Internal pressure type double end face gas film mechanical seal structure-

Internal pressure type double end face gas film mechanical seal structure

　2018-10-18　　

Internal pressure type double end gas film mechanical seal structure:

Figure 4-13 shows the internal pressure type Shuangpu face air film mechanical seal structure. Two sets of gas film seals are arranged in sequence, and the middle is also filled with clean isolation gas. The isolation gas is generally industrial nitrogen, whose pressure is higher than the medium pressure of the sealed chamber by about 0.3MPa, and the filtration accuracy is 1um. Because the inner seal bears the internal pressure, relying on the 'gas block' and centrifugal force, it can effectively prevent solid particles in the liquid medium from entering the sealing surface. The hydrodynamic pressure groove on the sealing surface of the inner sealing ring (or static ring) is engraved on the inner diameter of the sealing surface, while the hydrodynamic pressure groove on the sealing surface of the outer sealing static ring (or moving ring) is engraved on the outer diameter of the sealing surface. Place. This kind of gas film seal is mainly suitable for all kinds of liquid media containing solid particles. 209 mechanical seal

Figure 4-13 Internal pressure type double braided air film sealing structure

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External pressure type double end face gas film mechanical seal 　　 series spare gas film mechanical seal