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Analysis of the advantages and disadvantages of various materials for magnetic pump isolation sleeves
浏览次数: Time: 2019-11-12 17:27
As everyone knows, there is an isolation sleeve inside the magnetic pump, which has almost become a signature feature of the magnetic pump, just like a shielded pump inside the shielded pump. Today we will take a look at what types of magnetic pump's isolation sleeves , Which materials,
As everyone knows, there is an isolation sleeve inside the magnetic pump, which has almost become a signature feature of the magnetic pump, just like a shielded pump inside the shielded pump. Today we will take a look at what types of magnetic pump's isolation sleeves , Which materials have different characteristics.
The flow-through parts of the fluorine-lined magnetic pump are all corrosion-resistant materials such as F46. Therefore, the isolation sleeve must also be corrosion-resistant, but everyone knows that the strength of F46 is not high and it is impossible to support the entire inner rotor component to rotate in the pump. Need to add a layer of "reinforcement sleeve", usually, manufacturers will add a layer of stainless steel to it, then the problem comes, stainless steel is a metal, but also a conductor, so when the external magnetic and internal magnetic transmission torque, it will form A rotating magnetic field, therefore, the stainless steel reinforcement sleeve between the two performs the movement of cutting magnetic field lines in the magnetic field. It is well known that cutting magnetic field lines will generate electric current, and the electric current will be expressed in the form of heat. The reinforced sleeve will heat up quickly, and the heat is likely to burn out and deform the plastic sleeve, leading to pump leakage.
So, what kind of material can be non-conductive and have sufficient strength? The green ring magnetic pump is made of imported PEEK. The material can withstand a working pressure of 3MPa under the thickness of 2mm, which can be said to be the king in the reinforcement sleeve.
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