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<p>What factors will affect the service life of <a href="https://www.lepuseal.com/products-1" target="_blank">mechanical seals</a>?</p><p><br></p><p>The main corrosive substance in the desulfurization circulating pump is chloride ions. Due to the strong reducibility of chloride ions, it has corrosive effect on the medium of the mechanical seal material, causing surface corrosion of the mechanical seal. The sealing material medium is limestone and gypsum slurry, the solid content (mass percentage) is about 35%; the temperature is controlled within 70℃; the pressure is less than 0.8MPA; the pH value is between 4-8; the chloride ion content is less than 0.04%. Among them, chloride ions can penetrate <a href="https://www.lepuseal.com/products-1" rel="noopener noreferrer" target="_blank">mechanical seals</a> when they are severely corroded. What is more serious is that dissimilar metals work together in the medium, causing electrochemical corrosion. This leads to inadequate fixing of the ring.</p><p><br></p><p>If the sealing surface is in friction for a long time, or the cooling water supply is quickly stopped, or impurities enter the sealing surface, it will initially cause small vertical cracks on the ring surface. This makes the friction ring wear and causes the sealing surface leakage to increase rapidly. The frictional heat caused by the increase in friction will exceed the allowable temperature of the rubber product, resulting in rapid aging or cracking of the rubber product or loss of rubber elasticity. Gradually lead to seal failure. The seal failure caused by this reason is mainly due to excessive friction. Pay attention to maintenance during use, reduce friction, and increase ventilation and heat dissipation. Keep the sealing surface at room temperature.</p><p><br></p><p>If the material has poor friction resistance, large friction coefficient, high end-to-surface specific pressure, or particles on the sealing surface, it will cause serious wear on the sealing surface and lead to seal failure.</p><p><br></p><p>Mechanical seal is a relatively tight equipment. The length of its service life is closely related to its design, installation, and use. In addition, regular maintenance and maintenance during use is also very important. According to investigation and analysis. The main reasons for the failure of the mechanical seal of the desulfurization circulating pump are attributed to four types: (1) operational problems such as interruption of the flushing fluid; (2) unreasonable mechanical installation and design; (3) poor fluid circuit such as insufficient negative pressure, etc.; (4) ) The selection of the sealing material is inappropriate.</p>
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