No-Dead-Zone Vertical Flow Booster for Deep Square & Round Tanks with Submersible Efficiency

The LHJ Vertical Circulating Mixer is a new-generation equipment designed for large-area and deep square or round tanks. By upgrading the traditional horizontal design to a vertical circulation structure, it offers superior efficiency, wider coverage, and high versatility. Key benefits include extended lifespan, low noise, minimal investment, and easy maintenance.

• Mid/High-Speed Series: Features higher RPM and mild mixing; ideal for anaerobic or anoxic treatment processes.
• Low-Speed Flow Booster Series: Features low RPM with high hydraulic efficiency and expansive coverage; ideal for equalization (EQ) tanks as well as anaerobic/anoxic applications.

• Gentle & Uniform Mixing: Wide coverage with gentle flow protects activated sludge flocs and biomass while eliminating dead zones.
• High Capacity: Large-scale circulation design covers 100-800m² per unit at water depths of 2-9m.
• Submersible Efficiency: Coaxial submersible motor ensures excellent cooling and low noise; mechatronic integration reduces energy loss and boosts efficiency.
• Robust Sealing: Dual-series mechanical seals plus multiple auxiliary seals guarantee maximum underwater reliability.
• Comprehensive Protection: Equipped with alarms for oil leakage, overheating, phase loss, and short circuits for secure operation.
• Low Infrastructure Cost: Flexible mounting options, including floating installation, eliminate the need for fixed platforms or housing, reducing total investment.
• Scalable & Versatile: Adaptable to any tank shape; units can be easily added, relocated, and managed via centralized or local control.

The LHJ mixer features a high-displacement propeller impeller. Driven by a submersible motor, it sprays fluid radially from the tank bottom to form a circular main flow, inducing large-scale 3D circulation. This mechanism keeps sludge in suspension, maximizes phase contact, and eliminates dead zones. The resulting gentle, uniform mixing significantly enhances anaerobic treatment efficiency.

• Water Temperature: 0°C-45°C
• pH Value: 4.5-9.0
• Medium Density: <1150 kg/m³

Mixer technical specifications (Rated: 380V / 50Hz):

1. Inspection & Fastening: Check for damage during transport/storage. Ensure all fasteners are tight and none have fallen off.
2. Oil Chamber: Verify that the submersible motor oil chamber is filled with high-quality oil.
3. Power Supply: Rated 380V±5%, 50Hz±1%. Verify power safety, reliability, and grounding markings before startup.
4. Cable Specifications: Use YZW 4-core rubber-sheathed cable (15m YCW standard). Protect cable heads from water/rain. Never use cables for lifting.
5. Environment Limits: Do not use in flammable, explosive, highly corrosive, or combustible liquid environments.
6. Insulation Resistance: Must be >50MΩ. If <2MΩ, a full overhaul is required. Ensure grounding is secure and reliable.
7. Sealing Check: Inspect cable jacket and inlet seals for cracks or breaks before submersion to prevent leakage.
8. Rotation Direction: Must be counter-clockwise (CCW) from the inlet view. To reverse, swap any two of the three power leads.
9. Protection System: Use of our dedicated control cabinet is recommended. It provides alarms/protection for overheating, oil leakage, overload, phase loss, and short circuits.
10. Debris Prevention: Prevent plastic bags, wires, and sticks from entering the tank to avoid impeller entanglement.
11. Monitoring: Regularly check for operational stability, abnormal noise, and current fluctuations. Address any issues immediately.