CN215486776U

CN215486776U - Thrust bearing structure of underwater pump

Info

Publication number: CN215486776U
Application number: CN202120988234.7U
Authority: CN
Inventors: 刘吉国; 庞阿楠; 张富华; 庞建文
Original assignee: Tianjin Tanggu Xinhai Ship Engineering Co ltd
Current assignee: Tianjin Tanggu Xinhai Ship Engineering Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-01-11
Anticipated expiration: 2031-05-10

Abstract

The application relates to the technical field of bearings and discloses a thrust bearing structure of an underwater pump, which comprises a bearing seat barrel, wherein a thrust bearing assembly is arranged in the bearing seat barrel, the thrust bearing assembly comprises a top ring, a retainer and a bottom ring which are sequentially arranged, a rotating space is formed by enclosing the top ring, the retainer and the bottom ring, the top ring is used for being in interference fit with a rotating shaft, the bottom ring is in interference fit with the bearing seat barrel, a plurality of rollers are distributed on the periphery of the retainer, each roller is rotationally connected with the retainer, the top ring and the bottom ring are respectively in rotational fit with each roller, an oil storage cavity for containing lubricating oil is formed in the bottom ring, a plurality of communication holes are formed in the bottom ring to communicate the oil storage cavity with the rotating space, an oil absorption layer is coated on the outer surface of each roller, when the top ring rotates, each oil absorption layer is extruded by the top ring and the bottom ring so that the lubricating oil flows through the inner surface of the top ring and returns to the oil storage cavity, the lubricating oil storage device has the characteristics of capability of storing and automatically replenishing lubricating oil and convenience in operation.

Description

Thrust bearing structure of underwater pump

Technical Field

The utility model relates to the technical field of bearings, in particular to a thrust bearing structure of an underwater pump.

Background

The water pump is a device for conveying liquid or pressurizing liquid by using mechanical energy, a rotating shaft is arranged in the water pump, one end of the rotating shaft is fixedly connected with a water pump impeller, and the other end of the rotating shaft is provided with a bearing. Thrust bearing includes inner circle and outer lane, is provided with lubricating oil between inner circle and the outer lane, and lubricating oil needs the regular manual work to add, and need carry out dismouting, complex operation to the water pump when adding lubricating oil.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a thrust bearing structure of an underwater pump, which has the characteristics of capability of storing and automatically supplementing lubricating oil and convenience in operation.

In order to achieve the above purpose, the basic scheme of the utility model is as follows:

a thrust bearing structure of an underwater pump comprises a bearing seat barrel, wherein a thrust bearing assembly is arranged in the bearing seat barrel and comprises a top ring, a retainer and a bottom ring which are sequentially arranged, a rotating space is formed by enclosing the top ring, the retainer and the bottom ring, the top ring is used for being in interference fit with a rotating shaft, the bottom ring is in interference fit with the bearing seat barrel, a plurality of rollers are distributed on the periphery of the retainer, the rollers are arranged in the rotating space, each roller is rotatably connected with the retainer, the top ring and the bottom ring are respectively in rotation fit with each roller,

the oil storage chamber that is used for holding lubricating oil is seted up in the foundation ring, set up a plurality of intercommunicating pores on the foundation ring in order to communicate oil storage chamber and rotation space, the cladding has the oil absorption layer on the surface of roller, works as when the top ring rotates, each oil absorption layer of top ring and foundation ring extrusion is so that lubricating oil flows through the internal surface of top ring and gets back to the oil storage intracavity.

Furthermore, a boss used for limiting the installation position of the bottom ring is arranged in one end of the bearing seat cylinder, one end face of the bottom ring abuts against the boss, a bearing gland is arranged at the other end of the bearing seat cylinder, and the bearing gland is in clearance fit with the top ring.

Furthermore, an oil injection groove is formed in the bottom ring, the oil injection groove is communicated with the oil storage cavity, and a grease nipple used for injecting lubricating oil into the oil storage cavity is arranged on the bearing seat cylinder.

Furthermore, the roller is in a truncated cone shape, the rollers are uniformly arranged in the circumference, a first inclined plane matched with the roller in shape is formed on the surface, in contact with the roller, of the top ring, and a second inclined plane matched with the roller in shape is formed on the surface, in contact with the roller, of the bottom ring.

Further, the roller is arranged in an inclined mode, one end, with the smaller diameter, of the roller shaft is arranged on one side close to the rotating shaft, the roller is arranged in an inclined mode towards the position of the bearing sleeve along the direction from the bearing gland to the boss, and an included angle formed between the axis of the roller and the axis of the retainer is set to be 75-80 degrees.

Further, the oil storage chamber is cyclic annular evenly distributed on the foundation ring, the intercommunicating pore sets up on one side of keeping away from the bearing housing section of thick bamboo on the second inclined plane, the axis evenly distributed of foundation ring is followed to the intercommunicating pore, the quantity of intercommunicating pore sets up to six.

