Modular Sorting Units for Material Recovery Facility Efficiency
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Solution Overview
Problem
Current material recovery facilities (MRFs) face challenges in achieving financially viable recirculation of materials due to inefficient machinery and operational paradigms, resulting in the capture of only 50-80% of the total value of recyclables, and require expensive and difficult-to-maintain multi-level structures to sort materials effectively.
Innovation Solution
The implementation of modular sorting units within a material recovery facility, each comprising a conveyor device, object recognition device, sorting control device, and sorting device, allows for efficient and flexible sorting of materials. These modular units can be angled to create height differentials between conveyor devices, enabling sorting on the same plane while increasing recovery rates and purity levels of recovered materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional multi-level structures are used to create height differentials for sorting, then materials can be sorted effectively, but the facility becomes expensive and difficult to maintain
Solution Approach 1:
The facility is divided into multiple modular sorting units, each capable of independent operation. Each module contains its own conveyor and sorting components, allowing the system to achieve complex sorting functionality through simple, maintainable modules rather than a single complex multi-level structure
Solution Approach 2:
Instead of using vertical multi-level structures to create height differentials, the patent uses angled conveyor devices that create height differentials within a horizontal plane. The conveyors are angled relative to the surface, allowing items to be propelled upward and then fall back down onto the same plane, eliminating the need for expensive multi-level construction
2Productivity
If conventional machinery and operational paradigms are used, then facilities can operate, but they only capture 50-80% of the total value of recyclables
Solution Approach 1:
The system continuously recirculates items that have not yet been sorted through the same sorting line multiple times. This continuous action ensures that valuable materials are not missed and maximizes the capture of recyclable value, as items receive multiple sorting opportunities rather than a single pass
Solution Approach 2:
The system uses object recognition devices to identify items and sorting control devices to make real-time decisions about which items to remove. This feedback loop allows the system to learn and adapt, continuously improving its ability to capture valuable recyclables by identifying patterns and optimizing sorting decisions
3Device complexity
If modular sorting units with angled conveyors are used to create height differentials on the same plane, then facility cost and complexity are reduced, but multiple passes through sorting devices are required to achieve high recovery rates
Solution Approach 1:
While items do require multiple passes through the sorting devices to achieve high recovery rates, the recirculation is continuous and streamlined. Items that are not sorted on one pass automatically return to the beginning of the conveyor without interruption, maintaining continuous flow and minimizing idle time despite the multiple sorting opportunities required
Data Source
AI summary
An efficient material recovery facility is disclosed, including: a first sorting device configured to: process a first instruction to remove a first target item from a set of items; and in response to the first instruction, perform a first sorting action to remove the first target item from the set of items, wherein the set of items excluding at least the first target item is to be transported towards a second sorting device, wherein the second sorting device is associated with a same sorting device type as the first sorting device; and wherein the second sorting device is configured to perform a second sorting action to remove a second target item from the set of items excluding at least the first target item in response to receiving a second instruction to remove the second target item.