QSZ30-15-4
Outlet 80 mm · Source motor 4 kW
- Flow m³/h
- 16–40
- Head m
- 14–16
- Speed rpm
- 1460
SLURRY HANDLING
Submersible Slurry Pump
Agitate and transfer settled solids below the waterline.
The QSZ submersible slurry pump combines a submerged pump and motor with a bottom agitator for sediment removal, desilting and solids-laden slurry transfer. Review the catalogue operating records, solids conditions, immersion requirements and discharge route before selecting a configuration.
Related resources: Desilting and sediment removal requirements
- Installation
- Fully submerged electric unit
- Wet end
- Wear-resistant hydraulic and agitator components; material and passage depend on the selected model.
- Drive
- Integrated submerged motor
- Selection
- Duty, slurry & applicable curve
Compare catalogue operating records
Catalogue operating records
Range screening only. Flow/head limits are not interchangeable operating points. Open the printed table and request the applicable curve.
| Catalogue model | Outlet mm | Flow m³/h | Head m | Speed rpm |
|---|---|---|---|---|
| QSZ30-15-4 | 80 | 16–40 | 14–16 | 1460 |
| QSZ30-20-5.5 | 80 | 20–40 | 19–21 | 1460 |
| QSZ50-15-5.5 | 100 | 30–70 | 12–16 | 1460 |
| QSZ30-30-7.5 | 80 | 24–36 | 29–31 | 1460 |
| QSZ50-21-11 | 80 | 35–60 | 20–22 | 1460 |
| QSZ100-18-11 | 100 | 70–120 | 15–20 | 1460 |
QSZ30-20-5.5
Outlet 80 mm · Source motor 5.5 kW
- Flow m³/h
- 20–40
- Head m
- 19–21
- Speed rpm
- 1460
QSZ50-15-5.5
Outlet 100 mm · Source motor 5.5 kW
- Flow m³/h
- 30–70
- Head m
- 12–16
- Speed rpm
- 1460
QSZ30-30-7.5
Outlet 80 mm · Source motor 7.5 kW
- Flow m³/h
- 24–36
- Head m
- 29–31
- Speed rpm
- 1460
QSZ50-21-11
Outlet 80 mm · Source motor 11 kW
- Flow m³/h
- 35–60
- Head m
- 20–22
- Speed rpm
- 1460
QSZ100-18-11
Outlet 100 mm · Source motor 11 kW
- Flow m³/h
- 70–120
- Head m
- 15–20
- Speed rpm
- 1460
No catalogue range matches these inputs.
Try a different duty, clear the filters, or send the requirement for a curve review. An empty result does not establish that no pump can meet the duty.
Six example records from the original performance table on physical PDF page 7. Each record has three printed flow/head points. More models remain in the complete manual. Check immersion, solids passage and electrical configuration separately.
Need a model-specific curve?
Provide the actual slurry and operating point so the proposed model, speed and material can be reviewed together.
Submersible Slurry Pump construction and operation
The submersible slurry pump combines a coaxial electric motor and hydraulic end in a unit that operates in the liquid. A bottom agitator disturbs settled solids around the inlet so the resulting mixture can enter the pump. The source describes sediment, sand, cinder and tailings transfer.
This is a submerged electric arrangement, so selection includes cable length, electrical supply, lifting, discharge connection and the required protection functions. The manual describes a mechanical seal and oil chamber; water-ingress and over-temperature detection are configuration options. Confirm immersion and operating limits for the selected unit rather than treating submersibility as unlimited depth or permission for dry running.
- ✓Integrated submerged unitPump and motor share a coaxial arrangement and operate below the waterline.
- ✓Bottom agitationA separate agitator disturbs settled material near the inlet; assess the sediment and required solids loading.
- ✓Protection and handlingDefine cable, lifting and the agreed motor-protection functions with the equipment scope.
Components, materials and seals
Hydraulic impeller
The hydraulic impeller transfers the solids-bearing mixture. Confirm material and the selected model passage against the solids grading.
Bottom agitator
The bottom agitator disturbs settled material around the inlet. Review sediment condition and the required submergence.
Motor, seal & oil chamber
The motor operates submerged. The section also illustrates the manual-described mechanical seal and oil chamber. Confirm the selected voltage, frequency and sealing schedule.
Motor protection & controls
Agree starting, monitoring and protection functions with the electrical scope. Confirm the supply voltage and frequency, cable length and any water-ingress or temperature protection options.
