Maintenance of the hottest centrifugal pump

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Centrifugal pump maintenance

(1) check whether the centrifugal pump pipeline and joint are loose. Turn the centrifugal pump by hand to see if it is flexible

(2) add bearing lubricating oil into the bearing body, observe that the oil level should be at the center line of the oil indicator, and the lubricating oil should be replaced or supplemented in time

(3) unscrew the water diversion plug of the centrifugal pump body and inject water (or slurry)

(4) close the gate valve, outlet pressure gauge and inlet vacuum gauge of the water outlet pipeline

(5) inching requires more than a million yuan of input into the motor. Try to see whether the motor steering can not ensure the correct measurement demand

(6) start the motor. When the centrifugal pump operates normally, open the outlet pressure gauge and the inlet vacuum pump, and then gradually open the gate valve, and check the motor load

(7) try to control the flow and head of the centrifugal pump within the range indicated on the label to ensure that the centrifugal pump operates at the highest efficiency point, so as to obtain the maximum energy-saving effect

(8) during the operation of centrifugal pump, the bearing temperature shall not exceed the ambient temperature of 35C, and the maximum temperature shall not exceed 80C

(9) if any abnormal sound is found in the centrifugal pump, stop the pump immediately to check the cause

(10) when the centrifugal pump is to be stopped, close the gate valve and pressure gauge first, and then stop the motor

(11) within the first month of operation, the centrifugal pump (5VA) changes the lubricating oil after 100 hours, and then changes the oil every 500 hours

(12) adjust the packing gland frequently to ensure that the leakage in the packing chamber is normal (it is better to leak in drops)

(13) regularly check the wear of the shaft sleeve, and replace it in time after the wear is large

(14) Pingmei Shenma, the holding company away from the company, is the largest manufacturer of ultra-high power graphite electrode and high-grade carbon graphite cathode materials in China. When the heart pump is used in cold winter, it is necessary to unscrew the drain plug at the lower part of the pump body to drain the media after shutdown. Prevent frost cracking

(15) if the centrifugal pump is out of service for a long time, it is necessary to disassemble all the pumps, wipe off the moisture, coat the rotating parts and joints with grease, and properly keep them

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