CN219836597U - Novel grinding ball of ball mill and novel ball mill adopting same - Google Patents
Novel grinding ball of ball mill and novel ball mill adopting same Download PDFInfo
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- CN219836597U CN219836597U CN202321196191.4U CN202321196191U CN219836597U CN 219836597 U CN219836597 U CN 219836597U CN 202321196191 U CN202321196191 U CN 202321196191U CN 219836597 U CN219836597 U CN 219836597U
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- 238000000227 grinding Methods 0.000 title claims abstract description 103
- 239000000843 powder Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 23
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 239000004568 cement Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model discloses a novel grinding ball of a ball mill, the number of the grinding balls is a plurality of the grinding balls, the plurality of the grinding balls comprise a plurality of diameters, wherein a part of the grinding balls comprise at least one spherical crown-shaped pit, and the diameter of the at least one spherical crown-shaped pit on each grinding ball is at least the same as one of the plurality of diameters of the plurality of the grinding balls. The novel grinding ball of the ball mill can effectively improve the working efficiency of the superfine powder grinding ball mill.
Description
Technical Field
The utility model relates to the field of ball mills, in particular to a novel grinding ball of a ball mill capable of improving ball milling efficiency and a novel ball mill adopting the grinding ball.
Background
The ball mill is a key device for crushing materials after the materials are crushed, and is shown in figure 1. It is widely used in cement, silicate products, novel building materials, refractory materials, chemical fertilizers, mineral processing of black and nonferrous metals, glass ceramics and other production industries, and carries out dry or wet grinding on various ores and other grindability materials. The ball mill is suitable for grinding various ores and other materials, is widely used in the industries of mineral separation, building materials, chemical industry and the like, and can be divided into dry type and wet type ore grinding modes. According to different ore discharging modes, the two types of the grid type and the overflow type can be realized.
The ball mill consists of horizontal cylinder, hollow feeding and discharging shaft, grinding head, etc. the cylinder is long cylinder with grinding body inside, and the cylinder is made of steel plate and has steel lining board fixed to the cylinder.
The material is selected according to the granularity of the ground material, the material is filled into the cylinder body by the hollow shaft at the feeding end of the ball mill, when the ball mill cylinder body rotates, the grinding body is attached to the cylinder liner plate and taken away by the cylinder body under the action of inertia and centrifugal force, and when the ball mill cylinder body is taken to a certain height, the ground material in the cylinder body is thrown down under the action of gravity of the grinding body, and the fallen grinding body breaks up the material in the cylinder body like a projectile.
The material enters the first bin of the mill uniformly through the feeding device and the feeding hollow shaft, the stepped lining board or the corrugated lining board is arranged in the first bin, steel balls with various specifications are arranged in the first bin, the steel balls are brought to a certain height by the centrifugal force generated by the rotation of the cylinder body and then fall down, and the heavy impact and grinding effects are generated on the material. After the materials are coarsely ground in the first bin, the materials enter the second bin through a single-layer bin separation plate, a flat lining plate is inlaid in the second bin, steel balls are arranged in the second bin, and the materials are further ground. The powder is discharged through the discharging grate plate, and the grinding operation is completed.
The cylinder body also has the phenomenon of slipping in the process of gyration, the material is ground in the process of slipping, in order to effectively utilize the grinding effect, when grinding the general twenty meshes with larger material granularity, the grinding body cylinder body is divided into two sections by the partition plate, namely, the two sections are formed into double bins, the material is smashed by the steel ball when entering the first bin, the steel section grinds the material when entering the second bin, the finely ground qualified material is discharged from the hollow shaft at the discharge end, and when grinding the material with small feed particles, such as sand No. two slag, coarse powder coal ash, the grinding cylinder body can be provided with no partition plate, and the grinding body can also be ground by the steel section.
