Mechanical seal for kettle Manufacturer's wear amount and service life

Kettle Mechanical seal manufacturer Wear amount and service life I About service life In mechanical seals, the main wear part is the end face of the seal friction pair, because the wear amount of the seal end face is not large under normal working conditions, such as the graphite friction pair with a balance coefficient of 0.75, the wear amount per hour in water and oil is about 0.1 μ m, that is, the wear amount is about 1 mm after 10000 hours of continuous operation, It can be seen that the wear amount of friction pair generally does not affect the service life of mechanical seal. Mechanical seals can generally be used continuously for 1~2 years, and it is no problem that they can also be used for 5~10 years in some cases. The above service life premise is that the mechanical seal operates under the allowable working conditions, such as shaft movement, runout, medium particle concentration, temperature, corrosivity and other factors.

External factors affecting the service life of mechanical seal: 1. The displacement of pump shaft is large 2. The axial force is large 3. The displacement of pump shaft is large 4. The auxiliary flushing system is unreasonable 2 The leakage standard JB4127.1-1999 Technical Conditions for Mechanical Seals stipulates that: "Under the condition of reasonable model selection, correct installation and use, the service life of mechanical seal is generally not less than 1 year when the sealed medium is clean water, oil and similar medium. When the sealed medium is corrosive medium, the service life of mechanical seal is generally 6 months to 1 year. However, this is not limited when the service conditions are harsh." Sealing test, The average leakage shall not exceed 5mL/h when the outer diameter of the shaft (or shaft sleeve) is greater than 50mm, and shall not exceed 3mL/h when the outer diameter of the shaft (or shaft sleeve) is not greater than 50mm