Reference image. Final construction follows the confirmed model and quotation.
Cutting Sewage Pumps
WQK/QG Sewage Pump
Model: WQK/QG
WQK/QG Sewage Pump is designed for municipal drainage, wastewater treatment, construction dewatering and industrial effluent. DFIN Pump provides model verification, material selection and technical support based on the actual duty point.
TECHNICAL DATA
Specifications, performance and construction
Confirm the final operating point, materials, motor and connection standard before ordering.
Product Overview
WQK/QG Sewage Pump is an industrial sewage & submersible pump selected for municipal drainage, wastewater treatment, construction dewatering and industrial effluent. The final configuration should be verified against the actual liquid, duty point, temperature, installation and power supply.
Typical Applications
Municipal drainage, wastewater treatment, construction dewatering and industrial effluent.
Design Features
- Solids-handling hydraulic passage
- Submersible or dry-installed configurations
- Automatic control options
- Model and material selection supported by DFIN Pump engineers
Technical Performance Data
| Model |
Flow m3/h |
Head （m） |
Water outlet piping Port Size mm |
Power kw |
Speed （r/min） |
| WQK8-12QG | 8 | 12 | 32 | 0.75 | 2900 |
| WQK20-7QG | 20 | 7 | 50 | 0.75 | 1450 |
| WQK10-12QG | 10 | 12 | 40 | 1.1 | 1450 |
| WQK8-22QG | 8 | 22 | 25 | 1.1 | 1450 |
| WQK20-15QG | 20 | 15 | 50 | 1.5 | 1450 |
| WQK15-30QG | 15 | 30 | 40 | 2.2 | 1450 |
| WQK20-20QG | 20 | 20 | 50 | 2.2 | 1450 |
| WQK25-15QG | 25 | 15 | 65 | 2.2 | 1450 |
| WQK40-7QG | 40 | 7 | 80 | 2.2 | 1450 |
| WQK30-15QG | 30 | 15 | 80 | 3 | 2900 |
| WQK25-30QG | 25 | 30 | 65 | 4 | 2900 |
| WQK40-15QG | 40 | 15 | 80 | 4 | 1450 |
| WQK85-10QG | 82 | 10 | 100 | 4 | 1450 |
| WQK65-25QG | 65 | 25 | 80 | 7.5 | 2900 |
| WQK80-20QG | 80 | 20 | 80 | 7.5 | 1450 |
| WQK100-15QG | 100 | 15 | 100 | 7.5 | 1450 |
| WQK100-25QG | 100 | 25 | 100 | 11 | 1450 |
| WQK115-15QG | 115 | 15 | 125 | 15 | 1450 |
| WQK180-15QG | 180 | 15 | 150 | 15 | 1450 |
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Fault phenomena |
Possible Cause |
Corrective Action |
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Electric pump is not running |
The power cord is not connected properly |
Connect the power supply according to the standard requirements |
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One phase of the power supply is not energized |
Check the fuse and power supply, and connect the three-phase power supply |
|
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Impeller and chassis stuck |
Adjust the chassis clearance between 0.2 and 0.5mm so that the impeller can be easily moved by hand. |
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Electric pump burned out |
Repair the Motor again |
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Protective device damaged |
Repair or replace |
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The water output is small or the Head is not enough |
The gap between the impeller and the chassis is too large |
Adjust the gap to the normal range (0.2~0.5mm) |
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The impeller is severely worn |
Replace impeller |
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MotorSpeed cannot reach normal Speed |
Replace Motor Rotor or Repair Voltage |
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Power Voltage is too low |
Adjust Voltage to rated Voltage |
|
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Connect large cross-section cables to reduce the voltage drop on the power lead (when the power lead is too long) |
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Electric pump reverse |
Swap the two power connectors to make the electric pump rotate forward. |
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Impurities cannot be cut or |
The gap between the impeller and the chassis is too large |
Adjust the gap to the normal range (0.2~0.5mm) |
|
Cutting blade wear becomes pure |
Replace impeller and chassis |
|
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The protector is disconnected or |
The protector is improperly selected or damaged |
Re-select a suitable protector (the rated current of the protector must match the rated current of the electric pump) |
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The power supply motor is damp or leaking, causing the insulation resistance to be too low (less than 0.5MΩ) |
Remove the Motor and dry it. If the mechanical seal or sealing ring or cable sealing head is damaged and water leakage occurs, the damaged sealing parts should be replaced. |
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Motor stator coil short circuit between turns |
Motor replacement or repair |
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Motor two-phase operation |
Check power supply or connector and repair |
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Power Voltage is too low |
Restore Voltage to normal value |
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The electric pump is stuck by impurities |
Clean up impurities |
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The water viscosity is too high or contains too much sand, causing the electric pump to run overloaded |
Reduce viscosity or sand content |
|
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Bearing damage |
Replace bearings |
Selection Information Required
Please provide medium, concentration, flow, total head or pressure, temperature, viscosity or solids, voltage, frequency and installation method. DFIN Pump will confirm the suitable model and materials.
Catalog reference: authorized YZJ product data · Model WQK/QG
SELECTION SUPPORT
Application-based pump selection
Send the liquid, flow, head or pressure, temperature, solids, installation, power supply and destination for a verified recommendation.
Discuss this application