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Scientific use of agricultural wells
Agricultural wells are an important irrigation system for farmland and drinking water for humans and animals. They play a pivotal role in combating drought, promoting agricultural production, and solving drinking water for humans and animals. But in many places, due to improper use of wells, resulting in shortened life or frequent pump damage. The scientific use of wells not only protects wells and pumps but also extends the use of the wells. It can also reduce losses, prevent agricultural irrigation, and provide drinking water for people and animals. First, pay attention to the start of the closure. The gate valve at the outlet of the water transmission pipeline is fully opened and starts, often the power of the motor suddenly increases, and it is easy to form a circuit trip or a motor burnout. However, if the lift-off line is turned on for a long time, the air in the pipe cannot be removed and it is driven by the rising water column to cause vibration of the unit and the pipe. Therefore, the opening of the electromechanical well shuts off, and the shut-off is not strict. When the water flows out, slowly opening the valve can increase the service life of the pump. Second, the ban on frequent opening and stopping. Submersible pumps should not be switched on and off too frequently, as the motor is started many times in a row, the starting current is large, the motor must be heated, the heat in the engine is not distributed, and the temperature rise is too high, which will affect the insulation performance of windings and reduce the service life. There is a danger of burning out the motor windings. When the pump is started again after stopping the pump, the interval should be 3-5 minutes. Third, pay attention to shut down the pump. When the submersible pump is deactivated, especially the pump with higher lift, the gate valve on the outlet pipe should be closed first and then shut down to avoid water hammer in the lift pipe line and to avoid damaging the check valve and lift pipe at the pump outlet. Fourth, do not forget to maintain pumping. Well pumping, if the decommissioning time is too long, easy to produce well tube rust knots, machine well water deterioration. Disable the wells Every two weeks or so, a maintenance pumping of not less than 4 hours is required to keep the wells clean and reduce the rust and plugging of the filter tubes, thereby prolonging the life of the wells. For high groundwater salinity and excessive iron content, in addition to regular pumping, a small amount of dilute hydrochloric acid may be injected into the well to relieve the rust of the drainpipe.