Agricultural water pumps are widely used, how to properly use and maintain agricultural water pumps for irrigation, drainage and pump the normal operation and life is essential. First, the installation of the pump Installation and calibration of the pump is a crucial first step, although the pump unit has been corrected at the factory, but due to transport, assembly and other reasons, will lead to varying degrees of deformation or loosening, therefore, the pump at installation To install while correcting. 1. Installation Procedure (1) Clear the grease and dirt on the base and place the base on the foundation. (2) Check the level with the level of the base. (3) cementing base and anchor bolt holes. (4) After the cement is dried up, check whether the hole of the base and anchor bolt is loose, tighten the anchor bolt properly, and check the level again. (5) Clean the support plane of the base, the pump foot and the motor foot plane, and install the pump and motor on the base. (6) Check and adjust the coincidence of the pump and the motor shaft centerline, check the pump shaft and the motor shaft centerline is consistent, the difference between the upper and lower sides of the outer circumference of the two couplings does not exceed 0.1 mm, available sheet adjustment to concentric, Two coupling end gap 2-3 mm. 2. Pump Installation Notes (1) The actual suction pump suction stroke must be lower than the suction pump. (2) The inlet pipe of the pump should be as short and straight as possible, and should not protrude upwards or be higher than the pump on the horizontal line to avoid the increase of cavitation when the pump is running and reduce the efficiency. (3) Pump outlet pipe should be properly expanded, and as close to the water surface, too high or too low will increase power consumption. Long-distance delivery should take a larger diameter. Pump piping should be dedicated bracket, does not allow piping weight added to the pump, to avoid the pump crushed. (4) The distance between the bottom valve of the pump and the inlet pipe from the bottom of the water source and the edge of the water source shall not be less than the diameter of the water inlet pipe. The water inlet pipe depth shall not be less than 0.5 meters. When installing more than two pumps, the distance between the bottom valve or inlet shall not be less than 2 times the OD of the bottom valve or inlet. (5) The discharge pipe check valve should be installed outside the gate valve, the pump lift 20 meters above should be installed check valve. (6) The diameter of the pulley should be calculated according to the speed calculation. When calculating the pulley diameter according to the formula, the factors of tape slippage should be considered and the calculated value should be properly adjusted. Second, the pump start, stop and run the pump start, run and stop in strict accordance with operating procedures. 1. Startup (1) When starting the pump, it should be determined before the pump connected to the motor rotation direction is correct, the pump rotation is flexible. (2) Turn off the gate valve on the discharge line. (3) fill the pump with water, or use a vacuum pump. (4) Turn on the power. When the pump reaches the normal speed, then gradually open the discharge valve on the pipeline, adjust to the required conditions. In the discharge pipe gate valve closed case, the pump can not work more than 3 minutes. 2. Operation (1) During start-up operation, observe the readings of the instrument, temperature rise and heat of the bearing, leakage of packing material and vibration and noise of the pump. If abnormal conditions are found, they should be dealt with promptly. (2) The maximum bearing temperature shall not exceed 80 degrees Celsius, or may not exceed 40 degrees Celsius ambient temperature. (3) normal packing, water leakage should be a small amount of uniform. (4) Lubrication with oil, the bearing oil level should be maintained in the normal position, not too high or too low, such as low, it should be timely replenishment of oil. When the grease is lubricated, the new pump should be replaced after 300 hours of operation. After every 1500 hours of operation, the oil should be changed. Ambient temperature below 0 degrees Celsius, suitable for oil lubrication; ambient temperature above 0 degrees Celsius, suitable for grease lubrication. 3. Turn off the discharge valve gradually after shutting off the gate valve. Third, the pump maintenance and repair In addition to using the pump in strict accordance with the installation instructions, should also pay attention to two things: First, avoid by no means "experience." For example, when the pump leaks at the end of the valve, some machine tools save trouble. Before each start-up, first fill the dry pipe with the inlet pipe and then flush the soil with the flushing valve at the end so that the valve at the bottom will not leak. This method looks easy, but not enough. Because when the pump starts to work, the bottom valve of the sand will enter the pump with water, wear impeller, pump housing and shaft, etc., seriously affecting the service life, the correct method should be overhaul the bottom valve, it can not be repaired Timely replacement. Second, find out the fault should be promptly eliminated, should not allow the crew "sick" work. For example, found that the pump shaft packing wear serious, to increase the filler, otherwise it will make the pump shaft packing leak. Pump shaft packing leaks not only make the unit energy consumption is too large, and cavitation will occur to speed up the damage to the impeller, a direct impact on pump life. As another example, found that the pump vibration, should immediately stop checking, if the pump shaft bending deformation is likely to occur safety accidents. Pump units and pipelines in use for a period of time, should do the following maintenance work: (1) drain all the water pumps and pipes. (2) If the disassembly is convenient, the pump and pipeline can be removed and cleaned. (3) Check the ball bearings, such as jacket wear, Kuang, ball wear or the surface of the spots have to be replaced. Can still be used to clean the bearings with gasoline or kerosene butter preserved. (4) Inspect the impeller for any cracks or small holes, and if the impeller is loose, repair or replace if damaged. Check the impeller wear ring gap, if more than the specified value, should be repaired or replaced. (5) When the pumps and pipes are not disassembled, cover the export with a cover to prevent debris from entering. (6) When the transmission tape is not used, the tape should be removed, washed with warm water, dried and stored in the place without direct sunlight, nor stored in places with oil, corrosives and smoke. In any case, do not let the tape stained with oil, diesel or gasoline and other oil substances, not to tape coated rosin or other viscous material. Before use, remove the white powder from the contact surface of the tape. (7) Scrub all screws and bolts with steel wire brush, apply oil or dip in diesel oil.
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