Solar-powered water pump features: energy-efficient, starts within 1W, operates on a wide voltage range, and can be equipped with protective functions such as overvoltage, overcurrent, temperature, and dry-run safeguards.

　　Solar brushless pump, solar heat pump, solar circulation pump, solar fountain pump, solar booster pump, photovoltaic solar water pump, wide voltage

　　Circulating water pump, 3V/5V/12V/24V/48V brushless pump, solar submersible pump, solar micro water pump, solar irrigation DC water pump, solar power

　　Fish pond water pump, high-flow DC water pump, split-type solar water pump, wall-mounted solar water pump, and flat-panel solar water pump.

　　The solar photovoltaic brushless DC water pump (magnetic isolation pump) consists of several key components: the pump body (isolation unit), motor stator, shaft, bearings, and rotor impeller (featuring magnets and a turbine wheel).

　　Magnet (neodymium-iron-boron permanent magnet)

　　Permanent magnets made from rare-earth permanent magnet materials boast a wide operating temperature range (-45–400°C), high coercivity, and exhibit excellent anisotropy in their magnetic field direction. Importantly, they do not suffer from demagnetization even when like poles are brought close together, making them an outstanding source of magnetic fields.

　　Isolation component

　　When a metal isolation sleeve is used, it is placed within a sinusoidally alternating magnetic field, inducing eddy currents in the cross-section perpendicular to the magnetic field lines—and these currents subsequently convert into heat. The expression for eddy current is as follows: where Pe represents the eddy current; K is a constant; n denotes the pump's rated speed; T stands for the magnetic transmission torque; F refers to the pressure inside the isolation sleeve; D is the inner diameter of the sleeve; ρ is the material's resistivity; and σ is the material's tensile strength. Once the pump design is finalized, n and T are determined by the operating conditions. Therefore, to minimize eddy currents, the focus must shift to factors such as F and D. Selecting non-metallic materials with high resistivity and high strength for manufacturing the isolation sleeve can significantly reduce eddy currents.

　　Axis

　　Since the brushless DC magnetic isolation pump operates by using an energized coil to drive the rotor's rotation, high-performance ceramic shafts paired with bushings are employed to ensure smooth rotor motion and minimize noise. This design achieves exceptional precision, effectively reducing rotational resistance and lowering operational noise.

　　Rolling bearings

　　The materials for magnetic pump sliding bearings include engineering plastics like POM (polyoxymethylene) or ceramics. Since POM and ceramics exhibit excellent heat resistance, corrosion resistance, and friction tolerance, engineering ceramics are commonly used to manufacture sliding bearings in magnetic pumps. However, because engineering ceramics are brittle and have a low coefficient of thermal expansion, the bearing clearance must not be too small—otherwise, shaft seizure could occur.