What is the function of the shielding sleeve in a shielded pump, and what does it shield?
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What is the function of the shielding sleeve in a shielded pump, and what does it shield?
It shields the process medium, ensuring that it is isolated from the atmosphere
Isolate the medium from the outside world, changing from a dynamic seal to a static seal
Does it have the function of separating the rotor from the stator?
It should be understood as something located between the stator and the rotor, enclosing the medium and the rotor
“A shielded pump is a sealless pump; both the pump and the drive motor are enclosed within a pressure vessel filled with the medium to be pumped. This pressure vessel has only static seals, and a set of wires is used to generate a rotating magnetic field that drives the rotor. This design eliminates the rotating shaft sealing mechanism found in conventional centrifugal pumps, thereby achieving complete leaklessness. A shielded pump combines the pump and the motor together, with the rotor of the motor and the impeller of the pump being mounted on the same shaft
Serves as a physical isolation medium; materials such as stainless steel are related to the medium
This post was last edited by foam_ZPTK on 2019-2-22 21:01 to isolate the medium from the stator part of the motor and external elements
There is also a shielding sleeve on the rotor
It might be due to the translation! The term for a shielded pump in English is “canned motor pump”. The word “canned” means sealed; since the pump and the motor in a shielded pump are coaxial, the working medium is used as a lubricant for the sliding bearings. This working fluid must enter the motor chamber. To separate this fluid from the electrical components of the motor, isolation sleeves – also known as shield sleeves – are installed on the inside of the stator and on the outside of the rotor. It’s said that the person who first translated “CANNED PUMP” into Chinese may have had an electrical engineering background, which is why the word “shield” was chosen to describe “CANNED”. I’m not sure if this explanation is clear enough:):)