The lower bearing of an Archimedes screw pump is a very important component. Its role is to keep the pump aligned and to maintain the accurate gap between screw and trough.
The lower bearing of a screw pump is a very important component. Its role is to keep the pump aligned and to maintain the accurate gap between screw and trough. Although it carries only a small portion of the load of a screw pump, it has to do its duty under harsh conditions: submerged in dirty water.
Spaans Babcock has developed during the last 50 years a large range of lower bearings; the most used types are shown below:
The traditional lower bearing is based on a non-rotating stub shaft that is rigidly mounted to the bottom of the inlet and a bronze bush sleeve bearing, mounted to the lower end of the screw pump, that is rotating around the stub shaft to ensure that eventual wear will occur evenly distributed.
A very small amount of grease is constantly pumped into the bearing by a grease pump that is installed at the top.
I would really still prefer using the metal bearings.
ReplyDeletewhite metal bearings