Submersible Wastewater Pump
Basic Positioning: Main Force for Universal Wastewater Conveyance
As the basic model in the submersible pump family, the submersible wastewater pump adopts an integrated sealed design of motor and pump body, which can operate completely submerged in wastewater. This submersible wastewater pump is specially designed for conveying domestic and industrial wastewater containing a small amount of solid particles (diameter ≤50mm) and suspended impurities, and is a standard equipment for sewage discharge systems in various fields. It mainly follows the working principle of centrifugal pumps: the motor drives the impeller to rotate at high speed to generate negative pressure for sucking in wastewater, which is pressurized by centrifugal force and discharged through the water outlet, realizing efficient wastewater conveyance.
Structural Design and Core Performance
Structurally, it adopts a cast iron pump body (economical and durable) matched with a semi-open impeller, featuring basic anti-clogging capability. The motor has the highest IPX8 waterproof rating, and the double mechanical seal effectively prevents wastewater from seeping into the motor cavity.
The key performance parameters cover universal scenarios
|
Parameter Name (Symbol) |
Core Function |
Range |
|
Flow Rate (Q) |
Indicates the hourly sewage delivery capacity and determines sewage discharge efficiency |
1-1000m³/h (Small-sized: 1-50m³/h; Large-sized: 50-1000m³/h) |
|
Head (H) |
Determines the sewage lifting height and long-distance conveying capacity |
5-100m (Small-sized: 5-30m; Large-sized: 30-100m) |
|
Power (P) |
Motor driving power, directly affecting the upper limits of flow rate and head performance |
0.75-320kW |
|
Caliber (DN) |
Diameter of water inlet and outlet, which shall match the on-site sewage pipe size |
25-300mm |
|
Medium Temperature |
Adapts to sewage of different temperatures to avoid equipment damage |
Normal Temperature Type (≤40℃); High Temperature Type (≤100℃) |
|
Medium Concentration |
Refers to the solid particle content in sewage, affecting the pump's anti-clogging and wear resistance |
Solid Content ≤10%-30% |
|
Parameter Name (Symbol) |
Core Function |
Common Range/Description |
|
Flow Rate (Q) |
Volume of fluid delivered per unit time, reflecting the pump's delivery capacity |
Several L/min to thousands of m³/h; Common units: m³/h, L/min |
|
Head (H) |
Energy obtained per unit weight of fluid, reflecting the pump's ability to overcome resistance and lift fluid |
Single-stage ≤125m; Multi-stage up to thousands of meters (Unit: m water column) |
|
Rotational Speed (n) |
Impeller rotation speed, matched with the motor, directly affecting flow rate and head |
Common: 2900r/min, 1450r/min |
|
Efficiency (η) |
Ratio of effective power to shaft power, reflecting energy conversion efficiency |
Ordinary type: 90%-98%; Highest efficiency under design conditions |
|
Net Positive Suction Head (NPSH) |
Minimum suction pressure margin to prevent cavitation in the pump and protect the impeller |
Unit: m; Device margin must be greater than required margin |
|
Medium Adaptability |
Determines the material selection of pump body and components to ensure equipment durability |
Including temperature, viscosity, corrosiveness, solid content; Select materials as needed |
Core Advantages and Application Scenarios
Its biggest advantages are outstanding cost performance and convenient installation and maintenance. It does not require the construction of a dedicated pump room, and vertical installation occupies a small space. The submersible wastewater pump is widely used in scenarios such as domestic sewage discharge in residential areas and office buildings, temporary sewage discharge of municipal pipe networks, wastewater treatment in small factories, and rural sewage treatment. It is especially suitable for sewage discharge needs that are cost-sensitive and have relatively simple sewage components.
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