Purpose

The purpose of this paper is to study the pumping efficiency of oil seals with different surface textures at different speeds, and the influence of the rotation direction of triangular texture on the sealing performance was further analyzed.

Design/methodology/approach

Based on the theory of elastohydrodynamic lubrication and the pumping mechanism of rotary shaft seals, establishing a numerical model of mixed lubrication in oil seal sealing area. The model is coupled with the lip surface texture parameters and the two-dimensional average Reynolds equation considering the surface roughness.

Findings

The results show that the application of lip surface texture technology has obvious influence on the oil film thickness, friction torque and pumping rate of oil seal. The triangular texture has the most significant effect on the increase of pump suction rate. When the rotation direction of triangular texture is 315 degrees, the pumping rate of oil seal is the largest compared with the other seven directions.

Originality/value

The model has a comprehensive theoretical guidance for the design of new oil seal products, which provides a certain basis for the application of surface texture technology in the field of sealing in the future.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-06-2020-0198/

中文翻译：

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唇微凹纹油封的密封性能研究

目的

本文的目的是研究具有不同表面纹理的油封在不同速度下的泵送效率，并进一步分析了三角形纹理的旋转方向对密封性能的影响。

设计/方法/方法

基于弹性流体动力润滑理论和旋转轴密封的抽油机理，建立了油封密封区域混合润滑的数值模型。该模型与唇部表面纹理参数和考虑表面粗糙度的二维平均雷诺方程耦合。

发现

结果表明，唇面纹理技术的应用对油膜厚度，摩擦扭矩和油封抽油率有明显影响。三角形纹理对泵吸率的增加影响最大。当三角形纹理的旋转方向为315度时，与其他七个方向相比，油封的泵送率最大。

创意/价值

该模型为新型油封产品的设计提供了全面的理论指导，为今后表面纹理技术在密封领域的应用提供了一定的依据。

同行评审

本文的同行评审历史记录可在以下网址获得：https://publons.com/publon/10.1108/ILT-06-2020-0198/