WQK/QG Submersible Sewage Pump with Cutter

WQK/QG Submersible Sewage Pump with Cutter

WQK/QG Submersible Sewage Pump with Cutter | Fiber-cutting, clog-resistant submersible drainage

  • Integrated cutter: Shreds fibrous/stringy debris before pumping to reduce clog risk.
  • Submersible duty build: Integrated motor-pump for underwater operation and stable cooling.
  • Seal protection: Mechanical-seal package for contaminated wastewater and continuous duty.
  • Flexible installation: Guide-rail fixed coupling or portable setup for pits and sumps.
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Product Overview

WQK / QG Submersible Sewage Pump with Cutter is a submersible centrifugal sewage pump equipped with an integrated cutting mechanism for macerating solids before discharge.

It addresses blockage caused by fibrous waste, textile debris, sanitary products, and soft solids in small-diameter pipeline sewage systems.

It is suitable for residential wastewater lifting stations, basement drainage, septic systems, municipal branch pipelines, and remote sewage transfer points.

✔ Confirm required flow rate, head, solid characteristics, and discharge pipe diameter before model selection to ensure cutting efficiency and stable discharge.

Model Designation

WQKQG Submersible Sewage Pumptype

Applications

Typical Operating Conditions

• Residential sewage lifting pits with narrow discharge pipelines

• Basement and underground facility drainage

• Septic tank discharge systems

• Municipal branch sewage networks

• Remote sanitary sewage transfer stations

Engineering Advantages

• Integrated rotary cutter reduces solid particle size before impeller entry

• Hardened alloy cutting blade improves wear resistance

• Semi-open impeller structure maintains hydraulic stability

• Fully submersible motor ensures compact installation

• Double mechanical seal protects motor chamber from leakage

✔ Designed for sewage systems where fiber cutting and anti-clog reliability are critical operational requirements.

System Components

WQK / QG Submersible Sewage Pump with Cutter：
The WQK / QG Submersible Sewage Pump with Cutter mainly consists of:

• Pump casing
• Cutting mechanism assembly
• Semi-open impeller
• Motor housing
• Mechanical seal system
• Pump shaft
• Bearing assembly
• Cable sealing system

Technical Specifications

Service Conditions

• Medium: Domestic sewage with fibrous solids

• Solid content compatible with cutter capacity

• Installation mode: Fully submersible

Operating Conditions

Flow rate: 23 – 152 m³/h
Head: 12 – 40 m
Power range: 1.1 – 7.5 kW

Detailed parameter tables are provided below.

Performance Parameters

Model
Diameter
Maximum Flow Rate
 Maximum Head
Motor Power (kW)
Voltage
mm
m3/h
m
KW
v
WQK10-15-1.1
50
23
17
1.1
380
WQK15-9-1.1
65
30
15
1.1
380
WQK15-15-1.5
50
25
20
1.5
380
WQK20-12-1.5
65
35
18
1.5
380
WQK9-22-2.2
50
32
25
2.2
380
WQK25-12-2.2
65
45
21
2.2
380
WQK35-10-2.2
80
56
15
2.2
380
WQK15-25-3
50
35
30
3
380
WQK25-18-3
65
48
24
3
380
WQK35-13-3
80
60
18
3
380
WQK50-9-3
100
68
12
3
380
WQK15-32-4
50
40
36
4
380
WQK25-28-4
65
50
32
4
380
WQK40-18-4
80
65
27
4
380
WQK50-12-4
100
85
18
4
380
WQK18-34-5.5
50
43
40
5.5
380
WQK30-26-5.5
65
55
35
5.5
380
WQK40-24-5.5
80
70
30
5.5
380
WQK70-10-5.5
100
95
22
5.5
380
WQK100-7-5.5
150
120
12
5.5
380
WQK45-24-7.5
80
85
35
7.5
380
WQK70-18-7.5
100
110
30
7.5
380
WQK100-12-7.5
150
152
20
7.5
380

How to Select a Pump Model

• Determine required flow rate and total dynamic head

• Verify discharge pipe diameter to match cutter capability

• Evaluate solid composition and fiber length

• Confirm installation depth and submergence condition

• Select appropriate motor power based on continuous duty load

✔ Correct selection ensures effective solid maceration and minimizes pipeline blockage risk.

 Engineering Notes

• Not suitable for high-abrasive mineral slurry

• Avoid operation with excessive sand content

• Ensure adequate submergence to prevent cavitation

• Periodically inspect cutting blades for wear

• Seal integrity must be monitored during long-term operation

Compliance & Quality Assurance

• Factory hydraulic performance testing

• Motor insulation resistance testing

• Hydrostatic pressure testing of casing

• Rotor dynamic balance inspection

• Seal leakage verification

• Optional third-party inspection available

Safety Notice

• Do not operate without full submergence

• Disconnect electrical supply before maintenance

• Do not exceed rated operating current

• Ensure grounding protection is properly installed

OEM & Customization

This pump series supports engineered configuration and duty-based matching. Technical adjustments can be made according to system requirements and installation conditions.

Available options include:

• Motor voltage & frequency
• Cutter material specification
• Mechanical seal configuration
• Cable length and sealing structure
• Surface coating and corrosion protection

Configuration is determined based on duty point and project specifications.

FAQs

Q: What type of solids can the cutter handle?
A: Soft fibrous solids such as cloth, paper, and sanitary waste.

Q: Can the pump operate under VFD control?
A: Yes, provided motor thermal limits are respected.

Q: What is the maximum allowable liquid temperature?
A: ≤ 40°C under standard configuration.

Q: What sealing system is used?
A: Double mechanical seal system.

Q: Is the pump suitable for sandy wastewater?
A: Limited sand content is acceptable; excessive abrasive content is not recommended.

Q: What is the maximum working pressure?
A: ≤ 0.6 MPa.

Q: Does the cutter require periodic inspection?
A: Yes, blade wear should be checked under continuous-duty conditions.