CN117628379A - Thin oil lubrication bearing body based on oil thrower - Google Patents
Thin oil lubrication bearing body based on oil thrower Download PDFInfo
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- CN117628379A CN117628379A CN202311646886.2A CN202311646886A CN117628379A CN 117628379 A CN117628379 A CN 117628379A CN 202311646886 A CN202311646886 A CN 202311646886A CN 117628379 A CN117628379 A CN 117628379A
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- oil
- bearing
- inlet hole
- sleeve
- oil inlet
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- 238000005461 lubrication Methods 0.000 title claims abstract description 27
- 239000003921 oil Substances 0.000 claims abstract description 215
- 239000000428 dust Substances 0.000 claims abstract description 24
- 239000010687 lubricating oil Substances 0.000 claims abstract description 23
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000005484 gravity Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The invention provides a thin oil lubrication bearing body based on an oil slinger, which is used for solving the technical problems that the temperature of a bearing is higher and even the bearing burns out due to insufficient lubrication of a bearing in an inner bearing chamber by oil splashed by an oil slinger in the existing thin oil lubrication bearing body, and the gap size is inconvenient to control during installation caused by axial sealing between a dust cover and a bearing gland. According to the thin oil lubrication bearing body, the traditional oil slinger is replaced by the oil slinger, the inner side surface of the outer ring sleeve of the oil slinger is designed to be an inclined surface, meanwhile, the top of the bearing body is provided with the inner side oil inlet hole, the inner side oil inlet hole is obliquely arranged at the uppermost part of the joint of the end sleeve and the connecting piece and is communicated with the inner side bearing chamber, and the oil slinger throws lubricating oil to a region between the outer side oil inlet hole and the inner side oil inlet through the inclined surface, so that the lubricating effect of the inner and outer bearings is ensured by entering the inner side bearing chamber and the outer side bearing chamber through the outer side oil inlet hole and the inner side oil inlet hole.
Description
Technical Field
The invention relates to a thin oil lubrication bearing body, in particular to a thin oil lubrication bearing body based on an oil thrower disc.
Background
At present, a thin oil lubrication bearing body of a chemical pump generally adopts an oil slinger structure, and the oil slinger is mainly used for stirring an oil pool, so that the temperature of the oil pool is uniform. For light-load or single-row bearings, the thin oil lubrication bearing body with the structure can basically meet the heat dissipation requirement of the bearing, but for heavy-load bearings, the conventional thin oil lubrication bearing body is difficult to meet the heat dissipation requirement of the bearing due to the fact that the impact and the load are relatively large, the temperature of a conveying medium is high and dust exists. When the bearing body is in heavy load, the structure of the double-row angular contact ball bearing is generally adopted, oil splashed by the oil slinger cannot sufficiently lubricate the bearing of the inner bearing chamber, so that the temperature of the bearing is higher, even the condition of burning the bearing occurs, and the reliability and the safety of the chemical pump are affected.
The original bearing body dust cover is disc-shaped, is fixed on the pump shaft and rotates at high speed, and is designed with an axial labyrinth seal with the bearing gland so as to play a role in dust prevention. However, the gap size is inconvenient to control when the dust cover is installed, the dust cover and the bearing cover are worn due to too small gap, dust can enter the bearing body due to too large gap, and lubricating oil is polluted.
Disclosure of Invention
The invention aims to solve the technical problems that the temperature of a bearing is high and even the bearing burns out due to insufficient lubrication of the bearing in an inner bearing chamber by oil splashed by an oil slinger in the existing thin oil lubrication bearing body and the gap size is inconvenient to control during installation due to axial sealing between a dust cover and a bearing gland.
