Non-contact zero-leakage sealing ring and sealing device thereof
A sealing device and sealing ring technology, applied in the direction of engine sealing, transmission parts, engine components, etc., can solve the problems such as the average service life of the seal is less than 6 months, the leakage of lubricating oil is increased, and it is difficult to meet the use requirements.
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[0012] figure 1 Shown is the basic structure of a non-contact and zero-leakage single-rotation sealing ring of the present invention. A fluid dynamic pressure groove 3 lower than the end plane is arranged on the sealing end surface 2 of the sealing ring 1 . The fluid dynamic pressure groove 3 is arranged in the radially inner part of the sealing end surface that can communicate with the atmosphere, and the direction from the radially inner side to the radially outer side on the sealing end surface is a single-rotation direction opposite to the rotation direction of the sealing ring. groove. The specific form of the single-rotation groove can be designed according to the current conventional method according to the actual use needs. Wherein, the two ends of its hydrodynamic pressure tank 3 are divided as figure 1 In addition to the non-penetrating form that is respectively located within the inner and outer peripheral edges of the sealing end face as shown, a form in which t...
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