CN219317607U - Annular seal of rolling bearing - Google Patents
Annular seal of rolling bearing Download PDFInfo
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- CN219317607U CN219317607U CN202320893112.9U CN202320893112U CN219317607U CN 219317607 U CN219317607 U CN 219317607U CN 202320893112 U CN202320893112 U CN 202320893112U CN 219317607 U CN219317607 U CN 219317607U
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- assembly groove
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Abstract
The utility model aims to provide an annular seal of a rolling bearing, which comprises an end cover and a bearing arranged on the end cover, wherein a distance sleeve is sleeved on the end cover, an assembly groove is formed on the top surface of a protruding part in an annular manner, a sealing ring is in clearance fit in the assembly groove, the top of the sealing ring is abutted against the edge of the bearing cover, a lower sealing structure formed by matching with the sealing ring is arranged at the bottom of the assembly groove, and an upper sealing structure formed by matching with the edge of the bearing cover is arranged at the top of the assembly groove. The utility model relates to the technical field of grinding machines, which can greatly reduce the occurrence of internal oil leakage and greatly reduce external dust and particulate matters from entering a bearing; the disassembly and the maintenance are convenient; the time between the replacement of the vulnerable parts is reduced, and the maintenance efficiency is improved; the end cover, the distance sleeve, the bearing and the seal are assembled into an integrated structure, and when the equipment is thermally expanded or contracted to cause axial displacement, the seal can not be invalid.
Description
Technical Field
The utility model relates to the technical field of a mill (specifically referred to as a ball mill or a rod mill), in particular to an annular seal of a rolling bearing.
Background
In the past, the main bearings of the conventional ball mill and rod mill in China are two types, namely a rolling bearing and a sliding bearing, and in general, the sliding bearing is sealed by adopting an annular sealing structure, and the rolling bearing is sealed by adopting felt sealing or labyrinth sealing generally and cannot adopt annular sealing.
The hollow shaft and the top sleeve of the ball mill or the rod mill are in rotary motion during working, and the problems are that:
when the felt sealing mode of the rolling bearing is poor in sealing effect and easy to leak oil, the felt is worn very fast, dust on the working site of the mill is large, so that the dust often enters the bearing cavity from the worn part, and the bearing is heated or damaged;
when the rolling bearing adopts a labyrinth sealing mode, the outer ring of the labyrinth needs to rotate along with the hollow shaft, so that gaps are reserved in the labyrinth to prevent friction, and dust can enter the bearing cavity from the gaps at the moment to cause heating or damage of the bearing;
in addition, at the end and operation of the mill, the labyrinth is worn out because the axial displacement of the labyrinth is caused by thermal expansion and contraction of the equipment.
Therefore, how to achieve a good sealing effect after the ball mill or rod mill rolling bearing seal uses an annular seal is a problem that needs to be solved at present.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the annular seal of the rolling bearing, and solves the problem how to achieve good sealing effect after the annular seal is used for the rolling bearing of the existing ball mill or rod mill.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the annular seal of the rolling bearing comprises an end cover and a bearing arranged on the end cover, wherein a distance sleeve is sleeved on the end cover, and the distance sleeve can be extruded and abutted on the bearing by a bushing fixedly arranged at the end part of the end cover;
a bearing cover is arranged above the bearing, a circumferential protruding part is formed on the distance sleeve, and the protruding part is connected with the edge of the bearing cover in a matching way;
an assembly groove is formed on the top surface of the protruding part in the circumferential direction, a sealing ring is in clearance fit in the assembly groove, and the top of the sealing ring is abutted against the edge of the bearing cover;
the bottom of the assembly groove is provided with a lower sealing structure matched with the sealing ring, and the top of the assembly groove is provided with an upper sealing structure matched with the edge of the bearing cover.
Preferably, the lower sealing structure comprises a cavity formed at the bottom of the assembly groove and capable of containing grease;
wherein the grease fills the cavity to seal the bottom of the seal ring.
Preferably, the lower sealing structure further comprises a positioning edge formed on the inner wall of the bottom of the assembly groove, and the bottom surface of the sealing ring abuts against the positioning edge to form the cavity when the sealing ring is assembled in the assembly groove.
Preferably, the cavity is a beam slot, and the positioning edge is formed by the beam slot and the contact point of the assembly slot.
Preferably, the beam mouth groove is U-shaped in a cross section state.
Preferably, a gap is reserved between the bottom of the edge of the bearing cover and the protruding part, the abutting end of the sealing ring and the bearing cover is highlighted at the gap, an oiling channel capable of injecting lubricating grease into the cavity is formed in the sealing ring, and the entering end of the oiling channel is exposed at the gap.
