1. Self priming centrifugal pump is a new type of agricultural water pump designed and manufactured in our country in recent years. It is not the end of valve, before starting to pump the water poured into a small, start, can automatic vacuum water. After the shutdown, then start the next time, you do not need to carry out irrigation. Therefore, it is very convenient to use. In recent years the development of our province ZX type self-priming centrifugal pump, the specifications are 2, 3 and 4 inches, suitable for irrigation of farmland and orchard. In addition, in order to develop the sprinkler irrigation technology, our country has combined the design and production of BPZ type six specifications of the self suction sprinkler pump series products. This type of pump is not only used in agriculture, it is also widely used in construction sites.
2. Storage method water filling with a barrel or water storage tank of water, it placed in the vicinity of the water pump, and the water outlet end slightly higher than the pump barrel; or is in close to the pump side of the construction of the pool, the bottom of the pool decreased slightly, the formation of a storage pool. Water barrels (or pool) and the pump connected filled hole. Stop before using the outlet pipe of water flowing into buckets filled with spare, starting next time, gravity can be filled with water. This method is full of water, and is easy to use.
3. The engine exhaust vacuum filling method, the small engine muffler unloaded, fitted with a special exhaust diversion device, the engine working process in the discharge of waste gas, pumping out the air in the pump, the pump produces a certain vacuum degree. Operation, before starting the engine, and then the exhaust diversion device of hand pressed down and close the exhaust outlet, exhausted from the engine exhaust gas, through the exhaust gas jet nozzle discharge, because of the exhaust jet velocity, low pressure, resulting in the role of aspiration. When there are continuous gas water mixing bubbles appear, the pump will start to absorb water. Then close the pump body on the water filled exhaust holes, then lift the handle, open the exhaust outlet, the pump is transferred to the normal work. This water filling method is only suitable for small gasoline or diesel engine as the power of small diameter water pump.
4. Before the pump tank water in the pump before the installation a cylinder shaped water tank, tank top for the hemispherical protrusions, the central device in the cabinet a suction pipe and the nozzle below and the height of the barrel body, cabinet body bottom outlet and pump suction pipe connection. Tanks for the first time before use, from the water inlet of the water tank full of water, and then fully closed outlet. Start the pump, instant water pump in the tank water is pumped out, water level gradually decreased, the volume increases, forming vacuum, suction, to suck suck the pools of water to the tank, the pump continues to run, the water continuously being pumped out.