In order to achieve the above object, the technical solution provided by the present invention is as follows:
a thin oil lubrication bearing body based on an oil thrower comprises a pump shaft, a bearing, a shaft sleeve, a bearing body, an oil return groove, a bearing gland and an end cover; the bearing and the shaft sleeve are sleeved on the pump shaft, and the shaft sleeve is used for axially positioning the bearing; the bearing body comprises an end sleeve sleeved on the outer side of the bearing outer ring, an outer guard ring coaxially arranged on the outer side of the end sleeve and connected with the end cover, and a connecting piece for connecting the end sleeve and the outer guard ring; an inner bearing chamber and an outer bearing chamber are respectively arranged on two sides of the bearing; the oil return groove is arranged at the lowest part of the bearing body; the bearing gland is fixed at one end of the bearing body and the inner bearing chamber, which is close to the pump body, and is used for fixing the position of the bearing; the end cover is arranged at one end of the bearing body, which is far away from the pump body, and is used for sealing the bearing cavity; it is characterized in that the device also comprises an oil thrower; the oil thrower comprises an inner ring sleeve sleeved on the outer end of the pump shaft, a flange-shaped disc body perpendicular to the inner ring sleeve, and an outer ring sleeve arranged on the outer edge of the disc body and extending towards the inner end of the pump shaft; an outer side oil inlet hole and an inner side oil inlet hole are formed in the top of the bearing body; the outer oil inlet is vertically arranged at the uppermost part of the end sleeve and is communicated with the outer bearing chamber, and the inner oil inlet is obliquely arranged at the uppermost part of the joint of the end sleeve and the connecting piece and is communicated with the inner bearing chamber;
the inner side surface of the outer ring sleeve of the oil thrower is an inclined surface and is used for receiving lubricating oil in the oil return groove and throwing the lubricating oil to an area between the outer side oil inlet hole and the inner side oil inlet hole through centrifugal force, so that the lubricating oil enters the outer side oil inlet hole and the inner side oil inlet hole under the action of gravity.
Further, the device also comprises a dust cover arranged on the bearing cover and a dust-proof boss arranged at one end of the shaft sleeve; a dust-proof ring positioned at the outer side of the dust-proof boss is arranged on the dust-proof cover;
a radial dustproof gap is formed between the inner side surface of the dustproof ring and the outer side surface of the dustproof boss;
and a dynamic seal is formed between the inner annular surface of the dust cover and the outer side surface of the shaft sleeve.
Further, an oil receiving plane is arranged at the uppermost part of the end sleeve;
the upper part of the outer oil inlet hole is opened on an oil receiving plane; the lowest end of the upper opening of the inner side oil inlet hole is flush with the oil receiving plane.
Further, oil return holes are respectively formed in two sides of the lower portion of the bearing body.
Further, the bearing is a double-row bearing.
Further, an included angle theta between the inner side wall of the outer ring sleeve and the inner ring sleeve is smaller than 10 degrees and larger than 5 degrees.
Further, an included angle θ=arctan (H/L) +1.5° between the inner side wall of the outer ring sleeve and the inner ring sleeve, L represents a horizontal distance from the oil outlet of the oil thrower to the oil inlet, and H represents a height from the oil inlet to the oil receiving plane.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with the traditional thin oil lubrication bearing body designed into the oil slinger, the thin oil lubrication bearing body based on the oil slinger provided by the invention has the advantages that the traditional oil slinger is replaced by an oil slinger structure, the inner side surface of the outer ring sleeve of the oil slinger is designed into an inclined surface, meanwhile, the top of the bearing body is provided with the conventional outer side oil inlet hole, the inner side oil inlet hole is obliquely arranged at the uppermost part of the joint of the end sleeve and the connecting piece and is communicated with the inner side bearing chamber, the oil slinger throws lubricating oil to the area between the outer side oil inlet hole and the inner side oil inlet hole through the inclined surface, and then enters the inner side bearing chamber and the outer side bearing chamber through the outer side oil inlet hole and the inner side oil inlet hole, so that on one hand, the dynamic balance of lubricating oil in the inner bearing chamber and the outer bearing chamber is ensured, the bearing temperature is effectively reduced, the pump can bear larger load, the capacity of conveying high-temperature medium of the pump is adapted, on the other hand, the operation reliability is high, and the failure rate of the bearing is reduced, and the lubricating oil can be widely applied to various bearing bodies.
2. According to the thin oil lubrication bearing body based on the oil thrower disc, the axial sealing mode between the traditional dustproof cover and the bearing gland is changed into the radial sealing structure, the dustproof boss is arranged at one end of the shaft sleeve, the dustproof ring positioned at the outer side of the dustproof boss is arranged on the dustproof cover, a radial dustproof gap is formed between the inner side surface of the dustproof ring and the outer side surface of the dustproof boss, and dynamic sealing is formed between the inner side surface of the dustproof cover and the outer side surface of the shaft sleeve.
3. According to the thin oil lubrication bearing body based on the oil thrower, the oil receiving plane is arranged at the uppermost part of the bearing sleeve, the upper opening of the outer oil inlet is flush with the oil receiving plane, and the lowest end of the upper opening of the inner oil inlet of the oil receiving plane can be matched with the oil thrower, so that lubricating oil thrown onto the oil receiving plane by the oil thrower smoothly enters the outer oil inlet and the inner oil inlet.
