Separation device and fiber body deposition apparatus
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Solution Overview
Problem
Existing separation devices face challenges in effectively transporting and collecting granular materials due to insufficient suction force, leading to incomplete removal and collection of fibers and foreign matter, especially when the materials remain in place despite rotating belt screens.
Innovation Solution
A separation device with a rotating member featuring a mesh and a protruding member on one surface, combined with a supply unit for fiber materials and a suction unit on the opposite surface, ensures efficient collection by forcibly moving deposited materials along the rotation direction using the protruding member, preventing material stagnation and ensuring smooth transport to collection units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If suction force is increased to improve material collection, then collection efficiency improves, but material may be pulled off the rotating belt before reaching the collection position
Solution Approach 1:
The suction ports are segmented into multiple sections along the rotating belt, with each section having independently controllable suction. This allows suction to be applied at specific locations rather than continuously, preventing premature material removal while maintaining collection efficiency at the appropriate position.
Solution Approach 2:
The suction force is made dynamic and adjustable based on the position of the rotating belt. Suction is activated only when material reaches the appropriate collection position, rather than being continuously applied. This dynamic control ensures material is collected at the correct location without being pulled off prematurely.
2Reliability
If suction force is decreased to maintain material on the belt, then material transport reliability improves, but collection efficiency deteriorates
Solution Approach 1:
The system prepares for material collection in advance by positioning suction ports at optimal locations on the rotating belt before material arrives. This preliminary positioning ensures that when material reaches the collection zone, suction is already ready and properly positioned, maximizing collection efficiency without requiring continuous or excessive suction force.
Solution Approach 2:
The system uses feedback from material detection sensors to control suction activation. When material is detected at a specific position on the rotating belt, suction is activated in response. This feedback mechanism ensures suction is applied only when and where needed, maintaining both transport reliability and collection efficiency.
3Speed
If belt rotation speed is increased to improve material transport, then transport speed improves, but material may not be properly separated or collected
Solution Approach 1:
The system addresses the speed-precision contradiction by introducing a temporal dimension through synchronized control. The suction activation is synchronized with the belt rotation phase, creating a time-based coordination system. This allows high-speed transport while maintaining separation precision through phase-synchronized suction activation at specific rotational positions.
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 solution enables effective removal and collection of fibers and foreign matter, preventing material stagnation and ensuring high-quality sheet manufacturing by ensuring smooth transport and collection regardless of suction force strength.
Implementation Method 1
a suction unit that is provided on the second surface side of the mesh and configured to suck a part of the material supplied onto the first surface
Data Source
AI summary
A separation device includes a rotating member that has a mesh having a first surface and a second surface in a front and back relationship and a protruding member provided on the first surface side of the mesh, a supply unit that supplies a material containing a fiber onto the first surface of the mesh, a suction unit that is provided on the second surface side of the mesh and configured to suck a part of the material supplied onto the first surface, and a collection unit that collects the material deposited on the first surface.