The picture below shows the internal structure of the bearing chamber of the vertical multi-stage pump?
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The lubricating oil level in the bearing compartment is under the bearing, as shown in the oval in the picture. Please tell me.: What is the principle of this lubrication?
My guess is that when the shaft rotates, the oil is thrown up and gets on the bearing, or there may be a small part or pattern on the shaft sleeve below the oil tank level.
There is an oil sling ring under the bearing and a spiral groove on the outside, which can bring oil into the bearing when it rotates with the shaft.
You can do an experiment, put a cup of engine oil in it, then put a cylindrical iron on the hand drill, insert it vertically halfway and then turn it, you will find that the engine oil will crawl up on its own.
This structure is actually an oblique angle below the bearing sleeve, which is submerged in lubricating oil. When rotating, it can generate lift. The lubricating oil rises along the sleeve. There are vertical holes on the sleeve, and the oil enters from the hole and enters the bearing from top to bottom for lubrication. ；