Compared with the prior art, the scheme has the beneficial effects that:

the lubricating oil is contained in the oil storage cavity, the oil absorption layer absorbs the lubricating oil entering the rotating space, the top ring extrudes the oil absorption layer when rotating, so that the lubricating oil in the oil absorption layer is extruded out and lubricates the surface of the roller, which is in contact with the top ring, the lubricating effect can be achieved when the amount of the lubricating oil in the rotating space is small, the extruded lubricating oil flows in the rotating space, and the heat on the roller and the top ring can be absorbed to play a role in cooling; the oil storage chamber can hold a certain amount of lubricating oil, the lubricating oil in the oil storage chamber can enter the rotating space by shaking the thrust bearing structure, the lubricating oil in the rotating space is convenient to supplement, and when the lubricating oil in the rotating space is excessive, the lubricating oil can return to the oil storage chamber through the communication hole, so that the difficulty in heat dissipation caused by excessive lubricating oil is avoided, and the service life of the thrust bearing is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic diagram of an exploded structure of an embodiment of a thrust bearing assembly;

FIG. 3 is a schematic cross-sectional view of an embodiment;

fig. 4 is a partially enlarged schematic view of a portion a of fig. 3.

Reference numerals in the drawings of the specification include:

1. a bearing mount cylinder; 11. a grease nipple; 12. a boss; 2. a bearing gland; 31. a top ring; 311. a first inclined plane; 32. a holder; 321. an inner ring; 322. an outer ring; 323. a roller; 33. a bottom ring; 331. a communicating hole; 332. an oil injection groove; 333. an oil storage chamber; 334. a second inclined plane.

Detailed Description

The utility model will be described in further detail by means of specific embodiments with reference to the accompanying drawings:

example (b):

a thrust bearing structure of an underwater pump is shown in figures 1 and 2 and comprises a bearing seat barrel 1, wherein a thrust bearing assembly is arranged in the bearing seat barrel 1 and comprises a top ring 31, a retainer 32 and a bottom ring 33 which are sequentially arranged, a rotating space is formed by enclosing the top ring 31, the retainer 32 and the bottom ring 33, the top ring 31 is used for being in interference fit with a rotating shaft, and the bottom ring 33 is in interference fit with the bearing seat barrel 1. The retainer 32 comprises an annular inner ring 321 and an annular outer ring 322, the outer ring 322 is sleeved with the inner ring 321, a plurality of connecting parts are fixedly connected between the inner ring 321 and the outer ring 322, the connecting parts play a role in fixing the inner ring 321 and the outer ring 322, a rotating shaft is arranged between every two adjacent connecting parts, each rotating shaft is uniformly distributed along the axis circumference of the inner ring 321, two ends of each rotating shaft are respectively rotatably connected with the inner ring 321 and the outer ring 322, a roller 323 is arranged on each rotating shaft, a rotating space is arranged in each roller 323, and the top ring 31 and the bottom ring 33 are respectively in rotating fit with each roller 323.

As shown in fig. 3 and 4, an oil storage chamber 333 for containing lubricating oil is formed in the bottom ring 33, a plurality of communication holes 331 are formed in the bottom ring 33 to communicate the oil storage chamber 333 with a rotating space, an oil absorption layer is coated on the outer surface of the roller 323, and when the top ring 31 rotates, the top ring 31 and the bottom ring 33 press each oil absorption layer so that the lubricating oil flows through the inner surface of the top ring 31 and returns to the oil storage chamber 333. A boss 12 for limiting the installation position of the bottom ring 33 is arranged in one end of the bearing seat cylinder 1, one end face of the bottom ring 33 is abutted against the boss 12, a bearing gland 2 is arranged at the other end of the bearing seat cylinder 1, a plurality of screws (not shown in the figure) are arranged on the bearing gland 2 and used for connecting the bearing gland 2 with the bearing seat cylinder 1, and the bearing gland 2 is in clearance fit with the top ring 31. An oil injection groove 332 is formed in the bottom ring 33, the oil injection groove 332 is communicated with the oil storage cavity 333, and a grease nipple 11 for injecting lubricating oil into the oil storage cavity 333 is arranged on the bearing seat cylinder 1. The rollers 323 are formed in a truncated cone shape, the rollers 323 are circumferentially and uniformly arranged along the axis of the cage 32, the surface of the top ring 31 contacting the rollers 323 is formed with a first inclined surface 311 adapted to the shape of the rollers 323, and the surface of the bottom ring 33 contacting the rollers 323 is formed with a second inclined surface 334 adapted to the shape of the rollers 323. The smaller end of the shaft diameter of the roller 323 is arranged at one side close to the rotating shaft, the roller 323 is obliquely arranged towards the position of the bearing sleeve along the direction from the bearing gland 2 to the boss 12, and the included angle between the axis of the roller 323 and the axis of the retainer 32 is set to be 75-80 degrees. The oil storage cavities 333 are uniformly distributed on the bottom ring 33 in an annular shape, the communication holes 331 are formed in one side, away from the bearing seat barrel 1, of the second inclined surface 334, the communication holes 331 are uniformly distributed along the axis of the bottom ring 33, and the number of the communication holes 331 is six.

