Air-Permeable Conveyor Belt Drying System for Wood Chips
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Solution Overview
Problem
Existing drying devices for particulate materials, such as wooden chips, face challenges with high emissions of fine particulate matter like dust due to varying humidity levels during the drying process, making filtration technically demanding.
Innovation Solution
A device with an air-permeable conveyor belt system where air is supplied above and removed below the belt, with multiple air removal devices and filter devices arranged sequentially, allowing for constant air supply and effective drying, and combining air streams to achieve optimal filtration conditions by adjusting humidity levels before release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air is supplied above and removed below the conveyor belt during drying, then drying effectiveness is improved, but fine particulate matter emissions increase
Solution Approach 1:
The drying system is divided into multiple drying zones along the conveyor belt, with separate air supply and removal devices for each zone. This segmentation allows different air streams to be treated independently in separate filtration systems, enabling targeted filtration without compromising overall drying effectiveness.
Solution Approach 2:
Filter devices are introduced as intermediary components between the air removal devices and the environment. These filters capture fine particulate matter from the air streams before release, acting as a mediator that allows the drying process to continue effectively while preventing harmful emissions.
2Stability of the object's composition
If multiple air removal devices are used to maintain constant air supply, then drying consistency is improved, but system complexity increases
Solution Approach 1:
The system uses multiple air removal devices positioned at different locations along the conveyor belt, each creating a slight negative pressure in its specific zone. This segmentation maintains consistent air flow through the particulate material across different drying stages without requiring a single complex control system.
Solution Approach 2:
The air removal devices automatically maintain constant air supply through their positioning and operation, creating slight negative pressure that naturally draws air through the material. This self-regulating mechanism maintains drying consistency without requiring complex active control systems.
3Reliability
If air streams with varying humidity are filtered separately, then filtration effectiveness is improved, but device complexity increases
Solution Approach 1:
Different air streams removed from various drying zones are directed to separate filter devices. Each filter handles air with specific humidity characteristics appropriate to its source zone, maintaining high filtration effectiveness for each stream while allowing the overall system to manage complexity through modular organization.
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 solution effectively cleans the drying air before release, reducing dust emissions and ensuring optimal filtration conditions by maintaining consistent humidity for efficient particulate material drying.
Implementation Method 1
the supplied air removes humidity (along with finer particulate matter, such as, e.g., dust) from the particulate matter
Implementation Method 2
As the air passes through the particulate material, the supplied air removes humidity
Implementation Method 3
at least one air-permeable conveyor belt
Data Source
AI summary
A device and method for drying particulate material, especially a wooden particulate material, in which the particulate material is placed on a conveyor belt, and during the conveying course, air is supplied. As the air passes through the particulate material, the supplied air removes humidity (along with finer particulate matter, such as dust) from the particulate matter. Subsequently, the humid air is removed in multiple separate streams and transferred to filter devices.