A complete solution to the failure causes of various sealing methods
The device or measure to prevent the leakage of the working medium from the pump or to prevent the intrusion of external impurities or air into the pump is called sealing, and the sealed medium is generally liquid, gas or dust. The sealing device of the pump is mainly divided into two categories: one is static seal, and the other is dynamic seal. Static seals usually have gasket seals, O-ring seals, thread seals and other types. Dynamic seals mainly include soft packing seals, oil seal seals, labyrinth seals, screw seals, dynamic seals and mechanical seals. There are two main reasons for the leakage: First, there is a gap on the sealing surface. Second, there is a pressure difference on both sides of the sealing part. Eliminating or reducing any one factor can prevent or reduce leakage and achieve the purpose of sealing. The design pressure and operating pressure of the pump are objective and cannot be reduced, so the solution of the pump seal is to eliminate or reduce the gap bet...