Causes and troubleshooting of common faults of the

Causes and troubleshooting of common faults of agricultural water pumps

causes and troubleshooting of common faults of agricultural water pumps:

agricultural water pumps are the main irrigation machinery for drought resistance and seedling protection. It is inevitable that the pumps will fail and be damaged during operation, so that they cannot pump water normally. Therefore, the common faults of water pumps must be eliminated in time to ensure farmland irrigation water

first, the water pump does not discharge water:

the reasons are that the pump body and suction pipe are not filled with water, the bottom valve is stuck, and the filtering part is blocked, and the suction height is too high It may also be due to the wrong rotation of the blade, and the channel may be blocked. After checking one by one, measures such as troubleshooting the bottom valve, filling the water, removing the blockage, correcting the steering, and cleaning the impeller can be taken respectively

II. The pump body vibrates violently or produces noise:

the reason is that the water pump is not installed firmly or the water pump is installed too high; The motor ball bearing is damaged; The water pump spindle is bent or not concentric or parallel with the motor spindle. The installation height of the water pump can be stabilized or reduced; Replace the motor ball bearing; Correct the bent water pump spindle or adjust the relative position of the water pump and motor

III. water or air leakage in the pipeline:

the nut may not be tightened during installation. If the leakage is not serious, apply cement or cement slurry mixed with asphalt oil at the place where the air or water leaks. For temporary repairs, apply some wet mud or soft soap. If there is water leakage at the joint, the nut can be tightened with a wrench. If the water leakage is serious, it must be disassembled again

IV. overheating of packing:

the packing is too tight, and the cooling water cannot enter the packing or the shaft surface is damaged. Appropriate measures can be taken to loosen the packing and clean up the blockage of the sealing pipe. The worn packing must be replaced with a new one. Before installation, the filler should be soaked in the engine oil and installed circle by circle. The incision should be staggered. In the opinion of Chen Weidong, chairman of dongfanshi Energy Consulting Co., Ltd., water leakage can be reduced After the last ring of packing is installed, the tightness shall be adjusted when the cover is running. Valve import pump industrial washing machine

v. pump shaft defects:

pump shaft bending is mostly caused by impact load, belt tension or incorrect installation. If the bending is not severe, it can be corrected with manual screw corrector, but the force should not be too strong. If the pump shaft is cracked or broken, it can be repaired by welding, welding or calcining, and then tempered, turned and ground

VI. impeller disassembly:

impeller blades are damaged or subject to cavitation erosion, which lays a foundation for high-molecular composite materials to enter the ranks of advanced countries in the world. There are many pits on the affected surface, which should be replaced or plated with cemented carbide. When the wear is not large, it can also be poured When disassembling, first fix the impeller and pump shaft, loosen the nut or the joint screw of the transmission device, and then rotate the thimble screw to gradually pull out the transmission device. Then remove the shaft from the pump housing, remove the impeller and send it to the repair shop for repair