SU1302027A1 - System for lubricating pump bearings - Google Patents

Abstract

The invention relates to hydraulic machine building and allows increasing durability and reducing pump volume losses. And by stabilizing the flow rate of the working fluid in the lubrication line at various shaft rotation speeds. In line 2 of the lubricant, a regulating choke (RD) is installed, made in the form of a cylindrical chamber 5, the axis of which is perpendicular to the shaft axis 4, with a spring-loaded slide valve 6. The latter is installed between the shaft axis 4 and the profiled windows 7 and 8. by means of which RD communicated with line 2 grease. As the pump speed increases and the pressure behind the impeller increases, the degree of throttling of the fluid in the taxiway increases. By profiling the windows 7 and 8 there is a constant pressure of fluid in front of the bearings 3, at which the lubrication conditions are optimal. 1 il. with S (L with about GchE About th

Description

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The invention relates to hydraulic engineering, and more specifically to the construction / evil of lubrication of bearings of a centrifugal pump.

The purpose of the invention is to follow the age and decrease the pump volume losses by stabilizing the flow rate of the working fluid in the lubrication line at different shaft rotation speeds.

The drawing schematically shows a lubrication system.

The pump bearing lubrication system contains a working medium cleaning unit 1 and a bearing lubrication line 2, performed in shaft 4 of the pump and connecting the cleaning unit 1 with bearings 3.

The system is equipped with a regulating choke, filled in the form of a cylindrical chamber 5 with a spring-loaded spool 6 installed in the lubrication line 2, the throttle communicating with the last profiled windows 7 and 8, the axis of the cylindrical chamber 5 perpendicular to the axis of the shaft 4, and the spool 6 is installed between the profiled Windows 7 and 8 and the shaft axis 4.

The system works as follows.

When the shaft 4 rotates, the pressurized fluid enters the cleaning unit 1, where it is cleaned of mechanical impurities, and through the lubrication line 2 and the control throttle enters the bearings 3. The position of the spool 6 relative to windows 7 and 8 determines the degree of throttling of the fluid flow and its pressure bearings; The position of the spool 6 relative to the shaft 4 is often determined

Compiled by Yu.Nikitchenko Editor A.Sabo Tehred L.Oleinik Proofreader G. Reshetnik

Order 1200/35 Circulation 575 Subscription

VNIIPI USSR State Committee

on cases; 1m inventions and discoveries 113035, Mo.skva, Zh-35, Raushsk nab., d.4 / 5

Production and printing company, Uzhgorod, st. Proatena, 4

1302027

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This rotational movement, and the movement of the spool in chamber 5 associated with a change in the rotational speed, causes a change in the overlap of windows 7 and 8, a change in the degree of throttling of the fluid in the control throttle and a change in the pressure of the fluid supplied to the bearings 3j, namely with increasing pump rotation frequency and growth The pressure behind the impeller increases the degree of choke fluid in the control throttle.

By profiling windows 7 and 8, it is possible to provide constant fluid pressure in front of the bearings 3, at which the lubrication conditions are optimal; bearing capacity and lack of erosive wear are required.

Claims (1)

Invention Formula A pump bearing lubrication system that contains a working fluid cleaning unit and a lubrication line and bearings, which is complete in the pump shaft and communicates a cleaning unit with bearings, characterized in that its purpose is to improve pump life by reducing the flow rate of the working medium. in the lubrication line at various speeds of rotation of the shaft, the system is equipped with a regulating choke, made in the form of a cylindrical chamber with a spring-loaded slide valve installed in the lubrication line, the choke communicating with the latter pegylated windows cylindrical chamber axis is perpendicular to the shaft axis, and the spool is mounted between the profiled windows and the shaft axis.