First, the core of magnetic fluid components sealing technology is to utilize the response characteristics of nano-magnetic fluid to magnetic field. This magnetic fluid is injected into the gap of the magnetic circuit formed by high-performance magnets and the machine shoe shaft with good magnetic conductivity to form a dynamic sealing medium.
Secondly, under the action of the magnetic field, the magnetic fluid forms several liquid O-rings in the gap. These liquid O-rings can fit tightly between the rotating shaft or the stationary parts to form an effective sealing barrier. When the shaft starts to rotate, the magnetic fluid components are tightly attached to the shaft surface under the action of the magnetic field, blocking all possible leakage channels, and achieving zero gas leakage during operation and parking.
Furthermore, magnetic fluid components sealing devices have various forms and structures to adapt to different application scenarios and design requirements. For example, some magnetic fluid components sealing devices use a magnetic circuit composed of a circular permanent magnet, a pole shoe and a rotating shaft. Through the magnetic field, the magnetic fluid components are concentrated in the gap between the shaft and the top of the pole shoe to form a structure similar to an O-ring, thereby blocking the gap channel and achieving the purpose of sealing.
In addition, magnetic fluid components sealing technology also has good adaptability and reliability. Whether it is high-speed rotation or large swing, magnetic fluid components can maintain a good sealing effect. At the same time, since magnetic fluid components are dynamic seals, there is no friction between solids, so they have a long service life.
However, magnetic fluid components sealing technology is also subject to some conditions, such as evaporation, temperature rise, etc. Therefore, during use, it is necessary to be careful not to exceed the marked pressure and take appropriate cooling measures to prevent excessive temperature rise.
The sealing technology of magnetic fluid components is an efficient and reliable sealing method, which is widely used in photovoltaics, chemicals, medical treatment, semiconductors and other fields.
