Rotating shaft sealing structure

Abstract

The invention provides a rotating shaft sealing structure comprising a rotating shaft. A first sealing device is arranged at the connection of the rotating shaft and workpiece and comprises a metal seal ring A, a fluorine rubber ring and a metal locking ring; the metal seal ring A is circular, coats the gap of the connection of the rotating shaft and workpiece and is filled with the fluorine rubber ring; the structure further comprises a second sealing device; the second sealing device is fixedly connected to the first sealing device on the rotating shaft axially in the same row through a threaded hole; the metal locking ring is fixedly connected to the second sealing device through the threaded hole formed in the second sealing device. The structure adopts double seals, the fluorine rubber ring with lips is arranged additionally inside, the two lips can be assembled oppositely during assembly; a grease ring is arranged in the middle and is filled with vacuum grease through a grease feed port, the fluorine rubber ring with the lips can be lubricated constantly and is prevented from dry grinding, the two end sealing effect is fine through the bidirectional lip seal, and leakage is eliminated.

Description

technical field

[0001] The invention relates to a rotary shaft seal structure, which belongs to the field of shaft seal manufacture. Background technique

[0002] Sealed means tightly closed. The words come from Jin Gehong's "Baopuzi Jindan": "Yin Zidan's method: use mica water and pills, seal them in the Jinhua Pond, come out in one year, take a knife, and you will be five hundred years old if you take a catty." Sealing can be done. It is divided into two categories: static seal and dynamic seal. Sealing is a component or measure that prevents fluid or solid particles from leaking from adjacent joint surfaces and prevents external impurities such as dust and moisture from intruding into the interior of the machine. Static seal refers to the seal used to seal letters and wills that tightly closes the airtight container.

[0003] The sealing material should meet the requirements of sealing function. Due to the different media to be sealed and the different working conditi...

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