Plant Processing Apparatus On-Site Inactivation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Invasive plant species like Japanese knotweed pose challenges in landscape maintenance due to their ability to regrow from small residues, leading to uncontrolled growth and environmental issues, as existing methods for removing and processing these plants are inefficient and environmentally harmful.
Innovation Solution
A plant processing apparatus that inactivates plant material through a multi-step process involving cutting, pressing, and milling, ensuring the material cannot regrow, allowing for on-site disposal and reducing transportation costs and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plant material is transported to another location for destruction, then the risk of spread is reduced, but transportation costs and environmental impact increase
Solution Approach 1:
The plant material is inactivated at the very location where it is removed, before any transportation could occur. The processing apparatus performs cutting, pressing, and milling operations on-site, destroying the regenerative capacity of invasive plants immediately at the source, thus eliminating the need for subsequent transport while preventing spread.
Solution Approach 2:
The system processes and inactivates the plant material itself at the location of removal, making the destruction process self-contained and independent of external transportation infrastructure. The apparatus transforms the raw plant material into inactive compost directly where it is needed, eliminating dependency on external destruction facilities.
2Device complexity
If plant material is not thoroughly inactivated, then processing is simpler, but the material can regrow and spread to new locations
Solution Approach 1:
The inactivation process is divided into three distinct sequential stages: cutting (reducing plant material to small pieces), pressing (applying mechanical pressure to destroy cellular structure), and milling (further grinding into fine particles). Each stage contributes specifically to destroying the regenerative capacity, ensuring thorough inactivation while maintaining process clarity and manageability.
Solution Approach 2:
The system applies progressively more intense mechanical parameters to the plant material: first cutting forces, then pressing pressure, and finally milling forces. This progressive parameter escalation ensures complete destruction of the plant material's regenerative capacity without requiring overly complex equipment, as each parameter change builds upon the previous one.
3Reliability
If plant material is finely ground to ensure inactivation, then regrowth is prevented, but processing time and energy increase
Solution Approach 1:
The cutting, pressing, and milling operations are performed in continuous sequence without interruption or intermediate handling steps. The plant material flows continuously through the processing apparatus, receiving successive mechanical actions that progressively reduce it to fine inactive particles, maximizing inactivation effectiveness while minimizing total processing time.
Solution Approach 2:
The three inactivation stages (cutting, pressing, milling) are merged into a single integrated processing flow within one apparatus. Rather than performing these operations separately with intermediate handling, the system combines them into one continuous operation, reducing processing time while achieving thorough inactivation through the cumulative effect of all three actions.
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 apparatus effectively inactivates plant material, preventing further growth and reducing the spread of invasive species, while being versatile for various plant types and conditions, thus minimizing transportation and environmental harm.
Implementation Method 1
at least one first cutting element moves along the at least one second cutting element when the shaft rotates about its longitudinal axis in order to cut the plant material between the two
Implementation Method 2
transporting the ground plant material toward the pressing plate and thereby pressing the ground plant material, extruding the ground and pressed plant material through the perforations of the pressing plate
Implementation Method 3
once again grinding up the ground, pressed and extruded plant material by means of a milling cutter
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
Plant processing apparatus for inactivating plant material, comprising a housing with infeed opening for infeed of plant material into a processing compartment of the housing; an elongate shaft placed in the processing compartment of the housing for rotation about its longitudinal axis; at least one first cutting element extending from the shaft in radial direction and rotatable together with the shaft about its longitudinal axis; at least one second cutting element which is connected statically to the housing in the processing compartment, wherein at least one of the at least one first cutting element moves along the at least one second cutting element when the shaft rotates about its longitudinal axis in order to cut the plant material between the two; a pressing plate with perforations which is arranged in the processing compartment at an outfeed end of the shaft and is placed substantially perpendicularly of the longitudinal axis thereof; and a milling cutter with at least one third cutting element which is rotatable about a rotation axis, wherein the milling cutter is disposed on a side of the pressing plate remote from the shaft, wherein the processed plant material is guided from the milling cutter to an outfeed opening of the housing for outfeed thereof.