Cooling and lubricating device for bearing of centrifugal pump

Abstract

The invention discloses a cooling and lubricating device for a bearing of a centrifugal pump. The cooling and lubricating device for the bearing of the centrifugal pump mainly comprises a bearing boxbody, a pump shaft, a front box cover, a front bearing, a rear bearing, a rear box cover and a box body plug, wherein the pump shaft in the bearing box body is internally provided with a front bearinglubricating supercharger and a rear bearing lubricating supercharger at intervals; the front bearing lubricating supercharger and a front bearing are adjacent in distance; and the rear bearing lubricating supercharger and a rear bearing are adjacent in distance. By adoption of the structure, the cooling and lubricating device has the advantages of novel structure, good lubricating effect, remarkable cooling effect, long service life and the like.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a centrifugal pump bearing cooling and lubricating device. Background technique [0002] As we all know, the existing centrifugal pump bearing box is provided with a pump shaft, the pump shaft of the bearing box is equipped with a front bearing cover, a front bearing, a rear bearing and a rear bearing cover, and two oil slinger rings are installed on the pump shaft in the bearing box, and the bearing There is lubricating oil in the box, an oil outlet is arranged at the bottom of the box, and a valve plug is arranged on the oil outlet. When the centrifugal pump is working, the rotating pump shaft drives the oil slinger to rotate, and the lubricating oil is brought up. Throw in the air to lubricate the bearings. [0003] The industry stipulates that the maximum temperature of the centrifugal pump bearing should not exceed 71 degrees, and the user requires that the factory test shoul...

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Problems solved by technology

However, it is difficult to meet these requirements when conveying high-temperature medium, high load, continuous long-term work, and unattended work.

[0004] In order to cool the temperature of the bearing, various bearing housing cooling and lubricating devices have appeared on the market, but none of them can meet the above requirements.

[0005] Moreover, the two tapered bearings 6 used in the centrifugal pump have a larger width and greater resistance to rotation, which affects the entry of lubricating oil into the bearings. Therefore, their operating temperature is higher than that of ball bearings of the same specification, but under high load conditions tapered bearings must be used

[0006] At present, there is no good solution. Some use forced lubrication, and spray lubricating oil into the bearing box with lubricating oil under pressure through an external lubricating oil station. The effect is very good, but the investment cost is high, the floor area is large, and the maintenance cost is high.

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