The raw materials are fed into a hollow cylinder through a hollow shaft neck for grinding, and grinding media (steel balls, steel bars or gravels and the like) with various diameters are filled in the cylinder. When the cylinder rotates around the horizontal axis at a certain rotation speed, the medium and the raw materials in the cylinder reach a certain height along with the cylinder under the action of centrifugal force and friction force, and when the gravity of the cylinder is greater than the centrifugal force, the medium and the raw materials are separated from the inner wall of the cylinder to be thrown or rolled down, and the ore is broken due to the impact force. Meanwhile, in the rotation process of the mill, the sliding motion of the grinding media generates grinding action on the raw materials. The ground material is discharged through the hollow shaft neck.
However, the grinding balls of the ball mill in the prior art are basically common steel balls, the materials are crushed by means of collision between the balls, but the contact between the balls belongs to point contact, as shown in fig. 2, the point contact between the balls is obviously low in efficiency for grinding cement or superfine powder, most of materials with crushing are concentrated in gaps between the balls and are not crushed, so that the common steel balls are one of the main problems affecting the working efficiency of the superfine powder grinding ball mill, and are also one of the problems to be solved urgently in the industry.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The utility model aims to provide a novel grinding ball of a ball mill, which can effectively improve the working efficiency of the superfine powder grinding ball mill.
In order to achieve the above object, the present utility model provides a novel grinding ball of a ball mill, wherein the number of the grinding balls is a plurality, the plurality of grinding balls comprise a plurality of diameters, wherein a part of the grinding balls comprise at least one spherical crown-shaped pit, and the diameter of the at least one spherical crown-shaped pit on each grinding ball is at least the same as one of the plurality of diameters of the plurality of grinding balls.
In a preferred embodiment, the number of spherical cap shaped recesses on at least one grinding ball is between 1 and 6.
In a preferred embodiment, the spherical cap shaped recesses are evenly distributed over the surface of the grinding ball when the number of spherical cap shaped recesses on each grinding ball is greater than one.
In a preferred embodiment, the plurality of spherical cap shaped recesses on each grinding ball are the same diameter.
In a preferred embodiment, the plurality of spherical cap shaped recesses on each grinding ball are of different diameters.
In a preferred embodiment, the plurality of grinding balls have a diameter of between 5mm and 100 mm.
In a preferred embodiment, the depth of the spherical cap shaped recess on each grinding ball is between 0.5mm and 20 mm.
In order to achieve the aim, the utility model also provides a novel ball mill which adopts the grinding balls.
Compared with the prior art, the novel grinding ball of the ball mill has the following beneficial effects that: according to the scheme, the plurality of spherical crown-shaped pits with the same or different diameters are added on the surfaces of grinding balls with various diameters, but the spherical crown-shaped pits are matched with the grinding balls with the same diameters, and when the spherical crown-shaped pits collide with the grinding balls with the matched diameters, the surfaces of the pits and the surfaces of the grinding balls can form surface contact, so that the contact area between the grinding balls can be greatly increased, and the working efficiency of the superfine powder grinding ball mill such as cement can be further improved.
Drawings
Fig. 1 is a schematic perspective view of a ball mill according to an embodiment of the prior art;
FIG. 2 is a schematic view of the point contact structure between grinding balls according to an embodiment of the prior art;
FIG. 3 is a schematic view of the external appearance of a grinding ball according to an embodiment of the utility model;
fig. 4 is a schematic view of the structure of the surface contact between the grinding balls according to an embodiment of the utility model.
Detailed Description
The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1 to 2, a novel grinding ball of a ball mill according to a preferred embodiment of the present utility model has a plurality of grinding balls, the plurality of grinding balls including a plurality of diameters, wherein a part of the grinding balls includes at least one spherical cap-shaped recess thereon, and the diameter of the at least one spherical cap-shaped recess on each grinding ball is at least the same as one of the plurality of diameters of the plurality of grinding balls. That is to say if there are a total of 6 different diameter grinding balls, the diameter of each spherical cap recess on each grinding ball matches at least the diameter of one grinding ball.
In some embodiments, the number of spherical cap shaped pockets on at least one of the grinding balls is between 1 and 6.
In some embodiments, when the number of spherical cap shaped pockets on each grinding ball is greater than one, the spherical cap shaped pockets are evenly distributed over the surface of the grinding ball.
