CN211951430U - Ball mill main shaft seal structure - Google Patents
Ball mill main shaft seal structure Download PDFInfo
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- CN211951430U CN211951430U CN202020119922.5U CN202020119922U CN211951430U CN 211951430 U CN211951430 U CN 211951430U CN 202020119922 U CN202020119922 U CN 202020119922U CN 211951430 U CN211951430 U CN 211951430U
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- ball mill
- main shaft
- bearing
- bushing
- end cover
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Abstract
The patent introduces a ball mill main shaft sealing structure which is arranged at the inlet and outlet ports of a ball mill cylinder; the ball mill comprises a ball mill main shaft, a lining, an annular end cover, a main bearing, a bearing compression sleeve, a compression sleeve sealing ring and a plurality of connecting bolts; the connecting bolt respectively penetrates through the mounting hole in the annular end cover and the screw hole of the main shaft of the ball mill, and the inner end of the bushing is arranged inside the main shaft of the ball mill; the main bearing is arranged on the outer edge of the main shaft of the ball mill; the bearing pressing sleeve is arranged on the outer edge of the main shaft of the ball mill between the annular end cover and the main bearing. The utility model discloses a ball mill main shaft seal structure, simple structure, workable compresses tightly the cover and compresses tightly the cooperation of cover sealing washer from bush and ball mill main shaft structure, bearing, and many-sided promotion sealing performance has reduced manufacturing cost, improves production efficiency.
Description
Technical Field
The utility model relates to a ball mill equipment connection technical field, in particular to ball mill main shaft seal structure.
Background
It is known that, in large-scale production enterprises such as mines, metallurgy, electric power, coal and the like, a ball mill is a main production device, and during the operation of the ball mill, because a main bearing of the ball mill is one of main components of the ball mill, the main bearing bears the absolute subdivision load and lubrication work of the whole ball mill, whether the main bearing operates normally or not directly influences the normal operation of the ball mill.
In the main shaft structure of the large-scale ball mill, as the processing size of each part is larger and the processing is difficult, the slurry leakage phenomenon cannot be completely avoided by the material feeding and discharging bushing and the main shaft sealing structure, and the connecting bolts are easy to loosen in the operation process; ore pulp easily enters the main bearing, so that the bearing is damaged and needs to be stopped for maintenance; because large-scale ball mill base bearing size is big, is difficult to process, and weight is big, and it is difficult to shut down the maintenance, causes very big influence to production to increased great manufacturing cost, caused the influence to production, the loss of enterprise is big.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough, providing a ball mill main shaft seal structure, simple structure, sealed effectual, inside avoiding the ore pulp to press the clearance entering main bearing of cover and main shaft through the bearing, improve equipment life and security.
The technical proposal adopted by the utility model is that a ball mill main shaft sealing structure is arranged at the inlet and outlet ports of the ball mill cylinder; the ball mill comprises a ball mill main shaft, a lining, an annular end cover, a main bearing, a bearing compression sleeve, a compression sleeve sealing ring and a plurality of connecting bolts;
the main shaft of the ball mill is a hollow shaft, the circumference of the outer end of the main shaft of the ball mill is provided with screw holes connected with the bushing, and the outer edge of the inner end of the main shaft of the ball mill is provided with a flange connected with an inlet of a cylinder of the ball mill; a first boss is arranged on the inner wall of the outer end of the main shaft of the ball mill along the circumference, and a first step part is arranged on the inner wall of the inner end of the main shaft of the ball mill along the circumference;
the bushing is of a horn-shaped structure, the outer end of the bushing is a small head end, and the inner end of the bushing is a large head end; the outer end of the bushing is provided with a connecting flange connected with the feeding hole, and the outer edge of the inner end of the bushing is provided with a second boss matched with the first step part of the main shaft of the ball mill; the annular end cover is arranged on the outer edge of the bushing close to the connecting flange, the circumference of the annular end cover is provided with a mounting hole corresponding to a screw hole at the outer end of the main shaft of the ball mill, and the inner side of the annular end cover is provided with a second step part matched with a first boss in the main shaft of the ball mill; the connecting bolt respectively penetrates through the mounting hole in the annular end cover and the screw hole of the main shaft of the ball mill, and the inner end of the bushing is arranged inside the main shaft of the ball mill;
the main bearing is arranged on the outer edge of the main shaft of the ball mill; the bearing pressing sleeve is arranged on the outer edge of the main shaft of the ball mill between the annular end cover and the main bearing; the bearing pressing sleeve is provided with a sealing groove on the inner end inner ring, and the pressing sleeve sealing ring is arranged in the sealing groove of the bearing pressing sleeve.
