Separation device and fiber body deposition apparatus
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Solution Overview
Problem
Existing separation devices face challenges in efficiently supplying and collecting granular materials due to potential dispersion issues caused by air flow rates, leading to unsatisfactory material supply and collection processes.
Innovation Solution
A separation device with a movable mesh and a configuration of ejection and suction units, where the flow rate of gas from the first ejection unit is less than the first suction unit, and the flow rate of gas from the second ejection unit is less than the second suction unit, ensuring controlled supply and collection of materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high flow rate air is used for ejection, then material can be supplied onto the mesh, but material dispersion occurs
Solution Approach 1:
The patent applies parameter changes by precisely controlling the air flow rate ratio between ejection and suction units. The suction flow rate is set to be greater than the ejection flow rate, creating a controlled flow field that prevents material dispersion while ensuring complete material collection and supply onto the mesh.
2Productivity
If high flow rate air is used for suction, then material collection is improved, but material may be dispersed
Solution Approach 1:
The patent applies local quality by creating different flow field characteristics in different spatial zones. The suction unit generates a localized strong suction field near the mesh to ensure complete material collection, while the overall flow rate balance prevents excessive dispersion. This spatially differentiated flow control optimizes both collection efficiency and material uniformity.
3Device complexity
If simple ejection and suction configuration is used, then device complexity is reduced, but material supply and collection cannot be satisfied
Solution Approach 1:
The patent applies pneumatics by using controlled air flow through strategically positioned ejection and suction units. The system utilizes pneumatic pressure differential to achieve reliable material supply onto the mesh and complete collection, demonstrating that fluid dynamic control can effectively replace more complex mechanical material handling mechanisms.
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 configuration effectively prevents material dispersion, ensuring satisfactory supply and selection of fibers and removal of foreign matter, resulting in improved collection and reduced yield loss, enabling the production of high-quality sheets.
Implementation Method 1
a first ejection unit that ejects material containing fiber together with gas and supplies the material onto the first surface of the mesh
Implementation Method 2
a first suction unit that is provided on the second surface side of the mesh and sucks a part of the material supplied onto the first surface together with gas
Implementation Method 3
a second ejection unit that is provided on the second surface side of the mesh, is disposed downstream in a movement direction of the mesh with respect to the first suction unit, and ejects gas toward the second surface
Implementation Method 4
a second suction unit that is provided on the first surface side of the mesh and sucks and collects the material that does not pass through the mesh by the first suction unit and remains on the first surface
Data Source
AI summary
A separation device includes a first ejection unit that ejects a material containing a fiber together with gas and supplies the material onto a first surface of the mesh, a first suction unit that sucks a part of the material supplied onto the first surface, a second ejection unit that ejects gas toward a second surface, and a second suction unit that sucks and collects, the material that does not pass through the mesh by the first suction unit and remains on the first surface. Q1<Q2 and Q3<Q4, where a flow rate of gas ejected from the first ejection unit is Q1, a flow rate of gas sucked by the first suction unit is Q2, a flow rate of gas ejected from the second ejection unit is Q3, and a flow rate of gas sucked by the second suction unit is Q4.