Cylindrical Filter Shaker Assembly for Low-Noise Debris Removal
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Solution Overview
Problem
Filtration systems in mobile surface maintenance machines face challenges in effectively removing debris from filter surfaces, leading to reduced efficiency and increased dust emission.
Innovation Solution
A filtration system incorporating a filter shaker assembly and debris hopper, utilizing a cylindrical pleated media filter, which periodically shakes off loosened dust and debris into a hopper, ensuring continuous cleaning and minimizing dust escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional filter system is used without active cleaning, then the device complexity is reduced, but the filter surface accumulates debris leading to reduced filtration efficiency and increased dust emission
Solution Approach 1:
The filter shaker assembly employs an unbalanced motor that generates radial vibration through an eccentric weight, causing the filter element to oscillate and shake off accumulated debris. This mechanical vibration mechanism continuously cleans the filter surface without requiring manual intervention or complex additional systems, thereby maintaining high filtration efficiency while adding minimal device complexity.
Solution Approach 2:
The filter cleaning system is designed to be self-service, where the filter element cleans itself through vibration-induced shaking. The debris removal process does not require external cleaning agents, water, or manual intervention, allowing the filter to maintain its own performance automatically during operation.
2Reliability
If a filter cleaning system is implemented, then debris removal effectiveness is improved, but the device complexity and noise increase
Solution Approach 1:
The unbalanced motor incorporates an eccentric weight that acts as a counterbalance mechanism, generating controlled radial vibration. This design allows the system to produce sufficient shaking force for effective debris removal while managing the noise through balanced mechanical design, preventing excessive or chaotic vibrations that would increase noise levels.
3Duration of action of moving object
If continuous filtration is maintained without filter cleaning, then operational continuity is preserved, but filter surface contamination increases leading to reduced airflow and increased energy consumption
Solution Approach 1:
The filter cleaning system operates periodically rather than continuously, with the unbalanced motor activating at intervals to shake off accumulated debris. This periodic action restores airflow through the filter element, preventing the progressive increase in energy consumption that would occur with continuous operation of a contaminated filter, while maintaining operational continuity.
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 system maintains a cleaner operating environment, improves filter durability, and reduces noise by using a balanced radial shaking motion, ensuring efficient debris removal and minimizing dust escape during operations.
Implementation Method 1
an unbalanced motor (40) positioned within a central open interior of the filter (28) and having a shaft (74) extending along a centerline of the filter (28) and having a pair of eccentric weights (46, 48) mounted to the shaft (74) for generating radial vibration of a filter (28)
Implementation Method 2
a filter element surrounded with a perforated metal sleeve
Data Source
AI summary
A filter shaking assembly for a floor surface maintenance machine including a filter assembly in fluid communication with the debris hopper and having a cylindrical filter held against a shaker plate. The shaker plate is vibrated by a shaker motor at least partially positioned within an interior of the filter and eccentric mass to remove an accumulation of debris from the surface of the filter. The eccentric mass may include two eccentric masses positioned on a common shaft of the shaker motor.