Analysis of the working principle of submersible mixer
The submersible agitator generates hydraulic kinetic energy by driving the impeller to rotate through a motor, achieving water mixing, pushing flow, and uniform distribution of suspended solids. The core workflow of the submersible agitator mixer is as follows:
1.Power transmission system
Motor driven
Adopting a three-phase asynchronous submersible motor (protection level IP68) to directly drive the impeller, converting electrical energy into mechanical energy.
Some models match the speed through a reduction mechanism, such as low-speed thrust flow equipment that reduces the speed through non direct transmission (usually 100-400r/min) to enhance the thrust range.
Impeller function
When the impeller (swept back, two blade or three blade design) rotates, it cuts the water body, producing axial thrust flow and swirling jet flow.
By optimizing the impeller diameter (0.3-2.5m) and inclination angle, balancing the thrust intensity and energy consumption, the coverage radius can reach 50 meters.
2.Hydrodynamic effect
Mixing and Pushing Flow
The centrifugal force generated by the rotation of the impeller disperses the water flow outward, while the axial thrust transports the water forward, forming a composite flow state of "rotary jet+axial thrust flow".
The shear force of water flow destroys the aggregation of sludge flocs, promotes solid-liquid mixing, and prevents sedimentation.
Flow field control
The design of the diffuser can optimize the direction of water flow, reduce energy loss, and improve mixing efficiency by 15% -30%.
Low speed push flow equipment forms stable laminar flow through large-diameter impellers (such as 2.5m), suitable for suspended sludge in aeration tanks.
3.Sealing and protection mechanism
Double mechanical seal: using tungsten carbide or silicon carbide material sealing group to isolate sewage from entering the motor chamber, ensuring a continuous underwater operation life of more than 5 years.
Oil chamber buffer: Seal the mechanical sealing surface of the lubrication oil chamber, and install a leak sensor to monitor abnormalities in real time.
4. Intelligent control optimization
Variable frequency speed regulation: Automatically adjust the speed according to the water quality load, balancing treatment efficiency and energy consumption.
Fault warning: The thermal protection switch is linked with the vibration sensor to provide early warning of mechanical seal failure or impeller blockage.
Application scenarios: Aeration tanks/anaerobic tanks in municipal sewage treatment plants, industrial wastewater treatment, aquaculture circulating water systems, etc., with a daily processing capacity of up to 10000 tons.