CN212284266U - Combined type barrel of ball mill - Google Patents
Combined type barrel of ball mill Download PDFInfo
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- CN212284266U CN212284266U CN202020842780.5U CN202020842780U CN212284266U CN 212284266 U CN212284266 U CN 212284266U CN 202020842780 U CN202020842780 U CN 202020842780U CN 212284266 U CN212284266 U CN 212284266U
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- spigot
- ball mill
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Abstract
The utility model relates to a combined barrel of a ball mill, which comprises a barrel body, a flange, a web plate, a slip ring and bolts, wherein two ends of the barrel body are welded with the flange, the web plate is welded with the slip ring, through holes are arranged on the flange and the web plate, a circular seam allowance is arranged on the web plate close to the flange, the diameter of the seam allowance is the same as the outer diameter of the flange, and the flange is arranged in the seam allowance and is connected with the web plate through the bolts passing through the through; the cylinder body is formed by welding a plurality of arc-shaped steel plates in parallel in the circumferential direction in a segmented manner in the axial direction, the flange is formed by welding a plurality of fan-shaped annular steel plates in a spliced manner, the web plate is formed by welding a plurality of fan-shaped steel plates in a spliced manner, and the slip ring is formed by welding a plurality of arc-shaped steel plates in a spliced manner; the bolt and the nut adopt double nuts or locknuts. When the barrel or the slip ring is cracked, only corresponding parts need to be replaced, so that the use and maintenance cost is saved; the cylinder, the flange, the web plate and the slip ring are formed by welding in blocks, so that the manufacturing cost is reduced, the cylinder can be transported in sections, and the transportation cost is reduced; the whole structure is firm, the service life is long, and the production and maintenance cost is low.
Description
Technical Field
The utility model belongs to the technical field of the ball mill, especially, relate to a ball mill combination formula barrel.
Background
The ball mill is a production machine which is widely applied in a grinding system and plays a great role. The cylinder is also a key part of the ball mill, and the whole grinding operation process is finished at the same time.
At present, the main structure of the cylinder is that a grinding head end cover (formed by welding a sliding ring and a web plate) is directly welded with a cylinder steel plate, the whole body is annealed after welding, and the working surfaces of the two sliding rings are processed. The whole barrel, including the grinding body and the material, is supported on the sliding shoe bearing through the two sliding rings, so that the material and the processing quality of the sliding rings and the welding quality between the sliding rings and the barrel directly influence the safe operation of the mill. Because frequently open and stop mill or other reasons, the welding seam between web and the sliding ring bears alternating stress repeatedly, and the welding seam ftractures to extend to the sliding ring direction, at this moment change whole barrel and tend to be in force, and because barrel formula structure as an organic whole, lead to also needing whole going on in processing and transportation, whole change is long, with high costs.
Disclosure of Invention
The utility model discloses a solve the problem that exists among the prior art, provided a ball mill combination formula barrel, this combination formula barrel is under equal life, and is lower than current barrel comprehensive cost.
The utility model discloses a so realized, a ball mill combination formula barrel, including barrel, flange, web, sliding ring and bolt, the both ends of barrel and flange welding, web and sliding ring welding, all be equipped with the through-hole of a plurality of equipartitions on flange and the web, flange and web pass through the bolted connection of through-hole; the cylinder body is formed by welding a plurality of arc-shaped steel plates in parallel in the circumferential direction in a segmented manner in the axial direction, the flange is formed by welding a plurality of fan-shaped annular steel plates in a spliced manner, the web plate is formed by welding a plurality of fan-shaped steel plates in a spliced manner, and the slip ring is formed by welding a plurality of arc-shaped steel plates in a spliced manner; the nut of each bolt adopts double nuts or locknuts.
In the above technical solution, preferably, a circular spigot is provided on the web close to the flange side, the diameter of the spigot is the same as the outer diameter of the flange, and the flange is placed in the spigot and connected with the web through a bolt passing through the through hole. And the seam allowance is processed after annealing heat treatment is carried out after the web and the slip ring are welded. The roughness of the spigot is less than or equal to 6.3, the end face circle run-out tolerance of a circular ring surface of the spigot in contact with the flange relative to the outer cylindrical surface of the sliding ring is less than or equal to 0.15, the coaxiality tolerance of a cylindrical surface of the spigot in contact with the flange relative to the outer cylindrical surface of the sliding ring is less than or equal to phi 0.3, and the hole tolerance band code of the cylindrical surface of the spigot in contact with the flange is F9; the roughness of the contact surface of the flange and the spigot is less than or equal to 6.3, and the axle tolerance band of the cylindrical surface of the flange in contact with the spigot is f 9.
In the above technical scheme, preferably, the thickness of the steel plate of the cylinder is 30-60 mm.
