Bearing thin oil lubricating device of vertical mine multistage submersible pump

Abstract

The invention provides a bearing thin oil lubricating device of a vertical mine multistage submersible pump so as to solve the problem that vertical mine multistage submersible pump bearings are insufficiently cooled and lubricated. A bearing is placed in a closed space of an optimized structure. Mechanical lubricating oil is injected into the closed space. The lubricating and cooling conditions of the bearing during operation are improved, and the limit speed of the bearing is increased. The closed space is composed of a spindle, a lower mechanical sealing seat, a lower single end face mechanical seal, a bearing block, an upper single end face mechanical seal, an upper mechanical sealing seat, an upper O-shaped sealing ring and a lower O-shaped sealing ring. The mechanical lubricating oil can be injected into the space through an oil filling port.

Description

Technical field [0001] The invention relates to a bearing component of a vertical mine submersible multistage pump, specifically a thin oil lubricated bearing component, the purpose of which is to improve the lubrication and cooling conditions of the bearing, prolong its service life, and improve the mechanical operation stability and reliability of the pump sex. The invention belongs to the technical field of manufacturing general mechanical products. Background technique [0002] As the most heavily loaded part of the entire submersible multistage pump, bearings are prone to damage. The reason for the damage of the bearing is that on the one hand, it bears too much axial force and radial force; on the other hand, because of poor cooling and lubrication conditions, the bearing runs above the limit speed for a long time, resulting in fatigue damage to the bearing. Although grease lubrication is not easy to leak, it has low applicability to rolling bearings that require hig...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the operating environment of the bearing and prolong the service life of the bearing, the thin oil lubricated bearing device of the vertical mine submersible multi-stage pump of the present invention is used to solve the problem of poor lubrication of the bearing of the vertical mine submersible multi-stage pump. In a closed space with an optimized structure, the lubrication and cooling conditions of the bearing operation are improved, and the guarantee for increasing the limit speed of the bearing is provided.

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