Compactor Augers for Debris Volume Reduction
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Solution Overview
Problem
The bulkiness and weight of trash removed from streams pose challenges in transportation and disposal due to its uncompacted and undewatered state.
Innovation Solution
A compacting apparatus that simultaneously compacts and dewaters debris using a pair of vertically spaced augers with helical vanes driven in opposite directions, applying a combination of forwarding and resistive forces to achieve compaction and dewatering, with optional water spraying for flushing sludge-like materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If trash is removed from streams without compaction, then it can be easily collected and discharged, but its bulkiness and weight make transportation and disposal difficult
Solution Approach 1:
The patent combines the collection, compaction, and dewatering functions into a single integrated apparatus. The augers both convey the trash forward and simultaneously compact it by applying mechanical force, eliminating the need for separate collection and compaction equipment. This merging resolves the contradiction by maintaining ease of operation (single apparatus performs all functions) while reducing the quantity characteristics (compaction reduces bulkiness and weight).
Solution Approach 2:
The compaction process changes the physical parameters of the trash by applying compressive force through the augers and resistive force at the outlet. This transforms the trash from a loose, high-volume state to a dense, low-volume state, directly addressing the bulkiness and weight problem while the apparatus continues to operate continuously without interruption to collection operations.
2Device complexity
If a single auger is used to forward debris, then the structure is simple, but debris may stall the auger when it needs to pass between components
Solution Approach 1:
The patent divides the single auger into two separate augers that operate in parallel. Each auger handles debris independently, and the vertical spacing creates clearance zones where debris can pass without becoming trapped. This segmentation eliminates the stalling problem that would occur with a single auger while maintaining relatively simple structure through the use of identical, modular components.
Solution Approach 2:
The patent adds the vertical dimension by spacing the two augers vertically apart. This creates a three-dimensional arrangement where debris can pass between the augers in the vertical clearance space, preventing stalling that would occur in a two-dimensional single-auger configuration. The vertical spacing transforms the problem from a planar constraint to a spatial solution.
3Force
If the augers are positioned close together to maximize compaction, then compaction force increases, but debris may become trapped between the augers
Solution Approach 1:
The patent applies different spatial relationships to different regions of the system. The augers are positioned close together in the horizontal direction to maximize compaction force through the resistive outlet, while maintaining vertical spacing to prevent debris trapping. This local quality differentiation allows simultaneous optimization of both compaction effectiveness and debris flow continuity without compromise.
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 significantly reduces the volume and weight of debris, making it easier to transport and dispose of, while maintaining self-cleaning capabilities and minimizing the risk of auger stalling.
Implementation Method 1
material forwarding means for forwarding the debris toward an outlet in the housing and applying a positive force on such debris as it moves in a direction to be discharged from the housing
Implementation Method 2
The outlet is so constructed and arranged as to apply a resistive force on the debris as it passes through the outlet, thereby enabling the combination of the debris forwarding force and the resistive force to effect compaction of the debris
Implementation Method 3
the shaft of one of the augers is coupled to a water source so that compacted material arriving at the housing outlet may be sprayed with water so as to enable certain kinds of debris to be flushed
Data Source
AI summary
A compactor for compacting and dewatering debris comprises a housing having an inlet for enabling debris to be delivered to forwarding augers which forward the debris to a compaction chamber at the discharge end of the housing. The chamber has an outlet opening of less cross-sectional area than that of the chamber, thereby ensuring compaction of the debris as it moves toward discharge. Debris enroute to discharge may be sprayed with water to remove sludge-like substances which otherwise would cling to some types of debris.