Oil film mechanical seal for fan-

Oil film mechanical seal for fan

　2018-09-20　　

Oil film mechanical seal for fan:

(1) Working principle

Oil film seal is a non-contact liquid film mechanical seal. This seal type is a new technology that has developed rapidly in the field of mechanical seal technology in recent years. The (upstream) isolation seal oil leaking to the low pressure side (downstream) is forcibly delivered to the seal end face, resulting in a complete oil film formed between the seal end faces, realizing non-contact operation of the two seal end faces, and greatly improving the lubrication between the seal end faces situation. The surface groove of the dynamic pressure groove of the fluid dynamic pressure groove is mainly logarithmic spiral, and the sealing oil is micro-lubricated, so it is usually called the oil film spiral groove seal. 1523 mechanical seal

There are various end face structures of oil film spiral groove mechanical seals, and the working principle is explained by the double row spiral groove with single end face (Figure 4-6).

Figure 4-6 Schematic diagram of double row spiral groove with single end face

(2) Sealing arrangement

The arrangement of the oil film spiral groove mechanical seal for the fan mainly includes: single end face and double end face seal, which will not be repeated here.　　957.html,

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