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

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    QW-Type Submersible Sewage Pump

    Publication Date:

    2025-09-05

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    The QW-type submersible sewage pump, commonly known as the QW submersible sewage pump, is a highly efficient, non-clogging submersible pump designed with key components including an impeller, pump body, and submersible motor base. Its rational design, coupled with a properly matched motor, ensures high efficiency and remarkable energy-saving performance. This pump model represents our company's latest product development. Featuring a unique single-channel impeller and employing two sets of advanced hard-alloy mechanical seals made from special materials, the pump’s oil-sealed motor compartment effectively prevents clogging while delivering exceptional efficiency and significant energy savings. As a cutting-edge upgrade in China’s pump technology, this product has earned widespread acclaim and positive feedback from users.

    ↑Click the image to learn about the QW-type submersible sewage pump Product details and Price Information ↑

    The QW-type submersible sewage pump shares the same shaft with its motor. Since the pump is positioned at the very bottom of the entire drainage unit, it can efficiently suction up residual wastewater from large areas. It is ideally suited for handling media with temperatures not exceeding 50°C and a pH range of 4 to 10, while also capable of conveying solid particles with diameters ranging from 15 to 110 mm and fibers whose length reaches up to 5 times the diameter of the pump inlet. This product is widely used in municipal projects, construction engineering, industrial and mining enterprises for wastewater discharge, as well as in hospitals, hotels, and residential areas for sewage disposal. The product complies with the Q/TBJW2-2003 standard titled "Submersible Electric Pump for Sewage and Sludge."

    QW Model Submersible Sewage Pump Specifications

    Flow range: 2–1500 m³/h
    Head range: 3–45 m
    Rotational speed n: 970–2900 r/min
    Ambient temperature T: ≤ +40℃
    Medium temperature: -15℃ to +60℃
    Medium density: ≤1.3 × 10³ kg/m³
    Medium pH range: 5–9
    System maximum working pressure: ≤0.6 MPa

    Model Description: 100QW110-10-7.5
    100—Pump discharge diameter is 100 mm
    QW——Submersible Sewage Pump
    110——Design flow rate is 15 m³/h
    10——Design head is 10m
    7.5 – Motor power: 3 kW


    Features of the QW Series Submersible Sewage Pump
    1. Durable and waterproof cable: Heavy-duty, dirt-resistant rubber-sheathed flexible cable with resin filling and tight compression fixing—guaranteed to remain securely in place without loosening, ensuring long-lasting reliability.
    2. Double Sealing, Double Protection: A dual mechanical seal configuration in series provides true double protection, ensuring motor safety.
    3. Multi-channel detection and protection: Oil-water probes and float switches can both perform real-time monitoring, enabling functions such as alarm activation, machine shutdown, and retention of fault signals—ensuring the safe and reliable operation of the submersible motor.
    4. Strong overcurrent capability: The dual-flow channel design ensures high pump efficiency and prevents clogging.
    5. Convenient Maintenance: The coupling device, featuring dual rails, eliminates the need for underwater operations during pump installation and removal, making maintenance quick, easy, and highly efficient—saving both time and labor.
     

    QW-Type Submersible Sewage Pump: Structural and Performance Characteristics

    QW-Type Stainless Steel Submersible Sewage Pump: Structural and Performance Characteristics Diagram
    ① Employing a large-flow, anti-clogging hydraulic component design with a unique single- or dual-blade impeller structure, this pump significantly enhances its ability to pass through debris—effectively handling fibrous materials up to 5 times the pump’s diameter, as well as solid particles approximately 50% of the pump’s diameter.
    ② The mechanical seal employs a new type of hard, corrosion-resistant tungsten carbide material, and the sealing design has been upgraded to a double-face seal made from the same durable, corrosion-resistant tungsten carbide. This design ensures long-lasting performance, enabling the pump to operate safely and continuously for over 8,000 hours while remaining fully immersed in the oil chamber.
    ③ The overall structure is compact, features a small footprint, produces low noise, and delivers remarkable energy-saving performance. It’s easy to maintain and eliminates the need for a pump room—simply submerge it in water to get it up and running, significantly reducing project costs.
    ④ The pump's seal oil chamber is equipped with a high-precision, anti-interference leakage detection sensor, and thermal-sensitive elements are pre-embedded within the stator windings. Additionally, a high-precision, anti-interference oil-water probe is installed in the seal oil chamber. When the mechanical seal on the pump side fails, water enters the oil chamber, triggering the probe to send a signal that provides absolute protection for the pump motor.
    ⑤ An fully automatic safety protection control cabinet can be equipped according to user needs, providing absolute protection against pump issues such as water leakage, electrical leakage, overload, and overheating, thereby enhancing the product's safety and reliability.
    ⑥ The float switch can automatically control the pump’s start and stop based on the desired liquid level changes, eliminating the need for dedicated personnel supervision and making it exceptionally convenient to use.
    ⑦ A dual-rail automatic coupling installation system can be equipped according to user needs, offering great convenience for installation and maintenance while eliminating the need for personnel to enter the sewage pit.
    ⑧ Can be used across the entire head range while ensuring the motor does not overload.
    ⑨ There are two different installation methods: a fixed automatic coupling system and a mobile, free-standing system.

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