Du'an Equipment Jiangsu Co., Ltd. provides you with the Du'an QSB type deep-water self-priming jet aerator.

Du'an QSB Type Deep-Water Self-Priming Jet Aerator

Name: QSB Submersible Jet Aerator

Brand: Jiangsu Du'an

Model: QSB Series

Material: Cast iron casing, carbon steel aeration disc 

Voltage: 380V

Motor Power: 0.75kW-22kW

Equipped with air inlet pipe, silencer, bell mouth, fixing bolts, and sealing gasket

Jet Aerator Application Range

The QSB type deep-water self-priming submersible jet aerator can operate normally and continuously under the following conditions:

1. Medium temperature not exceeding 40°C;

2. Medium pH value between 5~9;

3. Medium density not exceeding 1150 kg/m3

Du'an QSB Jet Aerator Technical Description:

The QSB submersible jet aerator consists of five parts: submersible pump, jet device, diffuser, air suction pipe, and hose. Based on the traditional jet mechanism, it incorporates advanced diffuser technology and adopts the jet aeration method.

Working Principle of the Submersible Jet Aerator: During operation, the pump impeller, driven by the submersible motor, rotates at high speed, pushing the mud-water mixture into the jet device to form a jet stream, creating a negative pressure zone around the jet. Air is drawn through the suction pipe into the negative pressure zone of the jet nozzle. In the throat of the jet device, air, water, and mud are fully mixed, and then the kinetic energy of the jet is gradually converted into pressure energy through the diffuser tube of the jet device before entering the diffuser. In the diffuser, the mixture of gas, water, and mud is further mixed, forcing the gas to continue shearing, crushing, and emulsifying, allowing the majority of oxygen to fully dissolve in the water. Simultaneously, under the pressure of the jet fluid, the jet carries oxygen molecules and micro-bubbles, spraying obliquely downward from the diffuser nozzle and diffusing, impacting and stirring the water body and the sludge at the bottom of the biochemical tank. The mixture then slowly rises from the bottom to the water surface. The micro-bubbles remain in the water for generally more than 30 seconds, allowing the oxygen in the air to be fully dissolved and absorbed, improving oxygen transfer efficiency and oxygenation capacity. This equipment enables the mud-water mixture and air to generate high negative pressure and turbulence, stirring, and shearing within the jet device, promoting high-frequency oscillation of the liquid and gas films, significantly reducing bubble diameter, increasing the number of bubbles, and the specific surface area of the bubbles. It also thins the gas-liquid film, greatly reducing mass transfer resistance, allowing oxygen molecules to transfer from the gas phase to the liquid phase. During the high-speed forward movement of the jet, under the action of high-speed rotation in the disperser, it possesses high angular velocity, giving the jet strong penetration power, enabling micro-bubbles to travel far in the water, enhancing stirring, flow pushing, and oxygenation capabilities. Application Range: Suitable for deep-water aeration, aeration and mixing in biochemical tanks, sludge aeration and mixing, and high-concentration organic wastewater treatment processes.

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