Specifically, a sealing ring is arranged between the end face of the annular end cover connected with the spindle of the ball mill.
Specifically, a sealing ring is arranged between the second boss of the bushing and the first step of the ball mill main shaft.
Specifically, the annular end cover and the bushing are of an integrated structure.
Specifically, the size of the outer edge of the annular end cover is larger than the size of the outer diameter of the main shaft of the ball mill.
Due to the adoption of the technical scheme, the utility model discloses have following superiority:
1. the utility model discloses a ball mill main shaft seal structure, the cooperation of the first boss and the second step portion, the cooperation of first step portion in the second boss that set up respectively on ball mill main shaft, bush and the annular end cover for the ore pulp is through multistage sealing during the operation of ball mill, improves sealed effect, is difficult for oozing;
2. because the size of the outer edge of the annular end cover is larger than the outer diameter of the main shaft of the ball mill, after the annular end cover connects the bushing with the main shaft of the ball mill through the connecting bolt, the annular end cover compresses the bearing compression sleeve, the sealing effect of the compression sleeve sealing ring is improved, the phenomenon that ore pulp enters the main bearing when the bolt is loosened and leaks due to vibration in the working process is avoided, the service life of the main bearing is prolonged, the machine halt caused by damage of the main bearing is reduced, and the use safety of equipment is improved;
3. the utility model discloses a ball mill main shaft seal structure, simple structure, workable compresses tightly the cover and compresses tightly the cooperation of cover sealing washer from bush and ball mill main shaft structure, bearing, and many-sided promotion sealing performance has reduced manufacturing cost, improves production efficiency.
Drawings
Fig. 1 is a schematic cross-sectional view of the overall structure of this patent.
FIG. 2 is a schematic cross-sectional view of the liner and annular end cap of this patent.
FIG. 3 is a schematic cross-sectional view of the ball mill spindle of this patent.
In the figure: the ball mill comprises a bush 1, a ball mill main shaft 2, an annular end cover 3, a bearing compression sleeve 4, a compression sleeve sealing ring 5, a main bearing 6, a second step part 7, a second boss 8, a first boss 9 and a first step part 10.
Detailed Description
The invention will be further explained below with reference to the drawings and examples, without limiting the scope of the invention, which is intended to protect all technical improvements within the scope of the invention.
With reference to the sealing structure of the main shaft of the ball mill shown in the attached figures 1-3, the sealing structure is arranged at the material inlet and discharge positions of the cylinder body of the ball mill; the ball mill comprises a ball mill main shaft 2, a lining 1, an annular end cover 3, a main bearing 6, a bearing compression sleeve 4, a compression sleeve sealing ring 5 and a plurality of connecting bolts;
the main shaft 2 of the ball mill is a hollow shaft, the circumference of the outer end of the main shaft 2 of the ball mill is provided with a screw hole connected with the bushing 1, and the outer edge of the inner end of the main shaft 2 of the ball mill is provided with a flange connected with an inlet of a cylinder of the ball mill; a first boss 9 is arranged on the inner wall of the outer end of the main shaft 2 of the ball mill along the circumference, and a first step part 10 is arranged on the inner wall of the inner end along the circumference; the bushing 1 is of a horn-shaped structure, the outer end of the bushing is a small head end, and the inner end of the bushing is a large head end; a connecting flange connected with the feeding hole is arranged at the outer end of the bushing 1, and a second boss 8 matched with a first step part 10 of the ball mill main shaft 2 is arranged on the outer edge of the inner end of the bushing 1; a sealing ring is arranged between the second boss 8 and the first step part 10 of the main shaft 2 of the ball mill.
