RU139979U1 - DEVICE FOR LUBRICATION OF A SUPPORT-BEARING BEARING UNIT OF A PUMP UNIT - Google Patents

Abstract

1. A device for lubricating the support-thrust bearing assembly of a pump assembly, comprising a housing for lubricating fluid, coaxially arranged vertically oriented shaft, supported by a sleeve and thrust bearings on a housing made with a cover located on it with an opposite side of the crankcase, in the housing channels are made for communicating the inner cavity of the lid with said crankcase with the possibility of supplying a lubricating fluid to the cavity above the thrust bearings, moreover, on -axial shaft mounted sleeve, which is connected on the one hand with the crankcase flange by means of a sealing element and on the other side is connected to the housing through a slit uplotneniya.2. The device according to claim 1, characterized in that it is made with a lubricant level indicator mounted on the housing below the thrust bearings.

Description

The utility model relates to the field of engineering, in particular to the lubrication systems of bearing bearings, and can be used to supply oil to the bearings of pumping units for pumping oil.

Various devices are widely known from the prior art for supplying lubricant to bearing bearings in the form of a grease or in the form of a liquid lubricant from a common oil system. Patents of the Russian Federation No. 1064720 (1995) or No. 99835 (2010) may be referred to known solutions.

The utility model “Vertical Centrifugal Pump” (RF patent No. 106682, 2011) is also known, in which a pump is designed for supplying oil and oil products in trunk pipelines and for technological transfer at pumping station facilities. A two-case pump contains one impeller of a two-way inlet (single-stage) with upstream axial wheels with a possible subsequent arrangement of one (two-stage) or two (three-stage) wheels of a one-way inlet with guide vanes. The shaft supports the upper thrust roller bearing and the lower plain bearing. The removal of the impeller of the first stage is made in the form of a guide apparatus and transfer channels. The pump outlet is located in the pressure housing in the form of a guide apparatus and an annular outlet of cylindrical or spherical shape. The axial force unloading device is made in the form of a rear end impeller seal and an unloading pipe connected to the pump inlet pipe. The mechanical seal is provided with an auxiliary seal and a device for hydrocyclone cleaning of the pumped medium or double. EFFECT: increased efficiency, reliability and durability of the pump. The known solution cannot be applied in the claimed device in view of its design features. The utility model formula is composed without division into restrictive and distinctive parts.

The problem the utility model aims to solve is to increase the service life of the support and thrust bearing assembly of a pumping unit for pumping oil running on grease. The technical result consists in ensuring the supply to the working area of the thrust bearing of the lubricant, in particular liquid oil, by converting the grease device of the thrust bearing into a fluid lubrication device.

To solve the problem and achieve a technical result, a device for lubricating a thrust bearing assembly of a pump assembly, comprising a housing for a lubricating fluid, coaxially arranged vertically oriented shaft, supported by a sleeve and thrust bearings on a housing made with a cover located on it with on the opposite side of the crankcase, in the housing there are channels for communicating the inner cavity of the lid with said crankcase with the possibility of supplying lubricating fluid to the floor spine over thrust bearings, and on the crankcase section a sleeve is installed coaxially to the shaft, which is connected on one side to the crankcase flange by means of a sealing element and, on the other hand, connected to the housing by means of a gap seal.

It is advisable that the device would be made with a lubricant level indicator mounted on the housing below the thrust bearings.

The use of a lubricating fluid significantly improves the operating conditions of the bearing due to the fact that the bearing is lubricated by spraying a lubricating fluid, such as oil, bearings are not constantly in the oil or grease. The oil circulates inside the bearing housing. The process of changing the lubricant is also simplified, there is no need to disassemble the bearing housing.

The indicated features of the utility model are essential and interconnected causally with the formation of a set of essential features sufficient to achieve a technical result.

Figure 1 shows the design of the device.

Figure 2 - design of the device, taken as the basis for the improvement of the lubrication system of the bearing assembly, the numbering is also presented there, different from the numbering in figure 1 and not reflected in the description text.

The utility model is illustrated by a specific implementation example, which, however, is not the only possible, but clearly demonstrates the possibility of achieving this set of essential features of a given technical result.

