Fibrous Straw Compaction via Torque-Feedback Additive Control
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Solution Overview
Problem
Existing devices for compacting fibrous crops into pellets lack the ability to reliably produce pellets of consistent quality due to uncertainties in moisture content and resulting strength, which affects their application-specific strength.
Innovation Solution
A device with a control and regulation system that uses sensors to monitor torque, forces, and conveying parameters during the compacting process, allowing for the precise addition of additives like water, molasses, or vegetable oils to achieve desired pellet strength by adjusting specific energy consumption and process parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If moisture content measurement and humidification/drying treatment are used to achieve predetermined moisture content before pelleting, then the moisture content can be controlled, but the actual quality (strength) of the pellets cannot be reliably ensured
Solution Approach 1:
The control and regulating device continuously monitors process parameters (torque, forces, conveying parameters) during compaction and automatically adjusts additive application rates and conveying quantities based on real-time feedback, creating a closed-loop control system that directly links process parameters to pellet strength quality
Solution Approach 2:
The invention transitions from controlling only moisture content to controlling multiple process parameters including torque, forces on press drums, conveying parameters, and additive application rates, allowing direct optimization of pellet strength through comprehensive parameter management
2Manufacturing precision
If additive application is increased to improve pellet strength, then pellet quality improves, but energy consumption and process complexity increase
Solution Approach 1:
The control system automatically regulates additive application and conveying parameters based on real-time process parameter monitoring, enabling the system to self-adjust and optimize pellet strength without manual intervention while managing complexity through automation
3Manufacturing precision
If specific energy consumption is increased to improve compaction quality, then pellet strength improves, but energy efficiency deteriorates
Solution Approach 1:
The invention optimizes the relationship between drive power, conveying parameters, and additive application to achieve desired compaction quality at minimum energy consumption by dynamically adjusting multiple parameters rather than simply increasing energy input
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
Enables the production of pellets with consistent strength by controlling friction behavior and ensuring permanent sticking of stalks, allowing for adaptable pellet quality based on specific energy consumption and additive application, optimizing the compacting process for different uses.
Implementation Method 1
a device for compacting fibrous straw material such as grass, hay, straw, or similar biomass
Implementation Method 2
a drive arrangement for driving the press drums and further devices for supplying the straw material to the press drums
Implementation Method 3
the at least one sensor for detecting at least one process parameter of the compaction process is designed to detect the forces and/or torques prevailing on the press drums during the compaction process
Implementation Method 4
a device for adding additives to the straw material flowing towards the feed hopper... ensuring permanent sticking of stalks
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Device (1) for compacting fibrous straw material, comprising at least one pair of press drums (6, 7) which converge in opposite directions to form a feed hopper (9) for the straw material, into which a conveyor for the straw material to be fed opens, a drive arrangement (10) for driving the press drums (6, 7), a device (16) for adding additives, and a control and regulating device (22) which is connected to at least one sensor for detecting process parameters of the compaction process, wherein the at least one sensor (S1, S2, S3) for detecting at least one process parameter of the compaction process is configured to detect the forces and/or torques prevailing on the press drums (6, 7) during the compaction process, and wherein the forces and/or torques prevailing on the press drums (6, 7) during the compaction process are7) prevailing forces and/or torques can be used as a control variable to change conveying parameters of the device (16) for adding additives and/or as a control variable to change the conveying quantity of the straw flow towards the feed hopper (9),