How to maintain the bearings of acid and alkali resistant chemical pumps?

　　Chemical pump bearings when used often lead to pump shaft erosion due to seal leakage, so I made a summary of the common chemical pump bearing maintenance and disassembly methods, centrifugal pumps can mostly use the same method of maintenance, special pumps need special consultation for maintenance and disassembly.

　　Acid and alkali chemical pump bearing maintenance methods and disassembly

　　1. For the new put into use of acid and alkali chemical pump, generally in the operation of more than 100 hours after the need to replace the grease, and then every 500 hours of operation need to be replaced.

　　2. The flow bearing lubricated with grease needs to be replaced after running for more than 1500 hours, and the amount of grease should not be too much or too little, because too much or too little grease will lead to heating of the bearing, and the amount of refueling should be controlled in the volume of the bearing chamber from one half to two thirds of the volume.

　　3. For bearings lubricated with lubricating oil, the amount of oil should be added to the specified position.

　　4. lubricating oil or grease containers need to be clean, usually need to pay attention to do a good job related to sealing, pay attention to not appear dust, iron and other debris, so as not to cause damage to the bearings

　　5. motor bearings will generally use sodium-based grease, can be used for high temperature does not exceed 125 ℃, but need to pay attention to more easily dissolved in water, so it is not suitable for use as acid and alkali chemical pump bearing lubrication

　　Bearing in the dismounting time need to pay attention to the problem

　　1. The installation of the bearings need to be fed into the appropriate screw pump in the installation of the bearings need to be installed just to the correct position when to stop applying force to it to ensure that the end of the gasket can be against the seat hole or the shaft shoulder end face, not too tight nor too loose, to ensure that there will be no leakage

　　2. The combined force of the application needs to be as far as possible through the axis of the bearing, the requirement to achieve uniformity and symmetry of the application of force, through the spherical or parallel to the axis to apply force

　　3. Avoid applying force through the rolling body, which requires us to load and unload the inner ring through the shaft ring to apply force, load and unload the outer ring through the outer ring to apply force.

　　4. The size of the force should be smooth and uniform, there shall be no impact, so you need to use oil pressure or can exert a smooth tension or pressure of the tool, really have to use the hammer, you can through the sleeve and other soft rubber will not produce falling chips of the metal for buffer, knocking when attention to the force of the gentle use of copper rods or copper hammer for hammering