Similarities and differences between shielded pumps and centrifugal pumps!
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This post was last edited by —Lantian— on 2011-2-12 at 12:32: Differences and similarities between diaphragm pumps and centrifugal pumps!
The differences between shielded pumps and centrifugal pumps are as follows: 1. In a shielded pump, the pump and the motor are integrated together； In a centrifugal pump, the pump and the motor are connected together by a coupling. 2. The bearings of shielded pumps are lubricated by the medium being transported ； The bearings of centrifugal pumps are lubricated by externally applied lubricating oil (grease). 3. The bearing material of the shielded pump is graphite ； The bearings of centrifugal pumps are made of metal. 4. The bearings of the shielded pump are sliding bearings ； Centrifugal pumps use rolling bearings. 5. Shielded pumps are leak-free pumps ； Centrifugal pumps are sealed by mechanical seals or packing. 6. Different requirements are placed on the medium being transported. The medium transported by a shielded pump must be particle-free, have a relatively low viscosity, and its temperature must not exceed 350 degrees℃ ； Centrifugal pumps can handle a wider range of media. The similarities between shielded pumps and centrifugal pumps are: 1. Both use centrifugal force to transport the medium. Friends who are familiar with the topic can fill in the gaps!
This post was last edited and replied to by nianlike on 2011-2-13 08:46. Reply to 2# gaodi913: I’ve learned it! However, I have some doubts regarding the fact that \"the bearing material of the shielded pump is graphite\"!
Reply to 3# nianlike: As far as I can see, the bearings in all the centrifugal pumps I’ve encountered are made of graphite. Graphite has excellent self-lubricating properties!