In the technical scheme, preferably, the thickness of the steel plate of the flange is 50-100 mm.
In the technical scheme, preferably, the thickness of the steel plate of the web plate is 60-100 mm.
In the above technical scheme, preferably, the thickness of the steel plate of the slip ring is 80-120 mm.
In the above technical solution, preferably, the bolt may be a partially reamed hole bolt.
The patent has the advantages and positive effects that:
by adopting the technical scheme, the flange is connected with the web plate through the bolt, when the barrel body or the sliding ring is cracked, only corresponding parts need to be replaced, the whole barrel body or the sliding ring does not need to be replaced, the use and maintenance cost is saved, and the transportation cost can be reduced by transporting the parts; a circular spigot matched with the flange is arranged on the web plate close to the flange, so that the finish machining area of the web plate is reduced, and meanwhile, the web plate can be used as a positioning circle; the cylinder, the flange, the web plate and the slip ring are all formed by welding in blocks, so that the manufacturing cost can be reduced; the combined type cylinder body of the ball mill has the advantages of firm structure, convenient use, long service life and lower production and maintenance cost.
Drawings
Fig. 1 is a schematic structural diagram of a combined cylinder provided in an embodiment of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1. the device comprises a cylinder body, 2, a flange, 3, a slip ring, 4 and a web plate; 41. stopping the opening; 5. and (4) bolts.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:
referring to fig. 1 and 2, the utility model provides a ball mill combined cylinder, including cylinder 1, flange 2, web 4, sliding ring 3 and bolt 5, the both ends of cylinder 1 are welded with flange 2, web 4 and sliding ring 3 are welded, all be equipped with a plurality of evenly distributed through-holes on flange 2 and the web 4, web 4 is close to flange 2 side and is equipped with circular tang 41, the diameter of tang 41 is the same with the external diameter of flange 2, flange 2 is arranged in tang 41 and is connected through the bolt 5 that passes the through-hole with web 4 to reduce the finish machining area of web 4, makes the circle of location use simultaneously; and the seam allowance is processed after annealing heat treatment is carried out after the web and the slip ring are welded. The roughness of the spigot is less than or equal to 6.3, the end face circle run-out tolerance of the circular ring surface of the spigot in contact with the flange relative to the outer cylindrical surface of the slip ring is less than or equal to 0.15, the coaxiality tolerance of the cylindrical surface of the spigot in contact with the flange relative to the outer cylindrical surface of the slip ring is less than or equal to phi 0.3, and the hole tolerance band code of the cylindrical surface of the spigot in contact with the flange is F9; the roughness of the contact surface of the flange and the spigot is less than or equal to 6.3, and the axle tolerance zone of the contact cylindrical surface of the flange and the spigot is f 9; the degree of cooperation of the flange, the web and the slip ring is guaranteed. The cylinder body 1 is formed by welding a plurality of arc-shaped steel plates in parallel in the circumferential direction in a segmented manner in the axial direction, the flange 2 is formed by welding a plurality of fan-shaped annular steel plates in a spliced manner, the web 4 is formed by welding a plurality of fan-shaped steel plates in a spliced manner, and the slip ring 3 is formed by welding a plurality of arc-shaped steel plates in a spliced manner; the welding seams of the tailor welding of the cylinder, the flange, the web and the slip ring are butt welding seams, the bolt can be partially a reamed hole bolt, the bolt needs to be anti-loose measures, and the bolt and the nut can be double-nut anti-loose and can also be anti-loose.
The specific manufacturing process of the combined cylinder body is as follows:
the barrel 1 is rolled by steel plates, is formed by axially segmenting and welding side by side in the circumferential direction, and the thickness of the barrel steel plates is generally 30-60 mm. The maximum capacity of a plate bending machine is fully considered for rolling and arranging the cylinder steel plates, the total length of the welding seams is guaranteed to be the shortest as a criterion for splicing the steel plates, and when the longitudinal welding seams and the circumferential welding seams are arranged to conflict, the circumferential welding seams are guaranteed to be the main purpose, and the longitudinal welding seams are reduced.
The flange 2 is formed by welding steel plates in a splicing mode, the flange is welded at two ends of the barrel 1 after machining is finished, and the thickness of the flange steel plates is generally 50-100 mm. After three sections of circular arcs are cut according to a certain central angle, the circular arcs are welded into a whole circle. After welding as an organic whole with barrel 1, carry out thermal treatment and eliminate thermal stress, finish machining the flange according to the drawing at last: the roughness of the contact surface of the flange and the spigot is less than or equal to 6.3, and the axle tolerance band of the contact cylindrical surface of the flange and the spigot is f 9.
