

    132kW

    300WQ(QW)700-60-185

    700

    60

    70.5

    162.34

    1450

    3000Kg

    185kW

    350WQ(QW)940-8-30

    940

    8

    72

    28.46

    980

    1150Kg

    30kW

    350WQ(QW)1200-6-37

    1200

    6

    72

    27.25

    980

    1250Kg

    37kW

    350WQ(QW)1100-10-45

    1100

    10

    78

    38.43

    980

    1500Kg

    45kW

    350WQ(QW)1200-10-55

    1200

    10

    72

    45.42

    980

    1350Kg

    55kW

    350WQ(QW)1200-15-75

    1200

    15

    72

    68.12

    980

    1800Kg

    75kW

    350WQ(QW)1200-18-90

    1200

    18

    72

    81.75

    980

    2000Kg

    90kW

    350WQ(QW)1000-28-132

    1000

    28

    73

    104.52

    740

    2800Kg

    132kW

    350WQ(QW)1000-31-160

    1000

    31

    72

    117.33

    740

    3150Kg

    160kW

    350WQ(QW)850-60-250

    850

    60

    71

    195.74

    980

    4600Kg

    250kW

    400WQ(QW)1000-6-30

    1000

    6

    72

    22.71

    980

    1200Kg

    30kW

    400WQ(QW)1900-6-55

    1900

    6

    75

    41.42

    740

    1930Kg

    55kW

    400WQ(QW)2000-8-75

    2000

    8

    80

    54.5

    740

    2150Kg

    75kW

    400WQ(QW)2000-13-110

    2000

    13

    75.5

    93.84

    740

    2670Kg

    110kW

    400WQ(QW)2200-15-132

    2200

    15

    76

    118.32

    740

    2670Kg

    132kW

    400WQ(QW)1600-26-160

    1600

    26

    76

    149.16

    740

    3200Kg

    160kW

    400WQ(QW)1700-32-200

    1700

    32

    82.5

    179.68

    740

    3850Kg

    200kW

    400WQ(QW)1900-32-250

    1900

    32

    75

    220.91

    740

    4200Kg

    250kW

    400WQ(QW)1500-47-280

    1500

    47

    75

    256.15

    980

    4750Kg

    280kW

    500WQ(QW)2100-10-90

    2100

    10

    75.5

    75.79

    980

    2160Kg

    90kW

    500WQ(QW)2600-16-160

    2600

    16

    84

    134.95

    740

    3200Kg

    160kW

    500WQ(QW)3000-14-160

    3000

    14

    85

    134.65

    740

    3200Kg

    160kW

    500WQ(QW)2400-22-220

    2400

    22

    76

    189.32

    740

    4280Kg

    220kW

    500WQ(QW)2700-24-250

    2700

    24

    80

    220.72

    740

    4500Kg

    250kW

    500WQ(QW)3000-24-280

    3000

    24

    77.5

    253.16

    740

    4800Kg

    280kW

    500WQ(QW)2400-30-300

    2400

    30

    84

    233.57

    740

    5200Kg

    300kW

    500WQ(QW)3000-35-400

    3000

    35

    84

    340.62

    740

    6100Kg

    400kW

    550WQ(QW)3500-7-110

    3500

    7

    78.5

    85.05

    740

    3100Kg

    110kW

    550WQ(QW)3000-10-132

    3000

    10

    77.5

    105.48

    740

    2900Kg

    132kW

    550WQ(QW)4000-15-220

    4000

    15

    83.5

    195.81

    740

    4400Kg

    220kW

    550WQ(QW)4000-30-450

    4000

    30

    85

    384.71

    740

    6800Kg

    450kW

    600WQ(QW)3600-12-185

    3600

    12

    78.5

    149.96

    740

    3200Kg

    185kW

    600WQ(QW)5800-10-250

    5800

    10

    81

    195.12

    740

    4600Kg

    250kW

    600WQ(QW)6000-15-355

    6000

    15

    82

    299.09

    740

    5800Kg

    355kW

    600WQ(QW)5500-25-560

    5500

    25

    84

    446.06

    740

    7900Kg

    560kW

    Kind Reminder: Click on the specific model series above to view the corresponding detailed parameters and performance curves, etc.

    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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