Bearing lubricating and cooling device for pitot tube pump

Abstract

The invention discloses a bearing lubricating and cooling device for a pitot tube pump. The bearing lubricating and cooling device comprises a bearing seat, a gland, a drive-end bearing sleeve seat and a non-drive-end bearing sleeve seat, wherein a cooling inlet and a cooling outlet are formed on the bottom side of the bearing seat, a cooling pipe is arranged, the cooling pipe is arranged in lubricating oil in a bearing box, axial and radial flow paths of the cooling pipe from the cooling inlet to the cooling outlet are the flowing direction from high to low, the cooling outlet is located at the lowest position of the flow paths, the cooling inlet and the cooling outlet are designed to be high in inlet and low in outlet, the cooling inlet and the cooling outlet incline towards the outlet direction of the gland integrally during installation to form gravity difference. A connecting pipe is opened during condensate drainage in winter, the action of gravity is used for direct condensate drainage of cooling water, so that the water is prevented from staying in the pipe to be frozen.

Description

technical field [0001] The invention belongs to the technical field of fluid pumps, and in particular relates to a bearing lubricating and cooling device for a pitot tube pump. Background technique [0002] Pitot tube pump is composed of main parts such as pump body, diversion assembly, mechanical seal assembly, pitot tube, shaft, impeller, rotating shell, bearing box, etc. The rotating parts composed of shaft, rotating shell and impeller are connected with the bearing box through bearings. When the pitot tube pump is working, due to the high-speed rotation of the pump shaft, a large amount of heat will be generated inside it, and the inside of the pitot tube pump will also be worn, which is easy to cause damage to the pitot tube pump and affect its service life. [0003] The current pitot tube pump usually adopts the following two methods in terms of lubrication and cooling: [0004] One is to open the view port above the bearing seat, and the inlet and outlet of the cooli...

AI Technical Summary

Problems solved by technology

[0004] One is to open a viewing port above the bearing seat, and the inlet and outlet of the cooling pipe are located above the bearing seat. On the one hand, the cooling efficiency is not high, and on the other hand, it is not conducive to the cold climate in the north. The cooling water cannot be drained, and the cooling pipe swells due to water freezing Cracks, causing mechanical failure and bearing damage

[0005] Second, the oil throwing ring is used. However, when the pitot tube pump transports high-temperature medium or the pitot tube pump is heavy-duty and prone to vibration, the oil throwing ring is easy to fall off and fail, the lubricating oil cannot be cooled well, and the reliability is poor

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