In some embodiments, the plurality of spherical cap shaped recesses on each grinding ball are the same diameter. For example, the grinding ball is provided with 3 or 5 spherical cap shaped recesses, and the diameters of the 3 or 5 spherical cap shaped recesses can be the same.
In some embodiments, the plurality of spherical cap shaped recesses on each grinding ball are different in diameter. That is, for example, the grinding ball is provided with 3 or 5 spherical cap shaped recesses, and the diameters of the 3 or 5 spherical cap shaped recesses may be different. For example, the diameter of the spherical cap pit can be the same as 3 diameters, and the other two diameters are the other diameters, and the diameter of the spherical cap pit can be 5 different sizes. The number and the diameter of the spherical crown-shaped pits on each grinding ball can be calculated and designed according to actual needs.
In some embodiments, the plurality of grinding balls of the present example are between 5mm and 100mm in diameter, although the utility model is not so limited.
In some embodiments, the depth of the spherical cap shaped recess is in principle about 1/10 of the diameter of the grinding ball itself, for example a plurality of grinding balls having diameters between 5mm and 100mm, the depth of the spherical cap shaped recess on each grinding ball being between 0.5mm and 20 mm. The design can ensure the strength of the grinding ball and improve the working efficiency of the ball mill.
The actual test data are shown in the following table:
in order to achieve the other object, the utility model also provides a novel ball mill, which adopts the grinding balls.
In summary, the novel grinding ball of the ball mill provided by the utility model and the novel ball mill adopting the grinding ball have the following advantages: according to the scheme, the plurality of spherical crown-shaped pits with the same or different diameters are added on the surfaces of grinding balls with various diameters, but the spherical crown-shaped pits are matched with the grinding balls with the same diameters, and when the spherical crown-shaped pits collide with the grinding balls with the matched diameters, the surfaces of the pits and the surfaces of the grinding balls can form surface contact, so that the contact area between the grinding balls can be greatly increased, and the working efficiency of the superfine powder grinding ball mill such as cement can be further improved.
The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (8)
1. A novel grinding ball of a ball mill, which is characterized in that the number of the grinding balls is a plurality, the plurality of the grinding balls comprise a plurality of diameters, wherein a part of the grinding balls comprise at least one spherical crown-shaped pit, and the diameter of the at least one spherical crown-shaped pit on each grinding ball is at least the same as one of the plurality of diameters of the plurality of the grinding balls.
2. A novel ball for a ball mill according to claim 1, wherein the number of spherical cap shaped depressions on at least one of said balls is between 1 and 6.
3. A novel ball for a ball mill according to claim 2, wherein said spherical cap shaped depressions are uniformly distributed on the surface of said ball when the number of said spherical cap shaped depressions on each of said balls is greater than one.
4. A novel ball mill according to claim 2, wherein the plurality of said spherical cap shaped depressions on each of said balls are of the same diameter.
5. A novel ball mill according to claim 2, wherein a plurality of said spherical cap shaped recesses on each of said balls are of different diameters.
6. A new grinding ball for a ball mill according to claim 2, characterized in that the grinding balls have a plurality of diameters between 5mm and 100 mm.
7. A new grinding ball for a ball mill according to claim 2, wherein the depth of said spherical cap shaped recess in each of said grinding balls is between 0.5mm and 20 mm.
8. A novel ball mill, characterized in that it employs a grinding ball according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321196191.4U CN219836597U (en) | 2023-05-17 | 2023-05-17 | Novel grinding ball of ball mill and novel ball mill adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321196191.4U CN219836597U (en) | 2023-05-17 | 2023-05-17 | Novel grinding ball of ball mill and novel ball mill adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219836597U true CN219836597U (en) | 2023-10-17 |
Family
ID=88299794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321196191.4U Active CN219836597U (en) | 2023-05-17 | 2023-05-17 | Novel grinding ball of ball mill and novel ball mill adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219836597U (en) |
-
2023
- 2023-05-17 CN CN202321196191.4U patent/CN219836597U/en active Active
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