4. According to the thin oil lubrication bearing body based on the oil thrower, the oil return holes are respectively formed in the two sides below the bearing body, and the oil return holes are matched with the oil return grooves, so that the backflow of lubricating oil is further ensured.
5. According to the thin oil lubrication bearing body based on the oil thrower, the included angle theta between the inner side wall of the outer annular sleeve and the inner annular sleeve is designed to be theta=arctan (H/L) +1.5 degrees, the oil thrower can throw a part of lubricating oil into the inner side oil inlet hole directly, and the other part of lubricating oil is thrown onto an oil receiving plane between the outer side oil inlet hole and the inner side oil inlet hole and then enters the outer side oil inlet hole and the inner side oil inlet hole respectively through the oil receiving plane, so that the problem that lubricating oil in an inner side bearing chamber is less is solved, and the lubrication effect of a bearing in the inner side bearing chamber is ensured.
Drawings
FIG. 1 is a schematic illustration of a configuration of an embodiment of a thin oil lubricated bearing body based on an oil slinger in accordance with the present invention;
FIG. 2 is a cross-sectional view of a bearing body of an embodiment of a thin oil lubricated bearing body based on an oil slinger in accordance with the present invention;
FIG. 3 is a schematic view of the structure of a bearing body in an embodiment of a thin oil lubricated bearing body based on an oil slinger in accordance with the present invention;
FIG. 4 is a schematic illustration of the configuration of a fluid slinger in an embodiment of a fluid lubricated bearing body based on a fluid slinger in accordance with the present invention;
FIG. 5 is a schematic view of the dust cap of an embodiment of a thin oil lubricated bearing body based on an oil slinger of the present invention.
Specific reference numerals are as follows:
1-a pump shaft; 2-bearing; 3-shaft sleeve; 4-bearing body, 41-end sleeve, 42-connecting piece, 43-outer retainer; 5-end caps; 6-an oil thrower, 61-an inner ring sleeve, 62-a disc body and 63-an outer ring sleeve; 7-an inboard bearing chamber; 8-an outside oil inlet hole; 9-an inner side oil inlet hole; 10-oil return grooves and 101-oil return holes; 11-bearing gland; 12-dust cap, 121-dust ring; 13-dustproof bosses; 14-an outboard bearing chamber; 15-an oil receiving plane.
Detailed Description
To further clarify the advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
As shown in fig. 1, a thin oil lubrication bearing body based on an oil slinger comprises a pump shaft 1, a bearing 2, a shaft sleeve 3, a bearing body 4, the oil slinger 6, an oil return groove 10, a bearing gland 11 and an end cover 5. The bearing 2 may be any bearing suitable for heavy load environments, in this embodiment a double row bearing. The bearing 2 and the shaft sleeve 3 are both sleeved on the pump shaft 1, and the shaft sleeve 3 is used for axially positioning the bearing 2. The bearing body 4 includes an end cap 41 fitted over the outer periphery of the bearing 2, an outer retainer 43 coaxially provided on the outer periphery of the end cap 41 and connected to the end cap 5, and a connecting member 42 connecting the end cap 41 and the outer retainer 43. The side of the bearing 2 close to the pump body is provided with an inner bearing chamber 7 and the side thereof remote from the pump body is provided with an outer bearing chamber 14. The bearing cover 11 is fixed to one end of the bearing body 4 and the inner bearing chamber 7 near the pump body for fixing the position of the bearing 2. The oil return groove 10 is arranged at the lowest part of the bearing body 4, and oil return holes 101 are respectively arranged at two sides below the bearing body 4 in the embodiment and are used for realizing the return flow of lubricating oil together with the oil return groove 10. The end cover 5 is arranged at one end of the bearing body 4 far away from the pump body and is used for sealing the bearing cavity.
The core of the invention is that the oil slinger 6 replaces the traditional oil slinger structure, and the oil slinger 6 not only has the function of a raw oil slinger, but also can allow lubricating oil to enter the inner bearing chamber 7, so that the inner bearing is fully lubricated. Specifically, the oil slinger 6 includes an inner ring 61 fitted over the outer end of the pump shaft 1, a flange-like disk 62 perpendicular to the inner ring 61, and an outer ring 63 provided on the outer periphery of the disk 62 and extending toward the inner end of the pump shaft 1. An outer oil inlet hole 8 and an inner oil inlet hole 9 are formed in the top of the bearing body 4; the outer oil inlet hole 8 is vertically arranged at the uppermost part of the end sleeve 41 and is communicated with the outer bearing chamber 14; the inner oil inlet hole 9 is obliquely arranged at the uppermost part of the joint of the end sleeve 41 and the connecting piece 42 and is communicated with the inner bearing chamber 7.
