Common faults and maintenance methods of agricultural small water pump

Pump fever

Reason: bearing damage; rolling bearing or bracket cover clearance is too small; pump shaft bending or two axes are not the same; tape is too tight; lack of oil or poor oil quality; impeller balance hole clogging, impeller out of balance, increased Thrust to the side.
Remedy: Replace the bearing; Remove the back cover, install the gasket between the bracket and the bearing seat; Investigate the pump shaft or adjust the concentricity of the two shafts; Adjust the tightness of the tape properly; Fill the clean butter and butter About 60% of the gap; clear the balance hole plug.

【Insufficient traffic】

Reason: the power speed is not matched or belt slippage, so that the speed is low; axial pump blade mounting angle is too small; insufficient head, the pipe is too long or the pipe has a right angle bend; suction stroke; Local blockage or impeller defect; serious leakage of water pipe.
Remedy: restore the rated speed, remove the belt grease, adjust the belt tightness; adjust the blade angle, reduce the installation location of the pump, the curvature of the road; seal the pump leak, compaction packing; remove clogs, replace the pump impeller; Replace the leak ring, plug the leak.

Absorbing water

Reason: There is air or water in the pump body gas, or the bottom valve is not strict Irrigation filling dissatisfaction, vacuum pump filling serious leaks, gate valve or pat door closed lax.
Remedy: First water pressure up, and then filled with water pump, and then boot. At the same time check the check valve is tight, piping, fittings leaks, such as found leakage, remove the joint at the joints coated with oil or paint, and tighten the screws. Check the pump shaft seal ring, such as serious wear and tear should be replaced with new pieces. Piping leaks or leaks. Nuts may not be tightened during installation. If the leakage is not serious, can be smeared in the place of leakage or leakage of cement, or coated with asphalt mixture of cement slurry. Temporary repair can be painted wet mud or soft soap. If the joint leaks, you can use a wrench to tighten the nut, if serious leakage must be re-disassembly, replacement of cracked pipe; reduce head, pump the nozzle into the water 0.5 meters underwater.

Severe vibration

Reason: The electric rotor is unbalanced; the coupling is bad; the bearing is worn and bent; the parts of the rotating part are loose and broken; the support of the pipeline is not strong and so on.
Remedy: Respectively to adjust, repair, reinforcement, straightening, replacement and other methods.

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