Axial Flow Pump Manufacturers

The QZ series submersible axial flow pumps and QH series submersible mixed flow pumps are submersible electric pumps designed for applications requiring high flow rates and low heads. Submersible axial flow pumps typically operate at heads below 10 meters, while submersible mixed flow pumps typically operate at heads within 20 meters. These products are the best replacement for traditional axial flow and mixed flow pumps. The motor and pump are integrated into one unit, operating submerged in water, offering a series of advantages unmatched by traditional units.

Suitable for conveying clean water or lightly polluted water. In agriculture, it is used for irrigation and drainage; in municipal engineering, it is used for rainwater and lightly polluted water; in industry, it is used for process water, cooling water, and raw water supply; and in water conservancy projects, it is used for water diversion projects.

• 🌾Agricultural Irrigation and Drainage – Used in irrigation and drainage projects to solve flood control problems in areas with large water level differences in farmland and along rivers and lakes, eliminating the need for long shafts between pumps and improving operational safety and reliability.
• 🏙️Municipal Drainage and Water Supply – Used for urban rainwater drainage, light sewage, and raw water supply. Underground pumping stations can be constructed to maintain the surface environment and reduce surface area occupation, making it suitable for urban redevelopment projects.
• 🏭Industrial Circulating Cooling – Used for process water and cooling water circulation systems in industrial and mining enterprises, raw water supply treatment, and large-flow industrial circulating water applications in industries such as power, chemical, and steel.
• 💧Water Conservancy and Water Diversion Projects – Used for water diversion projects to solve flood control problems in areas with large water level differences along rivers and lakes, making it an ideal choice for large-scale water conservancy infrastructure construction.

• The motor and pump are integrated, eliminating the need for labor-intensive, time-consuming, and complex on-site shaft alignment and assembly procedures. Installation is extremely convenient and quick, thus eliminating the need to reserve a space for a spare pump, which can be stored in a warehouse, saving on investment in the pump station's intake pool. Because it operates submerged in water, the civil engineering and building structure of the pump station are greatly simplified, reducing the installation area and saving 30-40% in construction costs.
•  With the pump operating in water, the water flow around the motor, resulting in low noise and good motor cooling.
• It can be built as an underground pump station, preserving the surface environment.
• Using a submersible pump is the most thorough method for solving the problems of building pump stations and flood control in areas with large water level fluctuations along rivers and lakes. It eliminates the need for a long shaft between the pump and motor, improving operational safety and reliability.

• ⚡Integrated Submersible Structure – The motor and pump are integrated into one unit, eliminating the need for axial alignment during assembly. Installation is quick and easy, requiring no pre-reserved pump space and saving on investment in inlet and outlet water tanks for the pumping station.
• 🌊Underwater Cooling Operation – The pump operates underwater, with water flowing around the motor. This results in low noise and excellent motor cooling, allowing for underground pumping stations and helping to maintain the surface environment.
• 🏗️Significantly Reduced Civil Engineering Costs – The system greatly simplifies the civil engineering of the pumping station, reducing installation area and saving 30%–40% on construction costs, significantly lowering the total project investment.
• 🔒Double Mechanical Seals – Two independent mechanical seals isolate the motor and pump, installed in series, providing multiple layers of protection and significantly improving operational reliability.
• 🛡️Comprehensive Protection Devices – Equipped with multiple protection devices including overload, phase loss, leakage, over-temperature, humidity, and immersion protection, with wiring to the electrical control box to ensure safe operation of the equipment at all times.
• 📐Adjustable blade angle – The blade semi-adjustable design allows for adjustment of the installation angle (-6° to +4°) according to operating conditions, flexibly matching different head and flow requirements, and has a wide range of applications.

1. Impeller – Utilizes a state-of-the-art hydraulic model, ensuring excellent, stable, and mature performance. Excellent cavitation resistance ensures smooth operation and extends service life.
2. Shaft Seal – Two independent mechanical seals isolate the motor from the pump; their tandem installation provides multiple layers of protection and enhances reliability.
3. Oil Chamber – Oil lubricates and cools the mechanical seal, isolating the motor from the pumped medium. The internal volume helps slow down pressure rise within the oil chamber.
4. Anti-rotation Device – At startup, the reaction torque of the motor's starting torque can cause the entire unit to rotate in the opposite direction; the anti-rotation device prevents this.
5. Bearings – Employs rolling bearings capable of withstanding all axial and radial loads and completely isolated from the pumped medium, ensuring reliable transmission.
6. Pump/Motor Shaft – The pump and motor are coaxial, resulting in a compact structure. The shaft extension is minimized to reduce deflection, resulting in less vibration during operation and longer seal and bearing life.
7. High-performance motor – A high-performance squirrel-cage induction motor, specifically designed and manufactured for submersible pumps, conforming to GB755 standards, insulation class F, with a maximum operating temperature of 135°C. Supports voltage levels of 380V, 660V, 3kV, 6kV, and 10kV.
8. High-efficiency cooling system – The motor casing directly transfers heat to the surrounding medium, where it is carried away by the surrounding water flow. The high-power motor employs internal airflow cooling technology, resulting in low temperature rise and uniform temperature distribution in the three-phase windings.
9. Monitoring and protection devices – Equipped with multiple protection devices, with leads to the control box: overload, phase loss, leakage, over-temperature, humidity, and immersion protection, comprehensively ensuring safe operation of the equipment (varies depending on the pump structure).

350QZ-70G  (High speed 1450 RPM)

350QZ-70G (Low speed 980 RPM)

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