Agitator Ball Mill Cage Segmentation for Grinding Efficiency
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Solution Overview
Problem
Existing agitator ball mill technologies face challenges in efficiently grinding dry or non-dry substances into very fine material while ensuring reliable and economical operation, particularly in managing the flow and cleaning of materials and auxiliary grinding bodies.
Innovation Solution
The agitator ball mill design includes a grinding container with an agitator shaft, cages at the inlet and outlet, and a sieve in the outlet area, utilizing air or inert gases as a carrier medium, and a cleaning device with adjustable inclination of grinding elements to optimize material and auxiliary grinding body guidance, and a rotatable cleaning device for efficient material transport and sieving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the grinding container is filled with auxiliary grinding bodies and equipped with an agitator shaft for grinding materials, then the grinding efficiency is improved, but the complexity of managing material flow and preventing auxiliary grinding bodies from reaching the outlet increases
Solution Approach 1:
The outlet area is segmented into a grinding chamber section and a discharge section by a cage structure. The cage divides the outlet area such that the discharge section is separated from the main grinding zone, allowing auxiliary grinding bodies to be retained in the grinding chamber while ground material passes through the sieve in the discharge section.
Solution Approach 2:
A cage structure acts as an intermediary element between the grinding chamber and the outlet. This cage serves as a mediator that selectively allows ground material to pass through while blocking auxiliary grinding bodies from reaching the outlet, thus simplifying the management of material flow.
2Manufacturing precision
If a sieve is installed in the outlet area to separate ground material from auxiliary grinding bodies, then the separation efficiency is improved, but the risk of auxiliary grinding bodies reaching the sieve and causing damage or clogging increases
Solution Approach 1:
The outlet area is divided into a grinding chamber section and a discharge section by a cage structure. The cage divides the outlet area such that the discharge section is separated from the main grinding zone, allowing auxiliary grinding bodies to be retained in the grinding chamber while ground material passes through the sieve in the discharge section.
Solution Approach 2:
A cage structure acts as an intermediary element between the grinding chamber and the outlet. This cage serves as a mediator that selectively allows ground material to pass through while blocking auxiliary grinding bodies from reaching the outlet, thus simplifying the management of material flow.
3Productivity
If the agitator shaft is positioned centrally in the grinding container for optimal grinding action, then the grinding performance is improved, but the guidance of material and auxiliary grinding bodies to the center becomes more difficult
Solution Approach 1:
Grinding elements are provided on the agitator shaft that perform the preliminary action of guiding and transporting both the material to be ground and the auxiliary grinding bodies toward the center of the grinding container before the actual grinding action occurs. This preliminary guidance facilitates the central positioning required for optimal grinding performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves efficient grinding and reliable operation by ensuring precise guidance and cleaning of materials and auxiliary grinding bodies, enhancing the grinding process efficiency and preventing auxiliary grinding bodies from reaching the sieve, thus maintaining the mill's performance and reducing operational complexity.
Implementation Method 1
The added air is used as a carrier medium for transporting the material or the ground material in the agitator ball mill
Implementation Method 2
A cleaning device is arranged in the center of the sieve, with which ground material located on the outside of the sieve can be removed from the sieve
Data Source
Figure 1
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AI summary
The stirring ball mill (10) according to the invention for milling dry or non-dry substances is provided with a milling container (12). The milling container (12) is provided with an inlet (14) for the material to be milled, a fluid inlet (18), and a material outlet (16), wherein the outlet area (20) is provided with a strainer (24). A stirring shaft (26), on which a plurality of milling elements (28, 28a, 28b) are arranged, extends in the center or near the center of the milling container (12). The milling container (12) is at least partially filled with milling aid elements (30). A first cage (38) is associated with the inlet area (16) of the stirring ball mill (10), and a second cage (40) is associated with the outlet area (20).