Modular Rotor Blade Assembly for Fast Wear-Part Replacement
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Solution Overview
Problem
Existing milling machines with impact rotor mills require frequent replacement of the entire rotor blade assembly due to wear, leading to excessive machine downtime and reduced production rates.
Innovation Solution
A modular rotor blade assembly with replaceable rotor blades, comprising a base plate, cover plates, wedges, and rotor blades, allows for the replacement of individual components without replacing the entire assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire rotor blade assembly is replaced due to wear, then the reliability of the milling machine is maintained, but the machine downtime increases significantly
Solution Approach 1:
The rotor blade assembly is divided into modular segments including a base plate, multiple rotor blades, and cover plates. Each rotor blade can be independently removed and replaced by accessing it through openings in the cover plates, allowing partial replacement without replacing the entire assembly. This segmentation enables maintenance of reliability while minimizing downtime by replacing only worn components.
2Reliability
If the entire rotor blade assembly is replaced, then worn components are renewed, but the production rate deteriorates due to excessive downtime
Solution Approach 1:
The assembly is segmented into independently replaceable rotor blades mounted on a reusable base plate. The cover plates with openings provide access to individual blades for quick replacement. This allows renewal of worn components while maintaining high production rates by minimizing interruption time.
Solution Approach 2:
Multiple rotor blades are pre-mounted on the base plate during assembly. When one blade wears, it can be quickly replaced by removing the cover plate and swapping the blade, without needing to disassemble the entire assembly or wait for complete wear of all blades. This preliminary arrangement of replaceable components maintains productivity.
3Loss of time
If a modular design with replaceable blades is implemented, then machine downtime is reduced, but the device complexity increases
Solution Approach 1:
The rotor blade assembly is segmented into a base plate, multiple rotor blades, and cover plates with openings. This modular structure allows individual blade replacement through the openings, reducing downtime. The segmentation is designed to be straightforward, with blades accessible through openings in the cover plates, balancing complexity with maintenance efficiency.
4Ease of manufacture
If individual rotor blades are made replaceable, then component wear is addressed selectively, but the manufacturing complexity increases
Solution Approach 1:
The assembly is designed with a base plate that has slots for receiving rotor blades, and cover plates with openings that provide access to the blades. This segmentation enables easy maintenance by allowing individual blade removal and replacement without complex disassembly. The standardized interface between blades and base plate simplifies the manufacturing process while maintaining ease of maintenance.
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 modular design reduces machine downtime and increases production efficiency by enabling the replacement of worn components without halting the entire machine, thus maintaining a consistent production rate.
Implementation Method 1
A wedge is disposed within a slot formed in a perimeter of the base plate
Implementation Method 2
A wedge is disposed within a slot formed in a perimeter of the base plate; and a rotor blade attached to the wedge
Implementation Method 3
The rotor turning at a high speed 'sucks' the product and projects the product towards the output, then it passes through the rotating rotor blade assembly
Data Source
AI summary
A modular rotor blade assembly includes a pair of cover plates; a base plate disposed between the pair of cover plates; a wedge disposed within a slot formed in a perimeter of the base plate; and a rotor blade attached to the wedge. One or more cover plates and/or the rotor blade with corresponding wedge are capable of being replaced without the need to replace the base plate, thereby reducing the cost or replacing the entire rotor blade assembly.