Defibration Apparatus Screen Discharge Path Design
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Solution Overview
Problem
In defibration treatment apparatuses, defibrated objects often stagnate on the discharge side due to airflow stagnation between the rotator and the fixed member, leading to inefficiencies in the defibration process.
Innovation Solution
The apparatus includes a rotator with rotary blades and a fixed member with a screen of openings, where the discharge path is designed with a larger cross-sectional area near the discharge opening and is coupled to an air suction path, with an air sending device to enhance airflow and prevent stagnation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional defibration apparatus uses inner blades on a rotator and outer blades on a fixed member to defibrate material, then defibration treatment is performed, but defibrated objects stagnate on the discharge opening side and do not totally pass through
Solution Approach 1:
The fixed member is divided into a screen portion with multiple openings and a discharge path portion. This segmentation allows defibrated objects to be separated and guided through dedicated discharge paths, preventing stagnation at the discharge opening and improving overall discharge efficiency.
Solution Approach 2:
The discharge path is configured to extend in the rotation shaft direction (axial dimension) rather than only in the radial direction. This dimensional change provides an additional pathway for defibrated objects to exit, preventing stagnation and improving discharge performance.
2Productivity
If the discharge path cross-sectional area is increased near the discharge opening, then airflow stagnation is reduced and discharge efficiency improves, but the device complexity increases
Solution Approach 1:
The discharge path cross-sectional area is locally increased only in the region near the discharge opening, while maintaining a smaller area in other regions. This localized modification optimizes airflow and prevents stagnation at the critical discharge point without unnecessarily increasing overall device complexity.
3Productivity
If air suction paths and air sending devices are added to enhance airflow, then stagnation is prevented and discharge is improved, but the device complexity and energy consumption increase
Solution Approach 1:
Air suction paths and air sending devices are introduced to create controlled airflow through the defibration chamber. The air suction path removes stagnant air and the air sending device supplies fresh air, together creating a pneumatic system that prevents stagnation and improves defibration efficiency.
Solution Approach 2:
The air suction path is configured to draw air from regions where stagnation occurs and return it through the air sending device. This creates a feedback loop that continuously monitors and corrects airflow patterns, preventing stagnation while maintaining system efficiency.
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 ensures stable airflow and efficient discharge of defibrated objects, reducing stagnation and improving the overall defibration process efficiency.
Implementation Method 1
an air sending device that sends a gas from the discharge path to the air suction path may be coupled to the discharge path
Implementation Method 2
at least a portion of the fixed member is configured of a screen including a plurality of openings
Data Source
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AI summary
A defibration treatment apparatus including a feeding hole through which a material is fed, a rotator that rotates about a rotational central axis, a fixed member that covers at least a portion of the rotator, and a discharge opening that discharges a defibrated object obtained by defibrating the material between the rotator and the fixed member. In the defibration treatment apparatus, the rotator includes a plurality of rotary blades that extend in directions away from the rotational central axis, at least a portion of the fixed member is configured of a screen including a plurality of openings, the screen is disposed at a position corresponding to an outer rotational circumference of the rotator, and a discharge path in communication with the discharge opening is provided along the screen and on a side opposite the rotator with respect to the screen.