Presented in figure 1, the elements of the device have the following positions:

1 - bearing housing;

2 - crankcase for lubricating fluid - oil sump;

3 - level indicator lubricating fluid - oil;

4 - cover;

5 - sleeve;

6 - a flange;

7 - sleeve;

8 - a bronze sleeve;

9 - a sleeve for forming a gap seal;

10 - thrust bearing;

11 - round nut;

12 - oil drain plug;

13 - a sealing ring;

14 - a sealing lining;

15 - squeeze screw;

16 - distance washer;

17 - upper flange;

18 - a habitat;

19 - bottom;

20 - lower flange;

21 - a seal in the form of a sealing ring;

22 hairpin;

23 - a nut;

24-shaft;

25 - channels;

26 - a cavity in the lid;

27 - stiffeners located in the tank.

According to a utility model, a device for lubricating a thrust bearing assembly of a pumping unit for pumping oil comprises a lubricating oil housing 2 coaxially arranged with a vertically oriented shaft 24, supported by a sleeve 7 and thrust bearings 10 on a housing 1. The housing 1 is made with a cover 4 located on it with the opposite side of the crankcase 2. Channels 25 are provided in the housing for communicating the inner cavity of the lid and the space above the bearings 10 with said housing 2 with the possibility of supplying a lubricant to the space above the bearings 10. The sleeve 7 is connected to the housing 1 and the housing 2 by means of a sleeve 9 connected to the flange of the housing 2 by means of a sealing element, and on the other hand is connected to the housing by means of a gap seal.

In one embodiment, the device is provided with a level indicator 3 of the lubricating fluid mounted on the housing 1 below the thrust bearings 10, and the sleeve 9 is made of bronze (figure 1).

During the average repair of the retaining pump unit, in particular, the NISH 2500-80 brand, the assembly of the support and thrust bearing assembly is improved. The thrust bearing previously running on grease, shown in figure 2, is being finalized for the possibility of using a lubricating fluid (figure 1).

To enable the use of a lubricating fluid, in particular oil, for the lubrication of thrust bearings, the following elements are slightly improved on the known design of the bearing assembly:

1. - housing 1 (figure 1) of a known design is being finalized for the installation of the oil sump and the circulation of oil for supplying to its lubrication and cooling of bearings;

2. - the crankcase 2 (Fig. 1) is made of a welded structure consisting of a flange 17, a shell 18, a bottom 19, a flange 20, stiffeners 27, while the crankcase 2 is installed in the lower part of the thrust bearing 10 on the seating surface. The seal between the housing 1 and the crankcase 2 is carried out by installing a paronite gasket 14 (figure 1).

3. - a sleeve 9 is installed in the crankcase 2 coaxially to the shaft, which is connected on one side to the flange 20 of the crankcase 2 by means of a sealing element 21, and on the other hand is connected to the housing 1 by means of a gap seal, while the sleeve 9 is connected to the crankcase by means of a pressure flange 6 and studs with nuts 22 and 23 (figure 2). The sleeve 9 can be made bronze and is a sealing element of the gap seal to prevent oil leakage from the crankcase, its height is above the maximum allowable oil level in the crankcase.

4. - made sleeve 7 (figure 1) with screw threads (right and left) for oil supply from the crankcase 2 (figure 1) through the oil channels 25 to the rolling bearings 10. The clearance between the sleeve 7 and the sleeve 9 should be within 0.25-0.33 mm;

5. - sleeve 7 with rolling bearings 10 is set using the remote ring 16 (figure 1);

6. - to control the level of lubricating fluid, an oil level indicator 3 is made (Fig. 1);

7. - in the lower part of the crankcase there is a drain plug 12 (figure 1).

Thus, the use of a lubricating fluid significantly improves the operating conditions of the bearings 10 due to the fact that the bearing is lubricated by spraying the lubricating fluid in the form of liquid oil, the bearings are not constantly in the oil. During operation of the pumping unit, liquid oil is constantly circulating inside the housing of the thrust bearing. This simplifies the process of replacing the lubricating fluid, there is no need to disassemble the bearing housing.

Claims (2)

1. A device for lubricating the support-thrust bearing assembly of a pump assembly, comprising a housing for lubricating fluid, coaxially arranged vertically oriented shaft, supported by a sleeve and thrust bearings on a housing made with a cover located on it with an opposite side of the crankcase, in the housing channels are made for communicating the inner cavity of the lid with said crankcase with the possibility of supplying a lubricating fluid to the cavity above the thrust bearings, moreover, on -axial shaft mounted sleeve, which is connected on the one hand with the crankcase flange by means of a sealing element and on the other side is connected to the housing through a slit seal. 2. The device according to claim 1, characterized in that it is made with a lubricant level indicator mounted on the housing below the thrust bearings.

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