Submersible Flow Maker

The VML Submersible Flow Maker features a low-speed, large-diameter propeller design for wastewater circulation and sludge mixing in oxidation ditches, biological treatment tanks, and other wastewater basins. The series covers 1.5–7.5 kW power, 1100–2500 mm propeller diameters, 32–135 rpm speeds, and 1100–3980 N thrust, providing stable large-area flow while helping reduce sludge sedimentation and dead zones.

The VML Submersible Flow Maker uses a large-diameter, low-speed propeller driven by a submersible motor and reduction gearbox. The rotating propeller converts motor power into stable axial thrust, creating a wide and continuous circulation flow throughout the tank. This gentle but powerful flow keeps wastewater, activated sludge and suspended solids in motion, helping reduce sedimentation and stagnant zones. With propeller diameters from 1100 to 2500 mm and multiple speed and thrust options, the VML series can be selected according to tank geometry and process requirements to achieve an efficient flow pattern with relatively low power consumption.

The VML Submersible Flow Maker consists of a submersible motor, gearbox, propeller, mounting bracket, and lifting/winding system.

The unit features a compact structure, small footprint, and relatively low weight. Its streamlined design is well suited for fluid propulsion and circulation. It is easy to operate and maintain, quick to install, and designed for long service life.

The submersible motor is a three-phase asynchronous motor equipped with overload protection, phase-failure protection, and leakage protection. The motor has Class F insulation and an IP68 protection rating, making it suitable for continuous underwater operation.

The gearbox input shaft and output shaft are arranged on the same centerline. A mechanical seal chamber is located at the motor shaft extension and is filled with mechanical oil, helping prevent pressurized wastewater from entering the motor chamber.

The sealing system includes both static and dynamic seals. The static seal uses O-rings, while the dynamic seal adopts a double mechanical seal design. A skeleton oil seal is installed at the shaft extension on the oil chamber side to help prevent sand and solid particles from entering. The mechanical seal faces are made of corrosion-resistant hard alloy materials for reliable operation in wastewater environments.

The propeller blades also feature a self-cleaning design, helping reduce the risk of debris entanglement and clogging during operation.

Q1: What is the difference between a Submersible Flow Maker and a normal mixer?

A1: The Submersible Flow Maker uses a large-diameter propeller with low-speed rotation to create stronger hydraulic circulation with lower energy consumption.

Q2: Where can the Submersible Flow Maker be installed?

A2: It is widely used in: The Submersible Flow Maker is widely used in anaerobic tanks, anoxic tanks, MBBR tanks, sludge tanks, and industrial wastewater treatment systems. It provides efficient flow circulation, prevents sludge settling, improves mixing performance, and ensures stable operation in various wastewater treatment processes.

Q3: What information is required for model selection?

A3: Please provide the tank dimensions, water depth, wastewater type, required mixing performance, and installation method. Our engineering team will select the most suitable mixer model, power, and installation solution according to your project requirements.

Q4: Can you provide customized solutions?

A4: Yes. We can customize propeller size, motor power, installation system, and quantity according to project requirements.

Q5: Is the equipment suitable for 24-hour operation?

A5: Yes. With IP68 waterproof motor, durable mechanical seal, and corrosion-resistant materials, the equipment is designed for continuous wastewater treatment operation.