Grinding structure of ball mill
By using a grinding structure consisting of arrayed partitions and ribs in the ball mill, combined with grinding balls of different sizes, the problem of poor grinding effect of small particle materials is solved, and efficient crushing and uniform particle size distribution are achieved.
Patent Information
- Application Number
- CN202422543804.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-21
AI Technical Summary
Existing ball mills have limited grinding effects on small-particle materials, which are easily accumulated in the gaps between the ribs and the grinding balls, resulting in low crushing efficiency and irregular material shapes.
The grinding structure is arranged in an array, including a partition assembly and a grinding assembly, combined with grinding balls of different sizes. The relative movement between the grinding medium and the grinding structure is achieved by rotating the shell, thereby increasing the material's drop height and contact frequency and optimizing the particle size distribution.
It improves the crushing efficiency, ensures the regular shape of the material, reduces the void ratio, realizes the effective grinding of different particle sizes, and optimizes the product fineness.
Smart Images
Figure CN223405038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ball mills, in particular to a grinding structure of a ball mill. Background Art
[0002] The ball mill's grinding process is actually a process of applying external force to the material and causing it to continuously break down to achieve the required particle size. This process can be divided into two stages. When the material entering the mill is coarse, the grinding body applies impact force to the material, causing the original cracks in the material particles to expand and produce more cracks, accompanied by the formation of new surfaces. When the material entering the mill reaches a certain fineness, it mainly relies on the grinding effect of the grinding body on the material particles to achieve the required particle size.
[0003] The existing ball mill grinds the material through the ribs and ball milling media inside the shell. However, for some small particles of materials, the crushing effect of the materials during the grinding process is limited, and they are easily accumulated in the gaps between the ribs and the grinding balls. The existing method only prolongs the grinding time to make the materials more fully stirred. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a ball mill grinding structure.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a ball mill grinding structure, comprising:
[0006] case;
[0007] The inner wall of the shell is provided with an array of grinding structures;
[0008] A plurality of grinding media are arranged in the volume cavity of the shell. The shell rotates to make the grinding media and the grinding structure move relative to each other, thereby grinding the material in the shell.
[0009] As a further description of the above technical solution: the grinding structure includes a partition assembly and a grinding assembly, and the partition assembly and the grinding assembly are alternately arranged in a circumferential array on the inner wall of the shell.
[0010] As a further description of the above technical solution: the partition assembly includes a plurality of partitions, and the plurality of partitions are arranged in sequence along the radial direction and / or axial direction of the shell, and there are gaps between the plurality of partitions.
[0011] As a further description of the above technical solution: a plurality of the partitions form an angle with the tangent direction of the shell.
[0012] As a further description of the above technical solution: the degree of the angle is 45°-90°.
[0013] As a further description of the above technical solution: the grinding assembly includes a plurality of ribs.
[0014] As a further description of the above technical solution: the ribs are vertically connected to the shell, parallel to the axial direction in the length direction, and are corrugated.
[0015] As a further description of the above technical solution: the side of the rib away from the shell is a curved surface.
[0016] As a further description of the above technical solution: the grinding media are a plurality of grinding balls with the same or different diameters.
[0017] As a further description of the above technical solution: the sizes of the grinding balls are designed to be large, medium and small. The size of the large balls is 10-15 mm, the size of the medium balls is 5-10 mm, and the size of the small balls is 1-5 mm.
[0018] The above technical solution has the following advantages or beneficial effects:
[0019] 1. The grinding structure can bring the material and grinding media to a certain height as the inner wall of the ball mill rotates, increasing the chance of falling and improving the crushing efficiency; at the same time, the relative movement between the grinding media and the grinding structure has a continuous grinding effect on the material, and the shape of the obtained material is more regular.
[0020] 2. The use of different sizes of grinding media gradations can minimize the void ratio and increase the contact between the material and the grinding media. Different particle sizes can be effectively ground in the ball mill, thereby ensuring that the fineness of the product is optimized and the grinding effect is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the structure of the grinding structure proposed by the utility model;
[0022] Figure 2 This is a side sectional view of the grinding structure proposed in the present invention.
[0023] Legend:
[0024] 1. Shell; 2. Grinding medium; 3. Partition assembly; 4. Grinding assembly. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0026] Reference Figure 1-Figure 2 The utility model provides an embodiment: a ball mill grinding structure, comprising: a shell 1; an array-arranged grinding structure is arranged on the inner wall of the shell 1; a plurality of grinding media 2 are arranged in the volume cavity of the shell 1, and the shell 1 is rotated to make the grinding media 2 and the grinding structure move relative to each other, thereby grinding the material in the shell 1.
