Reverse Vending Compactor with Replaceable Bladed Parts
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Solution Overview
Problem
Reverse vending machines face high maintenance costs and downtime due to damage from inappropriate objects inserted into the compactor, which can break the blades and require replacing the entire compactor, and existing sensors are not 100% accurate, allowing inappropriate objects to damage the compactor.
Innovation Solution
A compactor design with user-releasable bladed parts mounted to a carrier, allowing individual replacement of damaged blades without replacing the drive shaft or entire compactor, using materials harder than aluminum and geometrically simple blades to reduce damage, and incorporating sensors for additional protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire compactor is replaced when blades are damaged, then the compactor can be restored to full functionality, but the maintenance cost and downtime increase significantly
Solution Approach 1:
The compactor is divided into modular components: the drive shaft, carrier, and bladed part are separate replaceable elements. When blades are damaged, only the bladed part needs to be replaced rather than the entire compactor, significantly reducing downtime and maintenance costs.
Solution Approach 2:
The bladed part is designed as a disposable component that can be quickly replaced when damaged. The expensive drive shaft and carrier are recovered and reused, while only the cheaper bladed part is discarded and replaced, optimizing resource utilization.
2Reliability
If highly accurate sensors are used to detect inappropriate objects, then the protection against compactor damage improves, but the cost of the reverse vending machine increases
Solution Approach 1:
The modular bladed part design acts as a preliminary protective measure. Even if sensors fail to detect inappropriate objects, the damage is limited to the replaceable bladed part rather than the entire compactor, providing a cushion against catastrophic failures.
Solution Approach 2:
The bladed part is designed as a cheap, replaceable component that can withstand occasional damage from inappropriate objects. This disposable element protects the more expensive sensor system and drive mechanism from damage.
3Strength
If the bladed part is permanently fixed to the carrier, then the structural integrity is maximized, but the ease of replacement decreases
Solution Approach 1:
The mounting system transitions from a static permanent fix to a dynamic releasable connection. The bladed part can be firmly mounted during operation for structural integrity, but can be quickly released and replaced when needed, providing both strength and ease of repair.
Data Source
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AI summary
Aspects relate to a compactor (200), bladed part (212), carrier (210), and reverse vending machine (100). The compactor (200) comprises a drive shaft (208), a carrier (210) coupled to the drive shaft, and a bladed part (212) releasably mounted to the carrier (210). A further aspect relates to first and second compactors (200A, 200B) having different blade arrangements for their counter-rotatable crusher units (204, 206).