Centrifugal pump lubrication of rolling bearings mainly is to reduce friction power consumption, lower wear rate and also act as a cooling, dust, rust and vibration absorbing effect. Good lubrication is to ensure that equipment normal operation. Reduce equipment wear and tear, prevent equipment accidents, reduce the power consumption and prolonging the service life of the repair cycle and effective measures.
Our factory baking furnace circulating water system by use of centrifugal pump is single stage single suction pump, all kinds of technical parameters are as follows:
Models for IS150-125-125, flow rate of 200 m3 / h, 20 m, lift shaft power 18.5 kw, the speed of 1450 r/min.
This type of number of water pump bearing lubrication is by 30 # (winter) or 40 # (summer) mechanical lubricating oil. Due to design dynamic seal leakage is very serious, not only causing huge waste of oil, bearing damage, and pollute the environment, is not conducive to the safe running of the equipment and the civilization production. In the years of work, in order to solve this problem, many times to bend small leather.
1, lubrication mode transformation process
1.1 the felt seal instead of single skeleton oil seal
The original bearing box sealing is sealed with a mantle. Leakage is very serious, each pump fuel consumption is about 300 kg/a, cause a large amount of waste oil, a thick layer of oil on the ground.
In order to change this kind of oil spill, felt for the skeleton, as follows:
(1) inside and outside the end cover of bearing box processing, car out a Φ 65 mm, 12 mm deep hole, put a specification for 45 mm x 60 mm x 12 mm of skeleton oil seal SKF Bearings Inner Diameter http://www.skf-ball-bearings.com/index.htm .
(2) take off will be felt, the skeleton oil seal with a hammer in gently, and installed correctly.
After renovation, equipment operating normally, vibration displacement is about 0.04 mm, the bearing outer temperature of 50 ℃ or so, each pump in oil consumption only 50 kg. Keep the pump room clean sanitation, to eliminate the due to lack of oil bearing, shaft damage accidents, make the equipment running in good condition.