Preferably, the upper sealing structure comprises a sealing groove formed at the top of the sealing ring, an O-shaped ring is arranged in the sealing groove, and the O-shaped ring is abutted against the edge of the bearing cover.
Advantageous effects
The annular seal of the rolling bearing provided by the utility model has the following effects:
1. the sealing ring arranged in the annular sealing way can greatly reduce the occurrence of internal oil leakage through the design of the upper sealing structure and the lower sealing structure, and greatly reduce external dust and particulate matters from entering the bearing.
2. The bushing is directly arranged on the end cover through the stud and the nut, the fixed distance sleeve and the bearing are extruded and fixed, and the nut and the stud are directly loosened and removed during disassembly and assembly, so that the disassembly and maintenance are convenient; the time between the replacement of the vulnerable parts is reduced, and the maintenance efficiency is improved.
3. The end cover, the distance sleeve, the bearing and the seal are assembled into an integrated structure, and when the equipment is thermally expanded or contracted to cause axial displacement, the seal can not be invalid.
Drawings
FIG. 1 is a schematic diagram of an end cap assembly structure of the present utility model;
fig. 2 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.
Description of the symbols in the drawings
1. The device comprises an end cover, 2, a distance sleeve, 3, a sealing ring, 4, a bearing cover, 5, an assembly groove, 6, an oiling channel, 7, an O-shaped ring, 8, a bearing, 9 and a bushing.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Various modifications can be made to the embodiments as long as the effects of the present utility model can be exerted.
The components in the present case are sequentially connected by a person skilled in the art, and specific connection and operation sequence should be referred to the following working principle, and the detailed connection means thereof are known in the art, and the following working principle and process are mainly described.
The annular seal of the rolling bearing of the present embodiment will be described with reference to fig. 1-2.
The annular seal of the rolling bearing is provided with an end cover 1 and a bearing 8 arranged on the end cover 1, a distance sleeve 2 is sleeved on the end cover 1, and the distance sleeve 2 can be extruded and abutted on the bearing 8 by a bushing 9 fixedly arranged at the end part of the end cover 1; the distance sleeve 2 is tightly fixed on the inner ring of the bearing 8, the bushing 9 is fixed with the end cover 1 by using studs, nuts and washers, the distance sleeve 2 is extruded between the bearing 8 and the bushing 9, the end cover 1, the bushing 9, the distance sleeve 2 and the bearing 8 are fixed into a whole, and the two parts are rotated together when the equipment runs.
A bearing cover 4 is arranged above the bearing 8, a circumferential protruding part is formed on the distance sleeve 2, and the protruding part is connected with the edge of the bearing cover 4 in a matching way;
an assembly groove 5 is formed on the top surface of the protruding part in the circumferential direction, a sealing ring 3 is in clearance fit in the assembly groove, and the top of the sealing ring 3 is abutted against the edge of the bearing cover 4; the sealing ring 3 is mounted in the mounting groove 5 to form an annular seal against the bearing 8. When the device thermally expands or contracts to cause axial displacement, the sealing failure is not caused.
The bottom of the assembly groove 5 is provided with a lower sealing structure matched with the sealing ring 3, and the top of the assembly groove 5 is provided with an upper sealing structure matched with the edge of the bearing cover 4. Through the design of the upper sealing structure and the lower sealing structure at the sealing ring 3, the oil leakage phenomenon can be greatly reduced, and dust and particles can be greatly reduced from entering the bearing.
The lower sealing structure comprises a cavity which is formed at the bottom of the assembly groove 5 and can contain lubricating grease;
wherein the grease fills the cavity to seal the bottom of the sealing ring 3.
The lower sealing structure further comprises a positioning edge formed on the inner wall of the bottom of the assembly groove 5, and the bottom surface of the sealing ring 3 abuts against the positioning edge to form a cavity when the sealing ring 3 is assembled into the assembly groove 5.
The cavity is a beam slot, and the joint of the beam slot and the assembly slot 5 forms a positioning edge.
The beam slot is U-shaped in cross section.
Through the design of forming the U-shaped below mounting groove 5, can the joint make the cavity form on the location limit when making sealing ring 3 installation, form annular seal structure after filling up the lubricating grease.
A gap is reserved between the bottom of the edge of the bearing cover 4 and the bulge, the abutting end of the sealing ring 3 and the bearing cover 4 is highlighted at the gap, an oiling channel 6 capable of injecting lubricating grease into the cavity is communicated in the sealing ring 3, and the entering end of the oiling channel 6 is exposed at the gap.
