Segmented Hopper Doors for Small Biomass Baling
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Solution Overview
Problem
Current biomass balers lack an efficient top infeed system to process small-sized woody biomass materials effectively, limiting their operational efficiency and cost-effectiveness in recovering and transporting woody biomass for bioenergy and biofuel applications.
Innovation Solution
A top infeed hopper system with pivotably attached doors featuring fingers and recesses, actuated to form a chute for directing biomass into a baling chamber, allowing for compacted bale formation of cellulosic and woody biomass materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional baling system is used, then large biomass materials can be processed, but small-sized woody biomass materials cannot be effectively processed
Solution Approach 1:
The hopper door is segmented into multiple fingers that can independently move and intermesh with fingers from the opposing door. This segmentation allows the system to handle materials of varying sizes, including small-sized woody biomass, by creating adjustable gaps between fingers while maintaining overall structural integrity for effective processing.
2Ease of operation
If the hopper doors are kept open for loading, then material can be easily introduced, but the infeed opening is exposed and unsafe
Solution Approach 1:
The hopper doors are designed as dynamic structures that can pivot between open and closed positions. During loading, doors remain open for easy material introduction. During operation, doors close and intermesh to cover the infeed opening, protecting operators from exposed moving parts while allowing the platen to pass through the intermeshed fingers.
Solution Approach 2:
The intermeshed fingers of the opposing doors serve as an intermediary protective structure. When closed, they form a protective barrier that covers the infeed opening and shields operators from moving parts, while still permitting the platen to pass through during the baling cycle.
3Object-affected harmful factors
If the fingers of opposing doors are positioned to cover the infeed opening, then operator safety is improved, but material flow may be obstructed
Solution Approach 1:
The hopper doors and fingers are designed to dynamically adjust their position. During the baling cycle, doors close to provide safety coverage. The fingers are positioned and sized to allow the platen to pass through while maintaining protective coverage, thus enabling both safety and material flow.
4Adaptability or versatility
If a top infeed system is added to process small materials, then versatility is improved, but device complexity increases
Solution Approach 1:
The hopper door fingers serve multiple functions: they form the structural boundary of the hopper, create adjustable gaps for different material sizes including small woody biomass, and provide safety coverage when closed. This multi-functionality adds versatility without proportionally increasing complexity.
Solution Approach 2:
The safety protection mechanism is merged with the material handling structure. The same intermeshed fingers that handle materials of various sizes also provide protective coverage when doors are closed, combining two functions into a single structural solution.
Data Source
AI summary
A baler for making compacted bales of a cellulosic biomass material, the baler comprising: a housing defining a compaction chamber therein, wherein the housing comprises a top wall, an infeed opening defined in the top wall for introducing the material into the compaction chamber, and wherein a cutting device is mounted on the housing alongside the infeed opening.