The working principle of deep well submersible pump

Open pump, the suction pipe and pump inside is full of liquid. After open pump, high-speed rotating impeller, the liquid with the blades rotate together, under the effect of centrifugal force, fly away from the impeller to injection, injection of the liquid in the pump shell dispersed indoor speed gradually slow down, pressure increase gradually, and then from the pump discharge, the discharge pipe flow. At the moment, in the blade because the liquid was dumped into the surrounding, there is no air and no liquid vacuum low pressure area, the liquids in the liquid pool under the effect of atmospheric pressure on surface of the pool, the suction pipe into the pump, the liquid is continually from the liquid pool was sucking up and continually from the discharge pipe flow. 1. Electric pump before use, apply to check the motor insulation resistance by megger are, its value can not less than 5 ohms. Check method is to connect a terminal on the megger on electric water pump cables, another terminal on the motor shell, swinging megohmmeter, investigation of insulation resistance. 2. Check the submersible cable has the phenomenon such as crack, scratch, if there are any damage should be timely exchange, in case of leakage. 3. Should open irrigation water motor bolts, filled with clean water after tightening bolts, into the water again. Oil motor oil is found, should be replaced after packing element into the water again. 4. Before the electric pump into the water, should be to pump water infusion in qing dynasty, idling 1 - 2 seconds, and 2 times, look at idling and launch is normal. If turned to the contrary, the two-phase wiring after changing. 5. See Yang pipe crack, cohesion is strong. 6. Pumps in submerged or lift, not pull the cable, so as to avoid cable damage or disconnect joint. 7. Supply voltage should be controlled in not greater than or less than 5 additional voltage range, if the voltage is too high or too low will damage motor. 8. Electric pump into the water should be vertical and may not be inclined. 9. Pumps shall not transporting sediment concentration more water or mud. Water motor should often clean up the lumen of the grains of sand, replace the motor chamber clean water. 10. The actual pump head should be 0. 8 - 1 times the additional lift. Which can increase work efficiency of pumps, power-saving, to prevent motor overload operation, to extend the service life. 11. Electric pump after use, should be washed clean, besmear antirust oil in metal surface, and the vertical in a dry place. Water motor should also put a net in the water. ( All the above content from the network, if you have questions, please contact me delete)
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