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1. **Water Storage Method**: One effective way to supply water to a pump is by using a large bucket or tank. Place this container near the pump, ensuring its base is slightly higher than the pump’s outlet. Alternatively, you could construct a pool beside the pump house, positioning it so that the pool’s bottom is slightly lower than the pump. Connect the bucket (or tank) to the pump using a hose. During downtime, you can manually fill the bucket with extra water for later use. Once the pump starts, gravity will allow the water to flow naturally. This method is simple and efficient.
2. **Self-Priming Centrifugal Pump**: Recently, our country has introduced a new type of agricultural pump called the self-priming centrifugal pump. Unlike traditional pumps, it doesn’t require a valve before startup. Simply pour a small amount of water into the pump initially, and it will automatically draw water once activated. Even after shutting down, restarting requires no additional priming. Our province has developed an SS-type model available in 2-, 3-, and 4-inch sizes, ideal for orchards and farmland irrigation. These pumps are also being used in construction sites for various applications, including sprinkler systems.
3. **Tank Diversion Method**: Another approach involves installing a cylindrical tank before the pump. The tank should have a hemispherical top, with a suction tube positioned at the middle section. Ensure the nozzle is below the tank’s outlet level, connecting the pump’s suction hose to the lower part of the tank. For the first use, fill the tank with water through the inlet and seal it afterward. Once the pump starts, it quickly removes the water from the tank, creating a vacuum that pulls water into the tank. The pump then continuously draws water from the tank in a steady flow.
4. **Vacuum Exhaust Method**: This method uses a small engine equipped with a specialized exhaust device. By attaching the exhaust to the pump, the engine’s exhaust gases create a vacuum effect during operation. To use this method, start the engine first, then press the lever of the exhaust water intake device downwards to close the exhaust outlet. As the exhaust gases exit through the nozzle, their high-speed jet creates low pressure, pulling water and forming bubbles. Once a consistent flow of water and bubbles is visible, the pump begins to draw water. Finally, close the vent on the pump body, lift the lever, and open the exhaust outlet for normal operation. This technique is specifically designed for small gasoline or diesel-powered pumps.
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This version maintains the original ideas while adding more detail and clarity, making it longer and more engaging.
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