Vacuum Waste Collection Branch Sequencing and Dynamic Vacuum Control
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Solution Overview
Problem
Vacuum waste collection systems face challenges in larger and more complex environments, including increased risk of blockages, inefficient resource utilization, and high energy consumption due to conventional emptying methods, which are inflexible and do not optimize waste chute emptying order effectively.
Innovation Solution
A method that successively selects branches for emptying and transport in a sequence where each next branch is at the same or shorter transport distance to the central waste collection point, using waste detectors to ensure waste is transported past intersections, thereby minimizing blockages and optimizing air flow for energy-efficient collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If increased vacuum levels are used to reduce emptying and collection times, then the emptying speed is improved, but the risk of waste compaction and pipe blockage increases
Solution Approach 1:
The system dynamically adjusts vacuum levels based on real-time waste detection. Waste detectors monitor the transport line, and the control system modulates vacuum intensity accordingly - applying higher vacuum when pipes are clear to maintain productivity, and reducing vacuum when waste is detected to prevent compaction and blockages, thus resolving the contradiction between emptying speed and blockage risk
Solution Approach 2:
The system changes the vacuum parameter dynamically during operation. By monitoring waste presence and adjusting vacuum levels in response to detected conditions, the system optimizes the balance between maintaining high emptying productivity and preventing waste compaction that leads to blockages
2Productivity
If increased vacuum levels are applied to improve emptying efficiency, then collection speed is improved, but noise from airflow through waste chute increases
Solution Approach 1:
The system dynamically modulates vacuum levels based on waste detection feedback. When waste is detected in the transport line, the system reduces vacuum intensity to minimize noisy airflow through the waste chute, while maintaining higher vacuum levels when pipes are clear to ensure efficient collection speed
3Loss of time
If high vacuum levels are used to accelerate waste transport, then emptying time is reduced, but access ports may close rapidly causing safety hazards
Solution Approach 1:
The system dynamically adjusts vacuum levels in response to waste detection. When waste is detected near access ports, the system reduces vacuum intensity to prevent rapid port closure that could injure users, while maintaining higher vacuum levels during clear pipe conditions to minimize emptying time
4Productivity
If conventional level-controlled emptying is used in larger systems, then resource utilization may be optimized at certain loads, but frequent jumps between branches occur leading to inefficiency
Solution Approach 1:
The system uses waste detectors to provide real-time feedback on waste presence in different transport lines. This feedback enables the control system to make informed decisions about which branches to service and in what sequence, eliminating the frequent jumps between branches that occur with conventional level-controlled emptying in large systems
Solution Approach 2:
The system performs preliminary waste detection before initiating emptying operations. By detecting waste presence in advance using waste detectors, the system can plan an efficient emptying sequence that minimizes branch jumps and optimizes collection time across the entire network
5Reliability
If predefined structured emptying order is used starting with chutes close to central collection point, then blockage in main pipes is avoided, but collection time increases due to inefficient routing
Solution Approach 1:
The system uses waste detectors to provide real-time feedback on which branches contain waste. Based on this feedback, the control system dynamically determines the optimal emptying sequence, allowing it to service remote branches first when they contain waste, thereby reducing collection time while still preventing blockages through intelligent routing decisions
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
This approach reduces energy consumption, collection time, and ensures reliable operation by minimizing waste left in transport pipes and allowing for efficient downstream transport, reducing the risk of blockages and optimizing resource utilization.
Implementation Method 1
Vacuum waste collection systems operating at sub-atmospheric or vacuum pressure for transport of waste by means of suction of air
Implementation Method 2
Each branch has an air inlet valve at the end of the branch... collectively transport accumulated waste from the selected branches by successively operating the air inlet valves
Implementation Method 3
The transport pipe system includes detector means arranged in the vicinity of the intersections to detect waste in the transport pipe system
Data Source
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AI summary
vacuum waste collection system is provided (la) by successively selecting a number of branches in a sequence for emptying and transport of waste, wherein the intersection (1, 2, 3, 4) of each next branch in the sequence is at the same o shorter transport distance to a central waste collection point (6) compared to the intersection (1, 2, 3, 4) of the previous branch in the sequence, and collectively transporting accumulated waste from the selected branches towards the central waste collection point (6) by successively operating the air inlet valves (avl, av2, av3, av4, av5 ) of the corresponding branches. For each selected branch except the last branch, accumulated waste is transported towards the central collection point (6) by causing the corresponding air inlet valve (avl, av2, av3, av4, av5 ) to be open until it is detected by detector means (WO) in the transport pipe system that the waste has been transported past an intersection (1, 2, 3, 4) to the next branch, and then changing to the next branch For the last branch, accumulated waste is transported to the central waste collection point (6).