A submersible pump is a water-lifting device that operates deep underwater. It combines an electric motor and a water pump, and extracts liquid from deep wells or water areas through the rotation of an impeller. Its core features include a small volume, light weight, and flexible installation, making it suitable for various scenarios such as groundwater extraction, farmland irrigation, and industrial cooling.
The submersible pump mainly consists of a control cabinet, submersible cable, water-lifting pipe, submersible motor, and pump body.
The motor and pump body adopt a sealed design to ensure long-term underwater operation.
Driven by the motor, the impeller rotates at high speed, and liquid is extracted from the well by centrifugal force.
It is suitable for water-lifting projects in deep wells, reservoirs, rivers, and other water areas. The flow rate can reach 5-650 m³/h, and the head range is 10-550 m.
It can handle clean water, sewage, fiber-containing media, etc. Some models support high-temperature (80℃) and high-pressure (20m deep well) working conditions.
Automatic design: Some models are equipped with float switches to realize automatic start and stop, reducing manual operation costs.
Industrial Field: Applied in factory cooling system water supply, wastewater treatment, industrial circulating water transportation, etc., with corrosion resistance and high efficiency.
Agricultural Irrigation: Used for deep well water extraction in arid areas, farmland irrigation, and drainage. Portable models are suitable for mobile operations.
Urban Infrastructure: Used in emergency scenarios such as municipal drainage, sewage treatment, subway station waterlogging treatment, and industrial dredging. Some models support rapid drainage and anti-clogging functions.
Household and Garden: Suitable for rural well water extraction, household water supply pressurization, and garden irrigation. Small stainless steel built-in models are often used for bathtub water supply.
Emergency Rescue: Provides emergency drainage support in scenarios such as mine collapses and flood rescue, with high head and large flow characteristics.
Working Principle:
The submersible pump uses an electric motor to drive the impeller to rotate and generate centrifugal force, which sucks liquid from the suction pipe, pressurizes it, and then discharges it. The core principle and working characteristics are as follows: Driven by the motor, the impeller of the submersible pump rotates at high speed, and centrifugal force is used to suck in liquid and accelerate its discharge. When the impeller rotates, the liquid is thrown around, the pressure in the pump casing gradually increases, and finally flows out through the discharge pipe.
Key Features:
Compact Structure: The submersible pump can work directly submerged in water without a dedicated pump house, saving space.
Easy Installation: Small pumps can be placed freely, while large pumps are equipped with automatic coupling devices for easy maintenance.
Stable Operation: The coaxial design of the motor and impeller reduces vibration, and the bearing load is low, resulting in a longer service life.
Waterproof Performance: Adopting a mechanical seal and a fully enclosed structure, it can withstand water pressure above 0.5MPa.
Wide Applicability: Suitable for various media such as sewage and clean water, with temperature resistance up to 80℃.
With the advantages of efficient direct drive, underwater mute operation, and reduced infrastructure costs, submersible pumps have become the first choice for liquid lifting scenarios. Their technical core lies in the reliability of underwater sealing and the design of medium adaptability. For selection, it is necessary to accurately match the head and flow rate, and strictly implement anti-dry-burning protection and regular maintenance, which can ensure stable operation for more than 10 years.
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