The slip ring 3 is formed by rolling and welding a thick steel plate, and the thickness of the slip ring steel plate is generally 80-120 mm. And (4) rolling according to a certain central angle, frequently cleaning the inner side of the slip ring during rolling to avoid the defects caused by pressing foreign matters into the steel plate, and cutting off a pressure head and welding after rolling. And (5) rounding by using a plate bending machine after welding.
The web plate 4 is formed by welding steel plates, is integrally welded with the slip ring after being processed, and is generally 60-100 mm thick. The number of web plate splicing blocks is reduced as much as possible, and the welding seams are radial welding seams. And after welding, ultrasonic flaw detection is carried out, so that cracks are avoided. And (4) immediately assembling the web after the slide ring is preheated by baking, wherein the time for assembling the web cannot exceed 15 minutes. After the assembly is finished, the components are cooled to room temperature and then welded into a whole, and welding seams are polished and annealed to eliminate welding thermal stress. And finally, finish machining the spigot according to a drawing: the roughness of the spigot is less than or equal to 6.3, the end face circle run-out tolerance of the contact annular surface of the spigot and the flange relative to the outer cylindrical surface of the sliding ring is less than or equal to 0.15, the coaxiality tolerance of the contact cylindrical surface of the spigot and the flange relative to the outer cylindrical surface of the sliding ring is less than or equal to phi 0.3, and the hole tolerance band code of the contact cylindrical surface of the spigot and the flange is F9.
The web 4 and the flange 2 are fixedly connected by bolts. The bolt can be partially a reamed hole bolt. The bolt group needs to be anti-loose, and double nuts can be selected for anti-loose and anti-loose nuts can be also selected for anti-loose. Before leaving the factory, a pairing mark is marked.
The utility model discloses a modular barrel structural design is convenient for change, the transportation is convenient, each part can be processed alone, can reduce the cost of manufacture, reduces the freight, practices thrift the replacement time.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (7)
1. The combined type barrel of the ball mill is characterized by comprising a barrel, a flange, a web plate, a sliding ring and bolts, wherein two ends of the barrel are welded with the flange; the cylinder body is formed by welding a plurality of arc-shaped steel plates in parallel in the circumferential direction in a segmented manner in the axial direction, the flange is formed by welding a plurality of fan-shaped annular steel plates in a spliced manner, the web plate is formed by welding a plurality of fan-shaped steel plates in a spliced manner, and the slip ring is formed by welding a plurality of arc-shaped steel plates in a spliced manner; the nut of each bolt adopts double nuts or locknuts.
2. A combined cylinder of a ball mill according to claim 1, characterized in that a circular spigot is arranged on the side of the web close to the flange, the diameter of the spigot is the same as the outer diameter of the flange, and the flange is arranged in the spigot and connected with the web through a bolt passing through the through hole; the roughness of the spigot is less than or equal to 6.3, the end face circle run-out tolerance of a circular ring surface of the spigot in contact with the flange relative to the outer cylindrical surface of the sliding ring is less than or equal to 0.15, the coaxiality tolerance of a cylindrical surface of the spigot in contact with the flange relative to the outer cylindrical surface of the sliding ring is less than or equal to phi 0.3, and the hole tolerance band code of the cylindrical surface of the spigot in contact with the flange is F9; the roughness of the contact surface of the flange and the spigot is less than or equal to 6.3, and the axle tolerance band of the cylindrical surface of the flange in contact with the spigot is f 9.
3. A combined cylinder of a ball mill according to claim 1, wherein the thickness of the steel plate of the cylinder is 30-60 mm.
4. A combined cylinder of a ball mill according to claim 1, wherein the thickness of the steel plate of the flange is 50-100 mm.
5. A combined cylinder of a ball mill according to claim 1, wherein the web has a steel plate thickness of 60 to 100 mm.
6. A combined cylinder of a ball mill according to claim 1, wherein the thickness of the steel plate of the slip ring is 80-120 mm.
7. A ball mill modular cartridge according to claim 1, wherein said bolts are partially reamed bore bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020842780.5U CN212284266U (en) | 2020-05-19 | 2020-05-19 | Combined type barrel of ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020842780.5U CN212284266U (en) | 2020-05-19 | 2020-05-19 | Combined type barrel of ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212284266U true CN212284266U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020842780.5U Active CN212284266U (en) | 2020-05-19 | 2020-05-19 | Combined type barrel of ball mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619205A (en) * | 2022-03-08 | 2022-06-14 | 中国葛洲坝集团机械船舶有限公司 | Manufacturing method of large steel structure with multiple flange connections |
-
2020
- 2020-05-19 CN CN202020842780.5U patent/CN212284266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619205A (en) * | 2022-03-08 | 2022-06-14 | 中国葛洲坝集团机械船舶有限公司 | Manufacturing method of large steel structure with multiple flange connections |
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