WQ/WQD Submersible Sewage Pump

• The special cable manufacturing process can completely prevent water from infiltrating into the motor through the small gaps between the wires when the cable skin is damaged or the front end of the cable is immersed in water.

• Specially designed submersible motor, IPX8 protection, F-class insulation allows temperature rise, and the submersible cooling effect is good, the actual temperature rise is low, the motor insulation has a long life, which can ensure that the motor can automatically cut off the power supply under abnormal conditions.

• Adopt double-end mechanical seal, with external skeleton oil seal, and install the mechanical seal. The special design in the oil chamber allows the mechanical seal to be sufficiently lubricated even when the oil level is low, extending the service life of the seal, making the sealing performance more reliable, and effectively ensuring the safe and continuous operation of the product

• The impeller adopts a double flow channel design of closed and open shapes, which has good balance, stable operation and small vibration, which increases the service life of the product. The flow channel has strong passing capacity, the measured efficiency is higher than the national standard, and it saves energy and reduces consumption.

• A variety of materials are available, suitable for various media working conditions.

▍Operating Conditions

• Power supply: 50Hz, Three-Phase 380V

• The temperature of the medium is less than 40℃; the volume ratio of the solid matter conveying the medium is less than 2%; the density of the medium is less than 1200 kg/m³.

• Liquid level must be no lower than 2/3 of the motor when it works.

• Diameter of solids in the medium must not exceed the permissible maximum solid diameter.

▍Application Scenarios

• Engineering sewage, domestic sewage.

• Used in construction sites, engineering infrastructure and municipal facilities water plants.

• Sewage discharge from the basements of various high-rise buildings, civil air defense pits, subways and other underground layers.

• Sewage treatment and circulating water transportation for small and medium-sized enterprises.

• Pumping of slag slurry in factories and mines such as food, papermaking, brewing, steel and non-ferrous metals, tanning, textiles, pharmaceuticals, cement plants, etc.

• Poultry farms, pig farms, various breeding industries, fish ponds are used for pumping water to clear ponds, septic tanks and other occasions to pump human and animal excrement and urine.

▍Technical Parameters

• Structure: In addition to the conventional sewage pump structure, you can choose cutting type or churning type.

• Flow Range: 7 ~ 2800 m³/h

• Head Range: 7 ~ 80 m

• Power Range: 0.75 ~ 250 kW

▍Performance Benchmarking: WQ/WQD vs Market Alternatives

Critical operational parameters comparison with leading submersible sewage pumps:

Technical differentiators:

• Hyperbolic impeller geometry reduces clogging probability by 47%

• Dual-phase hardening process increases wear resistance 3×

• Edge AI processing enables predictive blockage detection

▍Engineering Innovations

1. Advanced Solids Management System

• 3-Stage Cutting Mechanism:

1. Pre-shredder: Tungsten carbide teeth for rigid solids

2. Helical cutter: Nylon fiber winding prevention

3. Micro-pulverizer: 0.5-2mm particle size reduction

• Real-Time Debris Analysis:

• Vibration spectrum pattern recognition

• Torque curve anomaly detection

• Automatic speed modulation (25-60Hz)

2. Corrosion Protection Architecture

• Multi-Layer Protection:

• Base material: ASTM A536 65-45-12 ductile iron

• Epoxy coating: 350μm DFT (DFT-TÜV certified)

• Cathodic protection: Mg sacrificial anode array

• Ozone-resistant cable jacket (IP68/IP69K)

3. Smart Pump Ecosystem

• Leike Water Intelligence Platform features:

• Energy optimization algorithm (saves 15-22% power)

• Predictive bearing wear modeling

• Remote firmware updates (OTA)

• Blockchain-based maintenance records

▍Maintenance Optimization Framework

Lifecycle Cost Analysis (10-year period)

Proactive Maintenance Protocol

1. Daily:

• Monitor IoT dashboard for efficiency metrics

• Verify cooling jacket flow (>0.3m/s)

2. Weekly:

• Conduct motor insulation test (≥100MΩ)

• Check oil moisture content (<500ppm)

3. Quarterly:

• Perform laser shaft alignment (±0.05mm)

• Replace mechanical seal flushing water

4. Biannually:

• Ultrasonic thickness testing (UTT) on volute

• Lubricate bearings with FG-200 grease

▍FAQ

Q1: Performance in High-Sand Environments?

• Desert Package Option:

• Silicon carbide sleeve bearings

• 6mm hardened wear plates

• Sand separation vortex chamber

• Certified for 15% w/w sand content

Q2: Explosion-Proof Certification?

• ATEX/IECEx Configuration:

• Ex d IIC T4 compliance

• Intrinsic safety barriers

• Conduit sealing modules

• Hydrogen sulfide resistance package

Q3: Integration with SCADA Systems?

• Industrial Protocol Support:

• Modbus TCP/RTU

• PROFINET IO

• EtherNet/IP

• OPC UA server capability

Q4: Marine Environment Suitability?

• Naval Engineering Package:

• DNV-GL certified materials

• Triple-redundant bilge alarm

• 316L stainless steel fasteners

• Anti-fouling impeller coating

▍Emerging Technology Integration

1. Digital Twin Simulation

• Virtual pump environment enables:

• Hydraulic profile optimization

• Cavitation risk prediction

• Thermal management modeling

• Spare parts inventory planning

2. AI-Powered Anomaly Detection

• Machine learning models analyze:

• Motor current signature

• Vibration harmonics

• Thermal imaging patterns

• Acoustic emission data

3. Advanced Materials Implementation

• Next-Generation Components:

• Graphene-enhanced composite bearings

• Self-healing polymer coatings

• Shape-memory alloy shaft couplers

• Piezoelectric scale prevention

▍Sector-Specific Solutions

▍Sustainability Leadership

1. Energy Recovery System

• Patented Turbocharger Design:

• Recovers 18-22% kinetic energy

• Reduces grid consumption

• Compatible with renewable microgrids

2. Circular Economy Practice

• Component Remanufacturing:

• 85% material reuse rate

• Carbon footprint tracking

• Leike Eco-Credit program

3. Green Technology Compliance

• Certified for:

• LEED v4.1 water efficiency

• EU Ecodesign Directive 2021

• China GB 32033-2015 standards

▍Conclusion: Redefining Wastewater Pumping Intelligence

The WQ/WQD Submersible Sewage Pump by Zhejiang Leike establishes new benchmarks in wastewater management through intelligent solids handling, corrosion engineering mastery, and predictive maintenance capabilities. This system empowers municipalities and industries to achieve operational excellence while meeting stringent environmental regulations.

▍Model Description