Solar Water PumpPrior to operation, the pump chamber must be filled with liquid, thus giving rise to the self-priming device. The need for a self-priming device is based on the working principle of solar water pumps. If the configuration of the solar water pump passes the test, it would not require a self-priming device during normal use. When does a solar water pump require a self-priming device? Only when the impeller is rotating..."Substantial" objects can be propelled outward from the center, creating a distinct vacuum at the core. Clearly, if the pump chamber of a solar water pump is filled with air, no vacuum can be formed regardless of how fast it rotates.
What are the different forms of self-priming devices?
Firstly, self-priming devices come with an integrated vacuum pump; some pumps are already self-priming, such as fire emergency pumps. The drawback of this type is that the pump structure becomes more complex, larger in size, and requires ensuring the water tank is full every time it starts up.
Another method utilizes compressed air to evacuate the pump casing and draw in water; before starting the solar water pump, during the operation of the self-priming unit, the valve on the discharge side must remain closed, or a spring-loaded back pressure valve should be installed, when the discharge pressure reaches the normal operating pressure60%Left-hand automatic opening, the vacuum suction must be connected to the high side of the pump inlet, and placed in the suction pipe to form an air cavity. Typically, a reduced-pressure compressed air line is connected, utilizing the Venturi tube effect to create a vacuum inside the pump casing, fill with water. This device allows for a short-term dry run of the centrifugal pump.
Brushless Direct-Drive Water PumpThe adoption of electronic component reversing eliminates the need for carbon brush reversing. High-performance, wear-resistant fine steel shafts and sleeves are used, with the sleeves molded and integrated with magnets to prevent wear, significantly enhancing the lifespan of brushless DC magnetic pumps. The stator and rotor parts of the magnetic isolation pump are completely isolated, with the stator and circuit board sections encapsulated in epoxy resin.Waterproof design, featuring permanent magnet rotors and environmentally friendly materials in the pump housing, offers low noise, compact size, and stable performance. Capable of adjusting various required parameters through the stator winding, it operates efficiently on a wide voltage range.