[0027] In this embodiment, the ball mill is a horizontal ball mill. The shell 1 is a cylindrical structure with a volume cavity on the inside. The shell 1 rotates radially, driving the material and grinding medium inside to rotate. The grinding structure can bring the material and grinding medium 2 to a certain height as the inner wall of the ball mill rotates, increasing the chance of falling motion and improving crushing efficiency. At the same time, the relative motion between the grinding medium 2 and the grinding structure has a continuous grinding effect on the material, and the shape of the obtained material is more regular, reducing the grinding time.
[0028] The grinding structure includes a baffle assembly 3 and a grinding assembly 4 , which are alternately arranged in a circumferential array on the inner wall of the housing 1 .
[0029] In this embodiment, the baffle assembly 3 and grinding assembly 4 are mounted on the inner wall of the housing 1. The baffle assembly 3 brings the material and grinding media 2 to a certain height before dropping them below the housing 1, where they move relative to the grinding assembly 4, crushing and grinding the material. The baffle assemblies 3 and grinding assemblies 4 are arranged alternately in a circular array, with at least one grinding assembly 4 positioned between the baffle assemblies 3, ensuring sufficient grinding of the material.
[0030] The partition assembly 3 includes a plurality of partitions, which are sequentially arranged along the radial direction and / or axial direction of the shell 1 , and gaps exist between the partitions.
[0031] In this embodiment, the partition assembly 3 is a plurality of partitions arranged in parallel, and there are gaps between the partitions, so that some of the crushed materials can fall from the gaps, reducing the lifting height and avoiding excessive crushing of the materials, so that the materials can be ground into the required size.
[0032] The plurality of partitions form an angle with the tangent direction of the shell 1; the degree of the angle is 45°-90°.
[0033] In this embodiment, the direction of the angle is the same as the rotation direction of the shell 1, which is used to drive the material to a certain height. The angle is preferably 60°, and a gap with a certain angle is formed between the shell 1 to hold the material.
[0034] The grinding assembly 4 includes a plurality of ribs extending toward the center of the shell 1 ; the ribs are vertically connected to the shell 1 , parallel to the axial direction in the length direction, and are corrugated; the side of the ribs away from the shell 1 is a curved surface.
[0035] In this embodiment, the grinding assembly 4 is a continuously arranged rib with a curved surface at the top, which can achieve relative movement between the material and the grinding medium 2 to grind the material.
[0036] The grinding media 2 are a number of grinding balls with the same or different diameters. Specifically, the grinding balls are designed to be large, medium and small in size. The large balls are 10-15 mm in size, the medium balls are 5-10 mm in size and the small balls are 1-5 mm in size.
[0037] In this embodiment, the grinding balls are designed to be sized in three grades: large, medium, and small, with a ratio of large balls: medium balls: small balls of 1:3:1. The large balls are 10 mm in size, the medium balls are 6 mm in size, and the small balls are 3 mm in size. The finished material size is 30 to 50 μm. The use of different grinding media gradations minimizes voids and increases contact between the material and the grinding media. This allows for efficient grinding of different particle sizes within the ball mill, ensuring optimized product fineness and excellent grinding results. During the initial grinding stage, when the material is large, the large grinding media play a primary role in the grinding process. Once the particle size is reduced to a certain level, the small grinding media take over, resulting in a narrower final particle size distribution and more uniform particle size.
[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A ball mill grinding structure, characterized in that: include: Housing (1); The inner wall of the housing (1) is provided with grinding structures arranged in an array; A plurality of grinding media (2) are arranged in the volume cavity of the shell (1), and the shell (1) is rotated to cause relative movement between the grinding media (2) and the grinding structure, thereby grinding the material in the shell (1).
2. The grinding structure according to claim 1, wherein: The grinding structure comprises a baffle assembly (3) and a grinding assembly (4), and the baffle assembly (3) and the grinding assembly (4) are alternately arranged in a circumferential array on the inner wall of the shell (1).
3. The grinding structure according to claim 2, wherein: The partition assembly (3) comprises a plurality of partitions, wherein the plurality of partitions are sequentially arranged along the radial direction and / or the axial direction of the shell (1), and gaps exist between the plurality of partitions.
4. The grinding structure according to claim 3, wherein: A plurality of the partitions form an angle with the tangent direction of the shell (1).
5. The grinding structure according to claim 4, characterized in that: The degree of the angle is 45°-90°.
6. The grinding structure according to claim 2, characterized in that: The grinding assembly (4) comprises a plurality of ribs.
7. The grinding structure according to claim 6, characterized in that: The ribs are vertically connected to the shell (1), are parallel to the axial direction in the length direction, and are in a corrugated shape.
8. The grinding structure according to claim 6, wherein: The side of the rib away from the shell (1) is a curved surface.
9. The grinding structure according to claim 1, wherein: The grinding media (2) are a plurality of grinding balls with the same or different diameters.
10. The grinding structure according to claim 9, characterized in that: The grinding balls are designed to have three sizes: large, medium and small. The large balls have a size of 10-15 mm, the medium balls have a size of 5-10 mm and the small balls have a size of 1-5 mm.