5 large pump failure and solution
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May 19 09:10:10, 2023
Pumps are machines that transport liquids or pressurize liquids. In operation, it is inevitable failure and damage, resulting in normal pumping. The following are several common pump failure and troubleshooting. Unable to start: check the power supply situation; whether the connection is solid; whether the switch contact is tight; whether the fuse is blown; whether the three-phase power supply is equal and whether it is a mechanical failure of the pump itself. Remedy: relax the filler, clear the diversion trough; open the pump body to remove debris, rust; remove the pump shaft to correct or replace the new pump shaft. Absorption of water: the pump body may have air or water pipe gas, or at the end of the valve is not strict Irrigation irrigation dissatisfaction, vacuum pump filling serious leaks, gate valve or rattan closed lax. Remedy: ①first pressure on the water, and then filled with water pump, and then boot. ② Check the check valve is tight, piping, fittings leaks or not. ③ check the pump shaft seal ring, such as serious wear and tear should be replaced with new pieces. ④ pipeline leakage or leakage, the screw may be installed when the screw is not tight, if the leakage is not serious, in the place of leakage or leakage painted cement, or painted with asphalt mixing asphalt slurry; if the joint leaks , Use a wrench to tighten the nut; if serious water leakage, you must reassemble and replace the cracked pipe. ⑤ lower head, the pump nozzle into the water pressure 0.5m. Insufficient flow: reasons: ①power speed does not support or belt slippage, so that the speed is low; ② axial flow pump blade mounting angle is too small; ③ insufficient head, the pipe is too long or the pipe has a right-angle bend; ④ suction stroke is high; ⑤ at the end of the valve, piping and impeller partial plug or impeller defect; ⑥ serious leakage of water pipes. Remedy: ①to restore the rated speed, remove the belt grease, adjust the belt tightness; adjust the blade angle, reduce the pump installation location, shorten the pipe or change the pipe curvature; ② sealed pump leak, Clear the blockage, replace the impeller; replace the leak ring, plug the leak. Severe vibration: the rotor may be unbalanced, or bad coupling, bearing wear and tear; may also rotate part of the parts loose, rupture; may be due to the pipe stent is not strong and so on. Can be taken to adjust, repair, reinforcement, straightening, replacement and other methods. Leakage or leakage of piping: Nuts may not be tightened during installation. If the leakage is not serious, in the place of leakage or leakage coated with cement or asphalt mixing oil slurry. Temporary repair can be painted wet mud or soft soap. If the joints leak, you can manually tighten the nut. Leak serious must re-disassembly. Pump failure occurs, we must promptly identify problems, correct troubleshooting.