Materials, sealing & duty requirements
| Review item | Required information |
|---|---|
| Wetted components | Wear-resistant hydraulic and agitator components; material and passage depend on the selected model. |
| Sealing / interfaces | Mechanical seal with oil chamber |
| Solids information | Concentration basis, particle distribution, maximum size, hardness and shape |
| Liquid conditions | Complete chemistry, liquid and solids densities, operating temperature |
| Installation information | Liquid depth, electrical supply, lifting and discharge arrangement |
Check the complete operating point
- ✓Normal and maximum flow / head
- ✓Density and concentration range
- ✓Particles, chemistry and temperature
- ✓Site arrangement and operating cycle
AI-generated family illustrations. The selected configuration follows the agreed model and drawing.
Installation & drive arrangement
Submerged operating arrangement
Confirm liquid depth, the minimum operating level and a supported discharge connection. Agree the selected unit’s immersion and operating limits.
Electrical, lifting & protection
Specify cable length, supply, start method, lifting points and the required protection functions. The cable is not a lifting device.
- ✓Cable and power supply
- ✓Lifting and access
- ✓Supported discharge
- ✓Operating liquid level
Typical applications
Application descriptions are selection contexts. Suitability depends on the selected equipment and actual process conditions.
Sediment removal
Describe sediment depth, particle grading, liquid depth and the intended lifting method.
Industrial sump cleaning
Coordinate agitation, discharge hose or pipe, access and safe electrical isolation.
Solids-laden transfer
Specify concentration changes and discharge distance so the submerged unit and pipeline can be reviewed together.
Choose the supply scope
Select a scope below to carry it into the enquiry. The final equipment and documents are defined in the quotation.
Submersible pump unit
Hydraulic end, agitator, submerged motor and sealing in the selected arrangement.
- ✓Selected model and duty
- ✓Motor and cable specification
- ✓Wet-end material
Installation equipment
Define the discharge connection, cable support and lifting interfaces.
- ✓Discharge interface
- ✓Lifting arrangement
- ✓Cable routing
Controls & protection
Agree starting, monitoring and protection functions with the electrical scope.
- ✓Voltage and frequency
- ✓Start and protection functions
- ✓Installation documentation
Define what arrives with the equipment
Equipment & interfaces
Selected pump, materials, seal, drive, connections, mounting and any required auxiliary services.
Inspection & documentation
Agree drawing revision, inspection requirements, applicable acceptance criteria and the documents required with delivery.
Packing & service spares
Specify preservation, packing, identification and an initial spare-parts list appropriate to the maintenance plan.
From preparation to shipment
Casting & material preparation
Prepare cast hydraulic components to the approved material and drawing for the agreed supply. Actual alloy and geometry follow the order specification.
Machining & interfaces
Machine connection and mounting features to the applicable component drawing and revision.
Inspection & records
Agree dimensional checks, electrical checks and any witnessed tests or records in the supply scope. The reference shows general workshop laboratory equipment, not a QSZ-specific test record.
Packing & handover
Protect the pump, cable and agreed accessories for transport; confirm identification and handover documents.
Technical documents
Original source catalogue
Original series introduction, drawings and available technical tables.
Slurry family brochure
Product arrangements and original family drawings. Confirm the applicable series and model.
Selected curve & arrangement
Request the applicable curve, materials, dimensions and installation instructions.
Pump questions
Does the agitator replace all site preparation?
No. It mixes material near the inlet. Sediment condition, oversize debris, lifting, discharge routing and the operating liquid level still need review for the installation.
How is the pump selected?
Start with flow, total dynamic head, slurry density, solids concentration and size, temperature, chemistry and installation. Review these together on the applicable curve.
Are the images dimensional drawings?
Catalogue drawings show the source construction. Family exterior references and illustrative components are labelled. Use the selected model’s approved arrangement drawing for dimensions and installation.
What is included in the quotation?
The selected supply scope, materials, interfaces, inspection requirements, spares and documents must be agreed in the quotation. An illustration alone does not define the delivered equipment.
What if there is no numerical table on this page?
Send the operating requirement for a model-specific curve review. A product introduction or family envelope cannot replace a selected pump curve.
How do I use this enquiry form?
Choose any model, installation and supply options above, complete the required fields, and prepare a draft. Review it before copying, downloading or opening it in your email application.
Tell us about your slurry duty
Share the liquid, operating point and site arrangement for a useful selection discussion.
- ✓Operating pointFlow, head and operating range.
- ✓SlurryDensity, concentration and particles.
- ✓InstallationLiquid levels, drive and utilities.