Multi-Chamber Bunker for Transverse Material Variation
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Solution Overview
Problem
Existing methods for producing chipboard and dewatering materials like coal lack the ability to easily create variations in physical and chemical properties across the width of the material, leading to suboptimal strength, weight, and thickness distribution, as well as issues with material crumbling during the pressing process.
Innovation Solution
A device with multiple chambers in the bunker, allowing for different physical or chemical properties of spreadable material across the width, and the use of a continuous press with heated plates and circulating steel belts for applying pressure and heat, enabling the creation of mats with varying densities and chemical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If spreading devices with valves or spreading rollers are used to distribute material evenly or deliberately unevenly over the width, then transverse profile adjustments can be made, but the method becomes complex and depends heavily on material consistency
Solution Approach 1:
The bunker is divided into multiple chambers (at least three chambers: first, second, and third chambers) that can be filled with different spreadable materials or the same material in different physical forms. Each chamber has its own scattering device that can be independently controlled, allowing simple transverse profile adjustment by varying material distribution from different chambers without complex valve or roller mechanisms
Solution Approach 2:
Different chambers can be filled with spreadable materials having different physical properties (particle size, density, moisture content) or chemical properties (different binders or additives). This allows local variation in material properties across the width of the conveyed material, enabling transverse profile adjustment through material selection rather than complex mechanical adjustment
2Ease of manufacture
If uniform material is used across the entire width, then the process is simple, but it is impossible to create variations in density, strength, or other properties across the width
Solution Approach 1:
The bunker is segmented into multiple chambers that can be independently filled with different materials. This segmentation allows the system to maintain simplicity in operation (each chamber operates independently with its own scattering device) while achieving versatility in the final product through selective material placement across different width positions
Solution Approach 2:
The system enables creation of composite material structures by combining different spreadable materials (with different physical or chemical properties) in specific spatial arrangements across the width. The scattering devices from multiple chambers deposit materials that form a composite mat with varying properties across the transverse direction
3Ease of manufacture
If edge chambers are not provided with stabilizing additives, then the pressing process is simpler, but the mat of grit crumbles at the edges causing pressing pressure to escape and dewatering to fail
Solution Approach 1:
The first and third chambers (edge chambers) can be filled with spreadable materials having different physical properties compared to the second chamber. Specifically, the edge chambers can contain materials with higher stability or binding properties to prevent crumbling during pressing, while the central chamber contains the main material to be processed. This local differentiation ensures edge stability without complicating the overall pressing process
Solution Approach 2:
The scatterable materials from the edge chambers act as intermediary stabilizing layers that prevent the main material mat from crumbling at the edges during pressing. These intermediary materials bridge the gap between the main material and the press, ensuring proper pressure distribution and preventing edge failure
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 approach allows for more precise control over the strength, weight, and thickness of chipboard panels and prevents material crumbling during dewatering, enabling efficient production and processing with reduced material costs.
Implementation Method 1
a device for loading the supplied spreadable material is dewatered and formed into an end product with pressure and heat
Implementation Method 2
a device for loading the supplied spreadable material is dewatered and formed into an end product with pressure and heat
Implementation Method 3
moisture is evaporated by the heat supply
Data Source
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AI summary
The invention relates to a device for treating granular material (21, 22) by means of pressure and heat, comprising a) at least one hopper for storing the granular material (21, 22), b) a spreading device for metered dispensing of the granular material (21, 22) from the hopper, c) a conveyor belt onto which the granular material (21, 22) can be spread, and d) a device for applying pressure and heat to the granular material (21, 22) supplied via the conveyor belt in a conveying direction (19), characterized in that the hopper (12) has several chambers (20.1, 20.2, 20.3) transversely to the conveying direction, which can be filled with granular material (21, 22) with different physical or chemical properties. In order to easily give the spreading mat different physical and/or chemical properties in the cross-section, it is proposed that the bunker (12) have several chambers (20.1, 20.2, 20.1) perpendicular to the conveying direction.3) which can be filled with free-flowing material (21, 22) that differs in its physical or chemical properties.