The inner side surface of the outer ring sleeve 63 of the oil slinger 6 is an inclined surface, namely an included angle theta is designed between the inner side wall of the outer ring sleeve 63 and the inner ring sleeve 61, and the included angle theta is usually designed to be smaller than 10 degrees and larger than 5 degrees. Meanwhile, the uppermost part of the end sleeve 41 is provided with an oil receiving plane 15, the upper part of the outer oil inlet hole 8 is opened on the oil receiving plane 15, and the lowest end of the upper opening of the inner oil inlet hole 9 is flush with the oil receiving plane 15. Due to the included angle theta, the oil thrower 6 can throw lubricating oil to the oil receiving plane 15 between the outer oil inlet 8 and the inner oil inlet 9, and then the lubricating oil enters the outer oil inlet 8 and the inner oil inlet 9 through the oil receiving plane 15.
In general, since the outer bearing chamber 14 is closer to the oil slinger 6, more lubrication oil enters the outer bearing chamber 14 than the inner bearing chamber 7, and in order to ensure the lubrication effect of the bearings in the inner bearing chamber 7, it is preferable that the angle θ=arctan (H/L) +1.5° between the inner wall of the outer race 63 and the inner race 61 is set so that the oil slinger 6 can throw a part of the lubrication oil directly into the inner oil intake hole 9, and another part of the lubrication oil onto the oil level 15 between the outer oil intake hole 8 and the inner oil intake hole 9, and respectively enter the outer oil intake hole 8 and the inner oil intake hole 9 through the oil receiving level 15. Wherein L represents the horizontal distance from the oil outlet of the oil thrower 6 to the oil inlet 9, and H represents the height from the oil inlet 9 to the oil receiving plane.
During operation, the oil thrower 6 is fixed on the pump shaft 1 to run at a high speed, lubricating oil in the oil return groove 10 and the oil return hole 101 enters the oil thrower 6 and is thrown into the inner oil inlet hole 9 and the oil receiving plane 15 by centrifugal force during high-speed rotation of the oil thrower 6, and the lubricating oil thrown onto the oil receiving plane 15 enters the outer oil inlet hole 8 and the inner oil inlet hole 9 respectively under the action of gravity and then enters the inner bearing chamber 7 and the outer bearing chamber 14 to play a role of lubricating a bearing. At the same time, the lubricating oil in the inner bearing chamber 7 and the outer bearing chamber 14 flows back into the oil slinger 6 through the oil return groove 10 and the oil return hole 101 for recycling.
In addition, in order to prevent dust particles in the environment from entering the bearing body 4, the dust-proof structure of the present invention adopts radial sealing. Specifically, the bearing gland 11 is provided with the dust cover 12, one end of the shaft sleeve 3 is provided with the dust boss 13, the dust cover 12 is provided with the dust ring 121 positioned at the outer side of the dust boss 13, a radial dust-proof gap is formed between the inner side surface of the dust ring 121 and the outer side surface of the dust boss 13, and dynamic seal is formed between the inner side annular surface of the dust cover 12 and the outer side surface of the shaft sleeve 3. The radial dustproof gap is easy to control in size, simple to install and free from sealing failure caused by deviation of a sealing gap due to installation problems.
The foregoing description is only for the purpose of illustrating the technical solution of the present invention, but not for the purpose of limiting the same, and it will be apparent to those of ordinary skill in the art that modifications may be made to the specific technical solution described in the foregoing embodiments, or equivalents may be substituted for parts of the technical features thereof, without departing from the spirit of the technical solution of the present invention.
