Open centrifugal pump maintenance code
Preparation before starting to ensure the safe operation of the open centrifugal pump, boot before doing the necessary checks. Slowly turn the coupling or pulleys by hand first, and observe whether the pump is turning correctly, whether the rotation is flexible and stable, whether there are any debris in the pump, whether the bearings are running properly, whether the belt is tight, whether all the screws are firm, Prevent the operation of debris; check the depth of the submerged suction pipe is sufficient; have to close the valve to reduce the start-up load, and pay attention to promptly open the valve after the start. Check the operation of the boot, you should check whether a variety of instruments working properly, the current should not exceed the rated value. Pressure gauge pointer should be in the design range; check the open centrifugal pump out of water is normal, check the various parts of the unit is leaking; check the packing compaction, usually at the filler should be a small amount of leakage (no more than 10-20 per minute Drop), mechanical seal leakage should not exceed 10mL / h (about 3 drops per minute); rolling bearing temperature should not be higher than 75 ℃; sliding bearing temperature should not be higher than 70 ℃ and note the presence or absence of abnormal noise, abnormal vibration, attention Reduce the water situation; timely adjustment of the submerged depth of the water inlet; regular removal of debris on the trash rack; through the belt drive, but also pay attention to whether the belt slipping. Shutdown and shutdown precautions should be shut down before shutting down the outlet valve and then shut down to prevent water backflow, damage to the parts; each shut down, should promptly wipe the pump body and piping grease, keep the unit clean, timely Found hidden dangers; winter shutdown, should immediately drain the water to prevent the cracking of the pump body and internal parts; at the end of the season to make the necessary maintenance of centrifugal pump periodic inspection ISGD, IRGD low-speed vertical pipeline pump Periodic inspection generally can be divided into the following three: daily inspection, that is, the use of the inspection, as described above; monthly inspection, without dismantling the parts under the condition of cleaning and minor equipment appearance, including the bearing temperature, shaft seal Leakage reasons and motor insulation and other aspects of the inspection; regular maintenance, including the replacement of shaft seal lubricants, check the pump and motor alignment Check sleeve wear, check the coupling rubber ring damage, cleaning mechanical seals, coolant filtration Pumps and filters, check the sliding parts wear, check the contact with the liquid parts damage, corrosion and so on.