Absorbent Fiber Separation Device with Vertical Discharge
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Solution Overview
Problem
Existing separating devices for liquid absorbent fibers from absorbent articles, such as disposable diapers, face inefficiencies in purifying pulp fibers due to insufficient opening performance, leading to impurities like SAP being buried within the fibers, resulting in decreased purity of collected pulp fibers.
Innovation Solution
A separating device with a rotation member that rotates around a center axis aligned from the insertion port to the discharge port, featuring protruding sections that intersect with the axis, and a regulating member between the ports to extend holding time and enhance material opening, ensuring pulp fibers are discharged with high purity by repeatedly hitting and agitating the material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the discharge port is positioned immediately next to the insertion port, then the device structure is simplified, but the opening performance deteriorates and impurities remain in the pulp fibers
Solution Approach 1:
The invention changes the spatial arrangement from a horizontal short-distance discharge (PTL 1) to a vertical downward discharge configuration. The discharge port is positioned at the bottom of the case, allowing material to travel vertically through the rotation member's working area, thereby extending the opening path without increasing horizontal device footprint.
Solution Approach 2:
The regulation member is positioned to preliminarily extend the material's holding time in the opening area before discharge. This preliminary action ensures that the material receives sufficient opening treatment from the rotation member protrusions before being discharged, preventing impurities from remaining embedded in the pulp fibers.
2Manufacturing precision
If the holding time of material in the case is extended, then the opening performance is improved, but the device length increases
Solution Approach 1:
The invention transitions from horizontal material transport to vertical material discharge. The case height dimension is utilized to extend the material's residence time in the opening area, avoiding the need to increase the horizontal length of the device while achieving sufficient opening performance.
Solution Approach 2:
The rotation member with its protrusions automatically agitates and opens the material as it passes through the vertical discharge path. The material's own downward movement through the case provides the necessary interaction with the rotation member, eliminating the need for additional external mechanisms to extend holding time.
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 significantly improves the opening performance and purity of collected liquid absorbent fibers by extending the holding time and ensuring thorough separation of impurities, resulting in higher purity pulp fiber collection.
Implementation Method 1
a rotation member (30) housed in the case (20), the rotation member agitating and opening the material; the rotation member rotating around a center axis... featuring protruding sections that protrude outward... repeatedly hitting and agitating the material
Implementation Method 2
an insertion port for inserting the material into the case, while the material is made to ride on an airflow; a discharge port for discharging the liquid absorbent fibers... while the liquid absorbent fibers are made to ride on an airflow
Data Source
AI summary
A separating device separates liquid absorbent fibers from a material including the liquid absorbent fibers of an absorbent article and impurities. The separating device includes: a case; an insertion port for inserting the material into the case on an airflow; a rotation member in the case for agitating and opening the material; and a discharge port for discharging the liquid absorbent fibers from inside the case on an airflow. The rotation member rotates around a center axis from the insertion port to the discharge port, and the rotation member has protruding sections protruding outward in a direction that intersects with the center axis in a plurality of positions in the axial direction. A regulating member is provided in a predetermined position between the insertion port and the discharge port in the case, and the regulating member regulates movement of the material from the insertion port to the discharge port.