Rotating Extraction Shaft for Coilable Waste Contaminant Removal
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Solution Overview
Problem
Existing waste sorting plants face issues with elongated, coilable objects like ropes, belts, and bags wrapping around rotating parts, leading to blockages and damage, which negatively affect the sorting process efficiency.
Innovation Solution
An extraction device with a rotatable extraction shaft and transverse fingers is integrated into the waste sorting plant to entangle and remove these contaminants, featuring a detachable design for easy replacement and adjustable positioning to enhance separation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional waste sorting plants use rotating parts for material handling, then material transport and processing are enabled, but elongated and coilable objects wrap around these parts causing blockages and damage
Solution Approach 1:
The invention extracts and removes interfering materials (elongated and coilable objects) from the waste stream before they can reach and wrap around rotating parts. The extraction device with rotating shaft and fingers actively pulls these contaminants out of the material flow, preventing them from causing blockages and damage to subsequent processing equipment.
Solution Approach 2:
The extraction device performs preliminary removal of interfering materials at an early stage in the waste sorting process, before the materials reach rotating components. By detecting and extracting these objects upfront, the system prevents potential blockages and damage before they occur, ensuring continuous reliable operation.
2Reliability
If extraction device is installed to remove interfering materials, then blockages are prevented, but device complexity increases
Solution Approach 1:
The extraction device is segmented into modular components: a rotating shaft with multiple fingers, a drive mechanism, and an extraction housing. This segmentation allows the device to be integrated into existing waste sorting plants as a discrete unit, minimizing overall system complexity while effectively removing interfering materials.
3Ease of repair
If extraction shaft is made detachable for easy replacement, then maintenance ease is improved, but connection reliability may be reduced
Solution Approach 1:
The extraction shaft is designed as a detachable, segmented component that can be easily removed and replaced. The shaft consists of multiple sections that can be disconnected at connection points, allowing rapid maintenance without requiring complete shaft replacement, thus improving ease of repair while maintaining connection reliability through proper joining mechanisms.
Data Source
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AI summary
The invention relates to an extraction device 1 for sorting out strip-shaped, ribbon-shaped, or at least coilable waste (contaminants) from a waste stream comprising wood. The waste stream passes from a preliminary stage into an extraction chamber 2 defined by the extraction device 1. According to the invention, the extraction device 1 comprises an extraction shaft 2 extending transversely through the extraction chamber 2 along a longitudinal axis, having shaft ends spaced apart from one another, and several extraction fingers 6.1 extending substantially transversely to the longitudinal axis of the shaft. The extraction shaft 6 is rotatably mounted in an extraction housing 4, which preferably encloses the extraction chamber 2 completely on all sides. Furthermore, at least one of the shaft ends of the extraction shaft 6 is driven by a drive mechanism.