Floating Axial Flow Pump

Floating Axial Flow Pump

A Floating Axial Flow Pump is an integrated pumping system that combines an axial flow pump with a buoyant pontoon or barge-style platform. This design allows the entire pump assembly to float on the surface of a water body, making it an exceptionally versatile solution for moving large volumes of water where water levels fluctuate.

Pontoon type axial flow pump (low suction type) Applicable to reservoirs Lakes The river carries water Large flow Low lift The transmission water quality is raw water Or light sewage The temperature of conveying medium is below 50 ℃ The lift is below 10 meters Simple operation Easy to use Cooperate with water pipeline Temporary large flow drainage is available It is suitable for reservoir water transfer Drainage.

Key Components
Pontoon (Floatation Body): The core of the system. It's a sealed, hollow structure, typically made from steel, polyethylene (PE), or fiberglass-reinforced plastic (FRP), providing the buoyancy to support the pump, motor, and piping.

Axial Flow Pump: The pumping heart. It features an impeller (propeller) that moves fluid parallel to its axis, "pushing" the water rather than throwing it radially. This is ideal for high-flow, low-head applications.

Drive Motor: Usually an electric or diesel engine mounted on top of the pontoon, well above the waterline for easy access, cooling, and protection.

Long Vertical Shaft: Connects the motor on the pontoon to the submerged pump impeller below, transmitting the driving force.

Discharge Pipe & Flexible Connector: A critical part. The outlet pipe is connected to the pump volute via a flexible hose or coupling. This allows the pump to move (rise, fall, tilt) with the water level and wave action without stressing or damaging the rigid pipeline.

Mooring System: Cables, chains, and anchors (to the shore or deadweights on the seabed) that secure the floating pump in its desired position.

How It Works
The motor drives the vertical shaft, which spins the axial flow impeller. The impeller draws water in axially from underneath the pontoon and discharges it axially upward into the outlet pipe. The entire assembly floats, automatically rising and falling with the water level, ensuring the pump's inlet always remains at the optimal submerged depth for operation.

Advantages
Adapts to Water Level Changes: Its biggest advantage. It operates efficiently in reservoirs, rivers, and lakes where water levels can vary significantly, eliminating the risk of pump cavitation during low levels or flooding during high levels.

Rapid Deployment and Mobility: Requires no permanent civil structures or complex foundations. It can be quickly transported, launched, and moved to different locations as needed, making it perfect for emergency dewatering and seasonal applications.

Cost-Effective: Dramatically reduces initial investment by eliminating the need for a fixed pump house, underwater construction, and extensive site preparation.

Easy Maintenance and Accessibility: All major components (motor, controls) are above water and easily accessible for inspection, service, or repair without the need for diving or dewatering the site.

Applications
Emergency Flood Control & Dewatering: Rapid deployment for draining flooded areas (cities, construction sites) after storms.

Agricultural Irrigation & Drainage: Pumping water from rivers or canals to fields, or draining excess water from farmland.

Aquaculture: Water circulation, aeration, and exchange in large fish and shrimp farms.

Raw Water Intake: Transferring water from a source to a treatment plant.

Environmental Management: Circulating water in lakes and ponds to prevent stagnation and improve water quality.

Construction Dewatering: Pumping water from construction pits, coffer dams, and mining sites.