As an important shaft sealing device, mechanical seal has many significant advantages. The following is a summary of its main advantages:
Good sealing performance:
The sealing effect of the mechanical seal is very reliable and can maintain a stable sealing state for a long time. In a long service period, its leakage volume is much lower than other sealing methods, such as packing seals, usually only 1/10 to 1/100 of packing seals. This low leakage characteristic plays an important role in preventing media leakage, protecting the environment, and ensuring production safety.
Long working life:
Properly designed, manufactured and used mechanical seals have a long operating life. Under normal circumstances, mechanical seals can operate continuously for 1 to 2 years or more, and generally do not require maintenance during the service life. This not only reduces maintenance costs, but also greatly reduces workers’ labor intensity.
Small friction loss:
The friction power loss of mechanical seals is relatively small, usually only 5% to 50% of that of packing seals. This advantage helps reduce equipment energy consumption and improve equipment operating efficiency.
Small shaft or bushing wear:
Due to the design characteristics of the mechanical seal, there is very little or even no wear on the shaft or sleeve during operation. This helps extend the service life of the shaft and bushings and reduces downtime due to wear.
Long maintenance cycle:
The maintenance cycle of mechanical seals is relatively long, mainly due to its automatic compensation function. When wear occurs on the end face, the mechanical seal can automatically compensate to maintain a stable sealing effect. Therefore, in most cases, mechanical seals do not require regular maintenance.
Good vibration resistance:
The mechanical seal is insensitive to the vibration and deflection of the rotating shaft and the deflection of the shaft to the seal cavity, and can operate stably under harsh working conditions. This advantage makes mechanical seals widely used in equipment with large vibrations.
Wide range of use:
Mechanical seals have a wide range of applications and can be used for sealing at low temperatures, high temperatures, vacuum, high pressure, different rotational speeds, and various corrosive media and media containing abrasive particles. This feature makes mechanical seals widely used in various industrial fields.
To sum up, mechanical seals are widely used in shaft seals of rotating fluid machinery due to their excellent sealing performance, long working life, low friction loss, small sleeve wear, long maintenance cycle, good vibration resistance and wide range of use. occupies an important position in the device.
