Foreign Substance Removal from Highly Adhesive Powder via Mesh Vibration
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Solution Overview
Problem
Existing methods struggle to effectively remove foreign substance particles from highly adhesive powders as agglomerates form, making it difficult to expose and detect these particles.
Innovation Solution
A foreign substance removing device that includes a substrate with a classification unit equipped with a classification mesh, a vibration unit, and a pressing unit to de-agglomerate and classify highly adhesive powders, exposing foreign substance particles for detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vibration is applied to powder to form a thin layer, then foreign substance particles can be exposed on the surface for detection, but highly adhesive powder forms agglomerates that prevent effective exposure of foreign substance particles
Solution Approach 1:
The patent applies mechanical vibration through a vibration unit that vibrates the substrate or classification mesh at high frequency. This vibration breaks down agglomerates of highly adhesive powder, allowing foreign substance particles to be exposed on the surface for detection by the imaging unit, thus resolving the contradiction between maintaining powder integrity and achieving particle exposure.
Solution Approach 2:
The patent segments the powder processing into distinct functional zones: a classification unit with a classification mesh that separates powder from foreign substances, and a detection unit with an imaging unit. This segmentation allows different physical processes (vibration for de-agglomeration, gravity for classification, imaging for detection) to occur in sequence, effectively handling highly adhesive powders.
2Productivity
If a classification mesh is used to separate powder from foreign substances, then foreign substances can be removed, but highly adhesive powder agglomerates prevent proper classification
Solution Approach 1:
The vibration unit is positioned to vibrate the substrate or classification mesh during the classification process. This continuous vibration prevents highly adhesive powder from forming stable agglomerates, ensuring that the classification mesh can effectively separate foreign substances from powder particles, thereby maintaining both productivity and classification accuracy.
Solution Approach 2:
The system performs preliminary de-agglomeration through vibration before the powder reaches the classification mesh. This preliminary action breaks down agglomerates in advance, ensuring that when the powder encounters the classification mesh, individual particles can be properly separated from foreign substances, improving classification reliability.
3Stability of the object's composition
If only vibration is applied to powder, then powder can be fluidized, but highly adhesive powder maintains agglomerate structure
Solution Approach 1:
The patent employs mechanical vibration at specific frequencies and amplitudes that are sufficient to break down agglomerates of highly adhesive powder while still maintaining powder fluidization. The vibration unit is designed to deliver controlled vibrational energy that exceeds the adhesive forces holding agglomerates together, achieving both fluidization and de-agglomeration simultaneously.
Solution Approach 2:
The system adjusts vibration parameters (frequency, amplitude, duration) to optimize the balance between fluidization and de-agglomeration. By changing these parameters, the system can adapt to different powder characteristics, ensuring effective breakdown of highly adhesive agglomerates while maintaining the fluidized state necessary for classification.
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
The device effectively de-agglomerates and classifies highly adhesive powders, allowing for reliable detection and removal of foreign substance particles.
Implementation Method 1
a vibration unit that vibrates the substrate and/or the classification mesh
Implementation Method 2
a pressing unit that presses the classification mesh against the powder
Data Source
Figure 1
Figure 2~3A
Figure 3B~4
AI summary
An object of the invention is to provide a foreign substance removing device that is effective even for highly adhesive powder. Therefore, the foreign substance removing device of the invention includes: a substrate on which powder is to be placed; and a classification unit configured to classify powder to be collected and a foreign substance particle to be removed. The classification unit includes a classification mesh, a vibration unit that vibrates the substrate and/or the classification mesh, and a pressing unit that presses the classification mesh against the powder. In this way, by pressing the mesh against the powder and vibrating the powder, agglomerates of the powder can be de-agglomerated, a classification can be performed at the same time, and thus a foreign substance can be removed even for highly adhesive powder.