Specifically, after the seal ring 3 is installed in the fitting groove 5, the upper portion of the seal ring 3 protrudes from the fitting groove 5 and can be exposed at the gap, and in this way, grease can be conveniently injected into the cavity through the grease injection passage 6. At the same time, the sealing ring 3 can also close the gap to ensure the use effect.
The upper sealing structure comprises a sealing groove formed at the top of the sealing ring 3, and an O-shaped ring 7,O type ring 7 is arranged in the sealing groove and is abutted against the edge of the bearing cover 4. The O-shaped ring 7 is arranged in a sealing groove at the top of the sealing ring 3, and the sealing ring 3 is fully sealed by matching with a lower sealing structure.
Although embodiments of the present utility model and their advantages have been described in detail, it must be understood that various modifications and alterations of the utility model may be devised by those skilled in the art without departing from the spirit and scope of the present utility model as defined by the appended claims. Furthermore, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. Those of skill in the art will appreciate from the disclosure of the present utility model that a process, machine, manufacture, composition of matter, means, methods, or steps, whether presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the embodiments described herein may be utilized according to the present utility model. Accordingly, the claims appended hereto are intended to cover within their scope such processes, apparatuses, manufacturers, compositions, means, methods, or steps of a substance.
Claims (7)
1. An annular seal for a rolling bearing comprising an end cap (1) and a bearing (8) mounted on the end cap (1), characterized in that: a distance sleeve (2) is sleeved on the end cover (1), and the distance sleeve (2) can be pressed against the bearing (8) by a bushing (9) fixedly arranged at the end part of the end cover (1);
a bearing cover (4) is arranged above the bearing (8), a circumferential protruding part is formed on the distance sleeve (2), and the protruding part is connected with the edge of the bearing cover (4) in a matching way;
an assembly groove (5) is formed on the top surface of the protruding part in the circumferential direction, a sealing ring (3) is in clearance fit in the assembly groove, and the top of the sealing ring (3) is abutted against the edge of the bearing cover (4);
the bottom of the assembly groove (5) is provided with a lower sealing structure matched with the sealing ring (3), and the top of the assembly groove (5) is provided with an upper sealing structure matched with the edge of the bearing cover (4).
2. An annular seal for a rolling bearing in accordance with claim 1, wherein: the lower sealing structure comprises a cavity which is formed at the bottom of the assembly groove (5) and can contain lubricating grease;
wherein the grease fills the cavity to seal the bottom of the sealing ring (3).
3. An annular seal for a rolling bearing in accordance with claim 2, wherein: the lower sealing structure further comprises a positioning edge formed on the inner wall of the bottom of the assembly groove (5), and the bottom surface of the sealing ring (3) is abutted against the positioning edge to form the cavity when the sealing ring (3) is assembled in the assembly groove (5).
4. A ring seal for a rolling bearing in accordance with claim 3, wherein: the cavity is a beam slot, and the locating edge is formed by the beam slot and the contact point of the assembly slot (5).
5. An annular seal for a rolling bearing in accordance with claim 4 wherein: the beam mouth groove is U-shaped in a cross section state.
6. An annular seal for a rolling bearing in accordance with claim 5 wherein: a gap is reserved between the bottom of the edge of the bearing cover (4) and the protruding portion, the abutting end of the sealing ring (3) and the bearing cover (4) is highlighted at the gap, an oiling channel (6) capable of injecting lubricating grease into the cavity is formed in the sealing ring (3), and the entering end of the oiling channel (6) is exposed at the gap.
7. An annular seal for a rolling bearing in accordance with claim 1, wherein: the upper sealing structure comprises a sealing groove formed at the top of the sealing ring (3), an O-shaped ring (7) is arranged in the sealing groove, and the O-shaped ring (7) is abutted to the edge of the bearing cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320893112.9U CN219317607U (en) | 2023-04-20 | 2023-04-20 | Annular seal of rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320893112.9U CN219317607U (en) | 2023-04-20 | 2023-04-20 | Annular seal of rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219317607U true CN219317607U (en) | 2023-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320893112.9U Active CN219317607U (en) | 2023-04-20 | 2023-04-20 | Annular seal of rolling bearing |
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| Country | Link |
|---|---|
| CN (1) | CN219317607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231702A (en) * | 2023-11-15 | 2023-12-15 | 北京共创晶桔科技服务股份有限公司 | Hydraulic traction transmission device |
-
2023
- 2023-04-20 CN CN202320893112.9U patent/CN219317607U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231702A (en) * | 2023-11-15 | 2023-12-15 | 北京共创晶桔科技服务股份有限公司 | Hydraulic traction transmission device |
| CN117231702B (en) * | 2023-11-15 | 2024-03-12 | 河南兰兴电力机械有限公司 | Hydraulic traction transmission device |
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