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, install step gather (1) clear the base of greasy and dirt, the base on the foundation. (2) Check the level of the base level, allowing the use of wedge leveling. (3) cementing base and anchor bolt holes. (4) After the cement is dry, check the base and the ground screw holes are loose, appropriate tighten the Anchor Bolts, re-check the level. (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 whether the pump shaft and the motor shaft center line are the same, the difference between the upper and lower left and right sides of the outer circumference of the two coupling shafts should not exceed 0.1mm, Two coupling end face leaving clearance 2-3mm. 2, the pump must pay attention to the installation: (1) the actual suction suction pump must be lower than the pump suction stroke. (2) The inlet pipe of the pump should be as short and straight as possible, and should not protrude upward or be higher than the pump on the horizontal line to avoid the cavitation increase and the decrease of efficiency when the pump is running. (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, do not allow piping weight on 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 outer diameter of the bottom valve or inlet. (5) discharge pipe check valve should be installed outside the gate valve, pump head should be installed above 20 meters check valve. (6) The diameter of the pulley should be calculated according to the speed calculation. When calculating the diameter of the pulley according to the formula, the factor of the tape slipping 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, start (1) pump start, the pump should be connected before the connection to determine the direction of rotation of the motor 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 normal speed, then gradually open the discharge valve on the pipeline, and adjust to the required conditions. In the discharge tube gate valve closed case, the pump can not work more than 3 minutes. 2, running (1) During the boot operation, we must observe the instrument readings, bearing temperature and heat, packing leakage and heat and pump vibration and noise are normal, if abnormal, should be promptly addressed. (2) The maximum bearing temperature is not more than 80 ℃, or not more than 40 ℃ than the 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 ℃, suitable for oil lubrication; ambient temperature above 0 ℃, suitable for grease lubrication. 3, stop closing the discharge valve gradually cut off the power supply. Third, common faults and troubleshooting 1, the pump does not water. The first is to pump filled with water to exclude the tube of air; second is to reduce the pump suction height, so that the pump within the normal suction range; Third, check the bottom valve and the impeller to see if the end valve has been opened, there is no Mud silt, if necessary, to clean the impeller. Fourth, check the power system to see if the power cord is wrong, the rotation direction is correct. 2, pump a small amount of water. First, lack of speed, check the power system. Second, the sealing ring and impeller mouth ring parts wear serious replacement seal ring and impeller. Third, the end of the valve, impeller debris, demolition of the bottom valve and impeller and remove debris. Fourth, the suction pump suction over its rated suction, the pump during the work, the water level will drop, it will make the pump in the superabsorbent state work, it is determined that more than 0.5 meters suction pump, the water will be reduced by 20 % Or so, should be taken under the pump or installation should take into account the water level drop and other measures to make the pump suction in the normal range. Fifth, the export pipeline resistance, water damage, should shorten the pipe or increase the diameter. Sixth, the pump head is too large, according to the actual head and calculate the water damage to re-select the appropriate flow of the pump. 3, abnormal noise inside the pump. First, the flow is too large, to reduce the outlet gate valve opening or increase the resistance of the outlet pipe to reduce the flow. Second, there is air infiltration, check the suction pipe is not sealed, plug the leak. Third, the suction stroke is too high, reducing the height of water absorption. 4, bearing overheating, pump vibration. First, there is no oil, to add oil. Second, the pump shaft bending. Once the pump vibration, should immediately overhaul. If the pump shaft bending is not serious, manual screw correction can be used, and then re-use, if serious bending, should be replaced immediately. Third, axial bearing clearance, bearing cap end plus paper pad adjustment. Fourth, the drive tape is too tight, adjust the position. 5
brass machine screws,stainless steel machine screws,flat head machine screws
Jiangsu Minglu Stainless steel Co.,ltd , https://www.minglufastener.com