Claims (7)
1. A thin oil lubrication bearing body based on an oil thrower comprises a bearing (2), a shaft sleeve (3), a bearing body (4), an oil return groove (10), a bearing gland (11) and an end cover (5); the bearing (2) and the shaft sleeve (3) are sleeved on the pump shaft (1), and the shaft sleeve (3) is used for axially positioning the bearing (2); the bearing body (4) comprises an end sleeve (41) sleeved on the outer side of the outer ring of the bearing (2), an outer guard ring (43) coaxially arranged on the outer side of the end sleeve (41) and connected with the end cover (5), and a connecting piece (42) for connecting the end sleeve (41) and the outer guard ring (43); both sides of the bearing (2) are respectively provided with an inner bearing chamber (7) and an outer bearing chamber (14); the oil return groove (10) is arranged at the lowest part of the bearing body (4); the bearing gland (11) is fixed at one end of the bearing body (4) and the inner bearing chamber (7) close to the pump body and is used for fixing the position of the bearing (2); the end cover (5) is arranged at one end of the bearing body (4) far away from the pump body and is used for sealing the bearing cavity;
the method is characterized in that:
also comprises an oil thrower disc (6); the oil thrower (6) comprises an inner ring sleeve (61) sleeved on the outer end of the pump shaft (1), a flange-shaped disc body (62) perpendicular to the inner ring sleeve (61), and an outer ring sleeve (63) arranged on the outer edge of the disc body (62) and extending towards the inner end of the pump shaft (1); an outer side oil inlet hole (8) and an inner side oil inlet hole (9) are formed in the top of the bearing body (4); the outer oil inlet hole (8) is vertically arranged at the uppermost part of the end sleeve (41) and is communicated with the outer bearing chamber (14), and the inner oil inlet hole (9) is obliquely arranged at the uppermost part of the joint of the end sleeve (41) and the connecting piece (42) and is communicated with the inner bearing chamber (7);
the inner side surface of an outer ring sleeve (63) of the oil thrower (6) is an inclined surface and is used for receiving lubricating oil in an oil return groove (10) and throwing the lubricating oil to an area between an outer side oil inlet hole (8) and an inner side oil inlet hole (9) through centrifugal force, so that the lubricating oil enters the outer side oil inlet hole (8) and the inner side oil inlet hole (9) under the action of gravity.
2. A thin oil lubricated bearing body based on an oil slinger according to claim 1, wherein:
the device also comprises a dust cover (12) arranged on the bearing gland (11) and a dust-proof boss (13) arranged at one end of the shaft sleeve (3); a dust-proof ring (121) positioned outside the dust-proof boss (13) is arranged on the dust-proof cover (12);
a radial dustproof gap is formed between the inner side surface of the dustproof ring (121) and the outer side surface of the dustproof boss (13);
dynamic seal is formed between the inner side ring surface of the dust cover (12) and the outer side surface of the shaft sleeve (3).
3. A dilute oil lubricated bearing body based on an oil slinger according to claim 1 or 2, wherein:
an oil receiving plane (15) is arranged at the uppermost part of the end sleeve (41);
the upper part of the outer oil inlet hole (8) is opened on an oil receiving plane (15); the lowest end of the upper opening of the inner side oil inlet hole (9) is flush with the oil receiving plane (15).
4. A thin oil lubricated bearing body based on a oil slinger according to claim 3, wherein:
oil return holes (101) are respectively formed in two sides of the lower portion of the bearing body (4).
5. The oil slinger-based thin oil lubricated bearing body according to claim 4, wherein:
the bearing (2) is a double-row bearing.
6. A thin oil lubricated bearing based on a oil slinger according to claim 5, wherein: the included angle theta between the inner side wall of the outer ring sleeve (63) and the inner ring sleeve (61) is smaller than 10 degrees and larger than 5 degrees.
7. A thin oil lubricated bearing based on a oil slinger according to claim 5, wherein:
the included angle theta = arctan (H/L) +1.5 DEG between the inner side wall of the outer ring sleeve (63) and the inner ring sleeve (61), L represents the horizontal distance from the oil outlet of the oil thrower (6) to the oil inlet (9), and H represents the height from the oil inlet (9) to the oil receiving plane (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311646886.2A CN117628379A (en) | 2023-12-04 | 2023-12-04 | Thin oil lubrication bearing body based on oil thrower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311646886.2A CN117628379A (en) | 2023-12-04 | 2023-12-04 | Thin oil lubrication bearing body based on oil thrower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117628379A true CN117628379A (en) | 2024-03-01 |
Family
ID=90033547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311646886.2A Pending CN117628379A (en) | 2023-12-04 | 2023-12-04 | Thin oil lubrication bearing body based on oil thrower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117628379A (en) |
-
2023
- 2023-12-04 CN CN202311646886.2A patent/CN117628379A/en active Pending
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