Non-contact seal assemblies for gearboxes

Abstract

The invention provides a non-contact seal assembly for a gear box. The non-contact seal assembly comprises a gear box body, a bearing, a wind disk, a first sealing ring, a second sealing ring and an oil baffle disc, wherein the bearing is sequentially provided with the oil baffle disc, the first sealing ring, the second sealing ring and the wind disk from the gear box body to outside; a first seal cavity is formed by the oil baffle disc, the bearing and the first sealing ring; a second seal cavity is formed by the first sealing ring, the bearing and the second sealing ring; a third seal cavity is arranged on the contact part of the second sealing ring and the bearing; the bearing is provided with an oil return groove and an oil return hole which are communicated into the gear box body; the oil return groove is communicated with the first seal cavity; the oil return hole is communicated with the second seal cavity; the third seal cavity is communicated with the oil return hole. According to the invention, the connecting position of the gear box body and the bearing is provided with the wind disk, the first sealing ring, the second sealing ring and the oil baffle disc, so that multilayer sealing, good leakage-proof effect and high using safety are achieved; the integral structure is simplified, and no magnetic or other expensive parts are used, so that low cost is achieved.

Description

technical field [0001] The invention relates to the field of shaft end sealing equipment, in particular to a non-contact sealing assembly for a gearbox. Background technique [0002] In the prior art, the non-contact sealing of the shaft end of the high-speed rotating gear box mainly adopts single sealing forms such as labyrinth seals, spiral seals, grate seals, and air pressure seals. These single sealing structures are used in high-speed rotating gear boxes. When the shaft end of the body is used, due to the dynamic instability of the gas or other reasons, the shaft head sometimes has different degrees of oil leakage, and the sealing effect is not good. Therefore, using the sealing technology in the prior art, it is necessary to adjust the matching gap many times in the actual installation process, which increases the steps of the assembly process and consumes a lot of time. [0003] With the continuous advancement of technology, technicians have improved the non-contact ...

AI Technical Summary

Problems solved by technology

This patent uses magnetic components for control, and the sealing effect is relatively good. However, the price of the magnetic components is relatively expensive, and the magnetic components are relatively easy to damage and have a short service life, resulting in high overall production costs.

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