Submersible pump is divided into submersible pumps and self-priming pumps. Submersible pump, also known as water mouse, the entire pump is placed in water to run; self-priming pump is taken to the water layer sucked out. In modern pastoral production, submersible pumps are more and more welcomed by growers for their advantages such as lower price, small size, light weight and convenient water pumping. However, different types of submersible pump its function, power and suction, flow and other differences, many farmers friends to buy due to the lack of professional guidance, in actual use often appear in a large horse-drawn cart or a small cart pulled Situation, a direct result of loss of production and cost waste, and some will also have a safety accident, affecting submersible pump life. This shows that the purchase of a safe and durable submersible pump is very important. First of all, when you buy to see the brand and product quality certification of a standard, qualified pump is manufactured according to ISO requirements, long life, low energy consumption. When the purchase to agricultural machinery sector approved point of sale, recognize the manufacturer, see the grades and product quality certification. Can not buy no manufacturers, no production date, no production license of the three non-products, or in case of problems is difficult to solve. New customers, you can consult the experts in the pump, you can also consult directly with their own use of similar old users, so you can avoid detours. Second, to find out the relationship between pump head and pump flow Pump head does not mean that the lifting of water, it is clear that the choice of pump is particularly important. Pump lift about 1.15-1.20 times the height of the water. For example, a water source to the water at a vertical height of 20 meters, its required lift is about 23 to 24 meters. Therefore, the choice of pump, the pump nameplate lift on the best and the actual required close to the head, so that the most efficient pump, the use of more economical. However, it is not required that the lift on the nameplate of the pump should be absolutely equal to the actual required lift. Generally, the deviation should not exceed 20% and the pump can work under more energy-efficient conditions. Submersible pump head and outlet flow is also a matter of exquisite. High-lift pump for low lift, there will be flow is too large, motor overload phenomenon, if the long run, the motor temperature increases, the winding insulation will accelerate aging, or even burn the motor. If the pump head is far less than the actual lift required, often can not meet the user's wishes, even if it can pump water, the water will be small. Therefore, the choice of water pump out of the water flow generally not too large election, otherwise it will increase the cost of purchasing a pump. Specific issues should be specific analysis, such as user-owned draft self-priming pump, the flow should be selected smaller; if the submersible pump for irrigation, you can choose the appropriate flow larger. Third, to grasp the correct use of the correct operation and use of submersible pump to extend the life expectancy, an important factor in reducing economic losses. Therefore, before the submersible pump starts, we must first check the rotation of the pump shaft is normal, there is no stuck phenomenon; check the location of the impeller is normal; cable and cable plug without rupture, abrasions and broken phenomenon. Operation should pay attention to observe the voltage changes, the general control of the rated voltage within ± 5%. In addition, the location of the submersible pump in the water is very important, should be selected as much as possible in the water, non-silt, good water quality, vertical suspension in the water; Weed ponds to be plus protective filter, and to early clear Impurities, weeds, to prevent the closure of the net. Submersible pumps are not allowed to work transversely to the bottom of the pond to avoid falling into the mud or being obstructed by suspended solids in the inlet of the pump, resulting in a sharp drop in water output or even pumping out of the water. For self-priming pump should be placed in a ventilated, dry place to run, in order to facilitate rapid cooling, reduce the motor temperature. The new self-priming pump to use, to remove the protective plastic film covered in the motor, otherwise easily lead to motor overheating and burn the coil. In addition, before each start, be sure to check the amount of water in the pump body, otherwise it will affect the self-priming performance, and easy to burn shaft seal components. Under normal circumstances, the pump should start 3 to 5 minutes after the water, or should immediately stop checking. Fourth, to regular maintenance inspection, should not be sick work under normal circumstances, the submersible pump should be repaired once every six months, should not be sick work. Pump in the event of failure, do not disassemble yourself, it is best to have the experience, the scale of professional maintenance point of repair, and timely replacement of excess parts and some vulnerable parts. Non-use storage, the pump should be promptly removed from the water, and emptying the pump water, especially in the rainy season or winter, to be placed in a dry place, and the key parts of the pump coated with butter, add in the bearing Lubricant to prevent corrosion of parts. Submersible pump shutdown period is not longer the better, if not used for a long time, easily rust parts, reducing pump life. Therefore, submersible pumps should be used as far as possible throughout the year.
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