The annular end cover 3 is arranged on the outer edge of the bushing 1 close to the connecting flange, mounting holes corresponding to screw holes at the outer end of the main shaft 2 of the ball mill are formed in the circumference of the annular end cover 3, and a second step part 7 matched with a first boss 9 in the main shaft 2 of the ball mill is arranged on the inner side of the annular end cover 3; the annular end cover 3 and the bush 1 are of an integrated structure; connecting bolts respectively penetrate through mounting holes in the annular end cover 3 and screw holes of the ball mill main shaft 2, and the inner end of the bushing 1 is arranged inside the ball mill main shaft 2; the size of the outer edge of the annular end cover 3 is larger than the size of the outer diameter of the main shaft 2 of the ball mill; and a sealing ring is arranged between the end surface of the annular end cover 3 connected with the main shaft 2 of the ball mill.
The main bearing 6 is arranged on the outer edge of the main shaft 2 of the ball mill; the bearing compression sleeve 4 is arranged on the outer edge of the main shaft 2 of the ball mill between the annular end cover 3 and the main bearing 6; a sealing groove is formed in an inner end inner ring of the bearing pressing sleeve 4, and a pressing sleeve sealing ring 5 is arranged in the sealing groove of the bearing pressing sleeve 4.
The part of the utility model not detailed is prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.
Claims (5)
1. A ball mill main shaft sealing structure is arranged at the inlet and outlet ports of a ball mill cylinder; the ball mill is characterized by comprising a ball mill main shaft, a lining, an annular end cover, a main bearing, a bearing compression sleeve, a compression sleeve sealing ring and a plurality of connecting bolts;
the main shaft of the ball mill is a hollow shaft, the circumference of the outer end of the main shaft of the ball mill is provided with screw holes connected with the bushing, and the outer edge of the inner end of the main shaft of the ball mill is provided with a flange connected with an inlet of a cylinder of the ball mill; a first boss is arranged on the inner wall of the outer end of the main shaft of the ball mill along the circumference, and a first step part is arranged on the inner wall of the inner end of the main shaft of the ball mill along the circumference;
the bushing is of a horn-shaped structure, the outer end of the bushing is a small head end, and the inner end of the bushing is a large head end; the outer end of the bushing is provided with a connecting flange connected with the feeding hole, and the outer edge of the inner end of the bushing is provided with a second boss matched with the first step part of the main shaft of the ball mill; the annular end cover is arranged on the outer edge of the bushing close to the connecting flange, the circumference of the annular end cover is provided with a mounting hole corresponding to a screw hole at the outer end of the main shaft of the ball mill, and the inner side of the annular end cover is provided with a second step part matched with a first boss in the main shaft of the ball mill; the connecting bolt respectively penetrates through the mounting hole in the annular end cover and the screw hole of the main shaft of the ball mill, and the inner end of the bushing is arranged inside the main shaft of the ball mill;
the main bearing is arranged on the outer edge of the main shaft of the ball mill; the bearing pressing sleeve is arranged on the outer edge of the main shaft of the ball mill between the annular end cover and the main bearing; the bearing pressing sleeve is provided with a sealing groove on the inner end inner ring, and the pressing sleeve sealing ring is arranged in the sealing groove of the bearing pressing sleeve.
2. The ball mill spindle seal structure according to claim 1, characterized in that: and a sealing ring is arranged between the end surface of the annular end cover connected with the spindle of the ball mill.
3. The ball mill spindle seal structure according to claim 1, characterized in that: and a sealing ring is arranged between the second boss of the bushing and the first step part of the main shaft of the ball mill.
4. The ball mill spindle seal structure according to claim 1, characterized in that: the annular end cover and the lining are of an integrated structure.
5. The ball mill spindle seal structure according to claim 1, characterized in that: the size of the outer edge of the annular end cover is larger than the size of the outer diameter of the main shaft of the ball mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020119922.5U CN211951430U (en) | 2020-01-19 | 2020-01-19 | Ball mill main shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020119922.5U CN211951430U (en) | 2020-01-19 | 2020-01-19 | Ball mill main shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211951430U true CN211951430U (en) | 2020-11-17 |
Family
ID=73174195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020119922.5U Active CN211951430U (en) | 2020-01-19 | 2020-01-19 | Ball mill main shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211951430U (en) |
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2020
- 2020-01-19 CN CN202020119922.5U patent/CN211951430U/en active Active
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