[Q&A Question 138] 2017.05.18
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This post was last edited by 955559 on 2017-7-21 at 22:54. [Q&A Question 138] May 18, 2017: What are the parts of a centrifugal pump that require lubrication? The reference answers can be seen after responding; points will be awarded for identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) The main lubrication points of centrifugal pumps are sliding bearings and rolling bearings; some gear couplings also require lubrication. Scoring criteria: 2 Wealth points for incorrect attempts; 3–8 points for *incomplete* answers. 10 Wealth points for correct answers, provided with detailed explanations; 15–20 Wealth points for correct answers with additional *insufficient* details. Please score according to these criteria. Note: If there are editing records after answering, only points will be awarded to those who participated. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters that have no relation to the answer are all considered malicious spamming. Points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updates have started) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have started) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html
The bearings inside the bearing housing, and the areas with gear couplings
Such as bearings, gears, toothed couplings, and sealed end faces
Depending on the structure of the heart pump, the number of lubrication points and the methods of lubrication vary as well. Lubrication points are generally found in areas where there is relative motion, such as bearings, gears, toothed couplings, and sealed surfaces. Bearings with lower transmission loads and heat generation generally use grease lubrication, whereas those with higher loads use oil lubrication ； Gear parts are generally lubricated with oil ； Toothed couplings are generally lubricated with grease ； The mechanical seal face is generally lubricated using process medium or an external cooling flush fluid ； The sealing surface of a packing seal is generally lubricated by the lubricating material carried within the packing.
Bearings, gears, toothed couplings, and sealed end faces
Bearings, packing, gear couplings
For the bearing part, lubricating grease is also applied inside the motor.
Answer: The main lubrication points of centrifugal pumps are sliding bearings and rolling bearings; some gear couplings also require lubrication.