The specific implementation mode of the scheme is as follows:

as shown in fig. 3, when the grease nipple 11 is used to inject grease into the grease chamber 333, the grease enters the rotation space through the communication hole 331, and when the grease is injected once, the level of the grease is flush with the communication hole 331. The oil absorption layers on the rollers 323 absorb the lubricating oil entering the rotating space, when the top ring 31 rotates along with the rotating shaft, the top ring 31 and the rollers 323 are driven to rotate along the rotating shaft of the rollers 323, the top ring 31 and the bottom ring 33 extrude the oil absorption layers, the lubricating oil in the oil absorption layers flows through the first inclined surface 311 on the top ring 31 after being extruded, the lubricating effect is achieved, part of heat is taken away by the extruded lubricating oil in the flowing process, the auxiliary heat dissipation effect is achieved, then the part of lubricating oil is absorbed by the oil absorption layers again, and the process is repeated. The oil storage cavity 333 can store a certain amount of lubricating oil, when the amount of the lubricating oil in the rotating space is too small, the lubricating oil can enter the rotating space by shaking the bearing seat barrel 1, and when the amount of the lubricating oil in the rotating space is higher than the communication hole 331, the lubricating oil can automatically return to the oil storage cavity 333 through the communication hole 331, so that the effect of automatically adjusting the oil amount is achieved, and the heat dissipation effect of the thrust bearing assembly is prevented from being influenced.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an underwater pump thrust bearing structure, includes bearing housing section of thick bamboo (1), its characterized in that: the bearing seat barrel is characterized in that a thrust bearing assembly is arranged in the bearing seat barrel (1), the thrust bearing assembly comprises a top ring (31), a retainer (32) and a bottom ring (33) which are sequentially arranged, a rotating space is formed by enclosing the top ring (31), the retainer (32) and the bottom ring (33), the top ring (31) is used for being in interference fit with a rotating shaft, the bottom ring (33) is in interference fit with the bearing seat barrel (1), a plurality of rollers (323) are distributed on the periphery of the retainer (32), the rollers (323) are arranged in the rotating space, each roller (323) is rotatably connected with the retainer (32), and the top ring (31) and the bottom ring (33) are respectively in rotation fit with each roller (323),

set up oil storage chamber (333) that is used for holding lubricating oil in bottom ring (33), set up a plurality of intercommunicating pores (331) on bottom ring (33) and in order to communicate oil storage chamber (333) and rotation space, the cladding has the oil absorption layer on the surface of roller (323), works as when top ring (31) rotate, top ring (31) and bottom ring (33) extrude each oil absorption layer so that lubricating oil flows through the internal surface of top ring (31) and gets back to in oil storage chamber (333).

2. A thrust bearing structure for an underwater pump according to claim 1, characterized in that: the bearing seat barrel is characterized in that a boss (12) used for limiting the installation position of a bottom ring (33) is arranged in one end of the bearing seat barrel (1), one end face of the bottom ring (33) is abutted against the boss (12), a bearing gland (2) is arranged at the other end of the bearing seat barrel (1), and the bearing gland (2) is in clearance fit with a top ring (31).

3. A thrust bearing structure for an underwater pump according to claim 1, characterized in that: an oil filling groove (332) is formed in the bottom ring (33), the oil filling groove (332) is communicated with the oil storage cavity (333), and a grease nozzle (11) used for injecting lubricating oil into the oil storage cavity (333) is arranged on the bearing seat cylinder (1).

4. A thrust bearing structure for an underwater pump according to claim 2, characterized in that: the roller (323) is in a truncated cone shape, the rollers (323) are uniformly arranged in the circumference, a first inclined surface (311) matched with the roller (323) in shape is formed on the surface, in contact with the roller (323), of the top ring (31), and a second inclined surface (334) matched with the roller (323) in shape is formed on the surface, in contact with the roller (323), of the bottom ring (33).

5. The thrust bearing structure of an underwater pump according to claim 4, characterized in that: the smaller one end of roller (323) shaft diameter sets up in the one side that is close to the pivot, roller (323) along bearing gland (2) to boss (12) direction to the bearing sleeve position slope setting, the contained angle between the axis of roller (323) and the axis of holder (32) sets up to 75 between 80.

6. The thrust bearing structure of an underwater pump according to claim 4, characterized in that: oil storage chamber (333) are cyclic annular evenly distributed on foundation ring (33), intercommunicating pore (331) set up in second inclined plane (334) keep away from the one side of bearing housing section of thick bamboo (1), axis evenly distributed along foundation ring (33) intercommunicating pore (331), the quantity of intercommunicating pore (331) sets up to six.