The Submersible Sewage Pump features a cutting disk, dual-channel anti-clogging impeller, and tungsten carbide double-end seals, with intelligent protection and rail-coupled installation for stable operation with solids ≤50% outlet diameter, fibers ≤300mm, and submersion ≤20m.
It solves fiber entanglement/clogging, seal leakage, high-risk underwater maintenance, and excessive energy consumption in conventional submersible sewage pumps.
It is suitable for municipal wastewater treatment, industrial wastewater/slurry transfer, building basement drainage, and agricultural water management requiring zero-clogging, pit-free maintenance, and long-cycle reliable operation.
Extended Service Life: Tungsten carbide dual mechanical seals + cast iron/stainless steel/wear-resistant alloy wetted parts resist wear, corrosion & fiber entanglement. Design lifespan ≥12 years—over 40% longer than standard single-seal sewage pumps.
Significant Energy Savings: Cutting disc pre-treatment + optimized dual-channel hydraulic model achieve ≥73% efficiency at rated duty. Combined with intelligent liquid level control to prevent idle running, annual electricity costs drop by 20%–30%.
Lower Maintenance Costs: Auto-coupling rail system + external seal design enables pump lifting & seal replacement without entering sewage pit. One technician completes maintenance within 45 minutes, reducing labor costs by 55%.
Lightweight & Compact Design: Submersible streamlined structure eliminates pump house & heavy baseplate. Overall weight reduced by ~18% for equivalent flow ratings, lowering civil construction costs & lifting complexity.
Faster Installation: Pre-installed coupling base + quick-connect hose interfaces support both fixed/mobile installation modes. Standard units reach commissioning readiness within 2 hours from positioning, compressing installation cycle by 45%.
Municipal Drainage: Municipal wastewater treatment plants, rainwater pumping stations, street drainage networks, with strong anti-clogging performance ensuring flood drainage efficiency during rainy seasons.
Building Sewage: Underground basement/subway stations/civil air defense/hotels/hospitals sewage discharge, submersible low-noise operation, saving building space.
Industrial Wastewater: Chemical plants/dyeing factories/mining slurry transport, optional stainless steel/wear-resistant materials, corrosion/wear resistant, adapting to harsh conditions.
Agricultural Water Conservancy: Farmland flood drainage, biogas digester mixing transport, aquaculture sewage discharge, flexible mobile deployment, low maintenance costs.
Media Compatibility: Sewage/slurry/fiber-containing liquids. Solid content ≤5% (vol), particle size ≤50% of outlet diameter, pH 4–10, temperature 0–40℃ (32–104℉).
Media: Sewage/slurry/fiber liquids | Solids ≤5% vol, size ≤50% outlet | pH 4–10 (cast iron)
Temp: Media 0–40°C (32–104°F, high-temp optional) | Ambient ≤40°C (≤104°F)
System: Submersion depth ≤20m (≤66 ft) | Install: Fixed coupling/mobile hose/level control
Electrical: Power 3-phase 380V/50Hz (customizable) | Protection: IP68 (fully submersible) |
Insulation: Class F/H optional
Note: Special conditions (high temp/corrosion/high particles/high altitude)? Consult before selection. Custom solutions available.
National Standard Compliance: Strictly manufactured per GB/T 24674-2009 “Submersible sewage pumps” & JB/T 5118-2010. Hydraulic performance & mechanical safety 100% compliant. Third-party full performance curve test reports available.
Motor Protection Certification: Standard IP68 rated motors comply with IEC 60034 rotating electrical machines standards, suitable for long-term submersion/high-humidity/dusty industrial environments. Insulation class F/H optional.
International Quality System: ISO 9001:2015 certified. Core pressure-bearing components evaluated per CE/PED 2014/68/EU, meeting EU/US market entry requirements.
Factory Inspection Standard: Every unit undergoes 1.5× rated pressure hydrostatic test (5-min hold) + G6.3 dynamic balance calibration + cutting passage capacity test (fibers ≤300 mm pass smoothly), guaranteeing zero-leakage, zero-clogging delivery.
Fast Standard Delivery: Covers flow, head. Standard cast iron + tungsten carbide dual seals + IP68 motors. Technical confirmation & sample prototyping within 72 hours.
Deep Customization Capabilities:
Material Upgrade: Wetted parts optional in 304/316 stainless steel or wear-resistant alloy for high-chloride/mild acid-alkali/high-abrasion industrial wastewater.
Cutting System: Optional tungsten carbide cutting disc (for fibers ≤500 mm), dual-disc design, adjustable disc gap structure.
Structural Adaptation: Supports rail coupling/mobile hose/liquid level control three installation modes, flange standard switching (GB/ANSI/DIN).
Intelligent Expansion: Pre-wired interfaces for level/temperature/leakage sensors; supports integration with auto control cabinets, IoT remote monitoring, multi-pump rotation modules.
Please contact us for customization inquiries. Our engineering team delivers process proposals within 48 hours.
Installation Key Points:
1.Mount pump vertically on coupling base. Ensure rail parallelism ≤2 mm/m for natural seal mating during pump descent, preventing misalignment leakage.
2.Connect inlet/outlet with flexible rubber joints or quick-connect hoses. Rigid pipe direct connection is prohibited. Provide independent supports for inlet/outlet piping.
3.Route float switch cable along rails, avoid interference with moving parts. Separate signal cables from control cables to prevent EMI.
4.Before initial startup, manually rotate cutting disc to confirm no binding. Jog test to verify rotation (clockwise from motor end). Confirm insulation resistance ≥50 MΩ before operation.
Commissioning Process: Prime & vent → Jog test for direction → No-load run 5 min → Slowly open discharge valve to rated duty → Record current/pressure/vibration/temp rise → Acceptance.
Request the “WQK Cutting-Type Submersible Sewage Pump Installation & Maintenance Manual” (PDF/English version) for complete dimensional drawings, coupling installation diagrams, and commissioning logs.
Q1: How does cutting disc ensure fibers ≤300 mm pass smoothly without entanglement?
Tungsten carbide cutting disc + dual-channel impeller work synergistically. Fibers entering pump chamber are cut to ≤50 mm by high-speed rotating disc, then discharged smoothly via large-passage design, eliminating entanglement/clogging.
Q2: How do dual mechanical seals prevent sewage from entering motor?
Two seals in series (inner main + outer auxiliary) + oil-chamber isolation lubrication. WC/SiC mating faces precision ≤0.001 mm. Tested leakage rate <0.01 mL/h, completely blocking media intrusion.
Q3: How does rail coupling system enable “maintenance without entering sewage pit”?
Pump body auto-aligns and seals with base via rails. For maintenance, simply lift pump to ground level—no personnel entry into sewage pit required. One technician completes disc/seal replacement within 45
Q4: How does intelligent protection system enable unattended safe operation?
Built-in thermal protector + leakage probe + overload/phase-loss detection integrated in control circuit. Fault signal triggers auto-shutdown within 0.5 seconds, supporting remote alarm & reset.
Q5: What customizations are needed for high-temperature variant (>40℃)?
Standard type suits 0–40℃. For >40℃: ① High-temp mechanical seals (FKM O-rings + SiC mating faces); ② Enhanced motor cooling structure; ③ Insulation class upgraded to H grade.
