Labyrinth type oil seal structure with holes for high speed axis

A labyrinth seal and labyrinth technology, applied in the direction of engine seals, toothed components, belts/chains/gears, etc., can solve the problems of lubricating oil leakage, decreased sealing effect of lubricating oil, environmental pollution, etc., to achieve Prevent external leakage and weaken the effect of adsorption retardation

Inactive Publication Date: 2008-08-27
无锡金露通用机械有限公司
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Problems solved by technology

[0002] In the prior art, the high-speed output shaft in the speed-up gearbox of a high-speed fan is generally lubricated by tilting pad bearing pressure oil, and the shaft end usually adopts a serrated labyrinth oil seal structure. In the case of a large oil supply, this The sealing effect of the structure on the lubricating oil is obviously reduced. In actual use, the phenomenon of lubricating oil leakage occurs from time to time, causing environmental pollution

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  • Labyrinth type oil seal structure with holes for high speed axis

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Embodiment Construction

[0009] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0010] Such as figure 1 As shown: it mainly includes an output shaft 1, a labyrinth oil seal 2, a tilting pad bearing 3, and a gear box 4. The output shaft 1 is installed in the gearbox body 4, driven by the gear pair, the output shaft 1 rotates at high speed under the support of the tilting pad bearing 3, and the pressure lubricating oil between the shaft and the bearing enters from the oil supply system through the oil inlet 5 , when the amount of oil is large, the lubricating oil is easy to leak from the output shaft under pressure. The effect of labyrinth oil seal 2 is exactly to prevent this external leakage. The labyrinth oil seal 2 is provided with several grooves, and forms a labyrinth seal structure with the output shaft 1 . The labyrinth seal structure is mainly composed of the interstage space 6 and the interdental space 7, and the upper ...

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Abstract

The invention relates to an oil sealing structure for an output end of a main axis in a speed-increasing gear box of a high-speed fan, in particular to the oil sealing structure which is used to prevent the lubricating oil on the output end of the main axis from leaking out, belonging to the mechanical structure technical field, wherein a labyrinth type oil sealing piece is provided with a plurality of grooves, forming a labyrinth type oil sealing structure together with the output axis; the structure comprises interstage space and intertooth space and is characterized in that upper parts and lower parts of the interstage space and the intertooth space are provided with pressure equalizing holes(communicated with the atmosphere) and oil return holes(return to an oil tank) respectively. When a great amount of oil needs to be supplied, in the invention, enough intertooth space and pressure equalizing holes on the upper parts can weaken the 'adsorbing retardation' phenomenon caused by the viscosity of the lubricating oil, which makes the lubricating oil quickly pass through oil return holes on the lower parts and return to the oil tank, therefore the leaking-out of the lubricating oil is effectively avoided.

Description

technical field [0001] The invention relates to an oil sealing structure at the output end of a main shaft in a speed-increasing gear box for a high-speed fan, specifically for preventing external leakage of lubricating oil at the output end of the main shaft, and belongs to the technical field of mechanical structures. Background technique [0002] In the prior art, the high-speed output shaft in the speed-up gearbox of a high-speed fan is generally lubricated by tilting pad bearing pressure oil, and the shaft end usually adopts a serrated labyrinth oil seal structure. In the case of a large oil supply, this The sealing effect of the structure on the lubricating oil is obviously reduced. In actual use, the phenomenon of lubricating oil leakage occurs from time to time, causing environmental pollution. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages, thereby providing a labyrinth oil seal structure with holes f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/447F16H57/02F16H57/029
Inventor 金炳庆
Owner 无锡金露通用机械有限公司
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