1. Water storage method: Use a large wooden bucket or water tank to store water, place it near the pump, and make the bottom of the bucket slightly higher than the outlet of the pump; or when building a pool on the side close to the pump room, Slightly lower the bottom of the pool to form a reservoir. Connect the barrel (or pool) with the water filling hole of the pump body with a water pipe. Before shutting down, fill the bucket with water from the outlet pipe for later use. The next time it starts, it can be filled with water automatically. This method is water-filled and easy to use.
2. The self-priming sanitary pump is a new type of agricultural water pump designed, manufactured and popularized in China in recent years. It does not need a bottom valve. Before starting, a small amount of water is poured into the pump. When starting, it can automatically draw a vacuum and draw water. After stopping, when restarting next time, there is no need for watering. Therefore, it is very convenient to use. The SS self-priming centrifugal pump developed in our province in recent years has specifications of 2, 3, and 4 inches, which are suitable for irrigation of orchards and farmland. In addition, in order to develop sprinkler irrigation technology, my country has jointly designed and produced six specifications of self-priming sprinkler irrigation pump series. This type of pump is not only used in agriculture, but also widely used in construction sites.
3. The water diversion method of the water tank before the pump. Install a cylindrical water tank in front of the water pump. The top of the cabinet is a hemispherical protrusion. A suction pipe is installed in the middle of the cabinet. The nozzle is lower than the height of the cylinder. The outlet of the lower part of the cabinet is connected to the water pump. Suction pipe connection. Before the water tank is used again, fill the water tank with water from the water filling port, and then close the water filling port. Start the water pump operation, and the water pump will pump the water away from the water tank at an instant. The water level gradually drops and the volume gradually increases to form a vacuum state and generate suction, thereby sucking the water from the suction pool into the water tank. The pump continues to run, and the water is Be pumped out continuously.
4. The muffler of the small engine is removed by the engine exhaust, vacuum and water filling method, and a special exhaust gas diversion device is installed. The exhaust gas discharged during the engine working process is used to extract the air from the water pump to make the water pump produce a certain degree of vacuum. . During operation, start the engine first, and then press the handle of the exhaust water diversion device down to close the exhaust outlet. The exhaust gas from the engine is discharged through the exhaust gas injection nozzle. Due to the high jet velocity and low pressure of the exhaust gas, the suction effect is produced. . When seeing continuous air-water mixing bubbles appear, the water pump starts to absorb water. Then close the water-filled exhaust hole on the pump body, then lift the handle, open the exhaust gas outlet, and the water pump will start to work normally. This water filling method is only suitable for small-caliber water pumps powered by small gasoline or diesel engines.