Adjustable Filter Bag Band for Variable Aperture Sealing
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Solution Overview
Problem
Filter bag systems face challenges in achieving consistent dust-tight seals due to variations in hole sizes between and within bag houses, requiring multiple custom-sized filter bags.
Innovation Solution
The implementation of a filter bag with an adjustable band, comprising a perforated metal band and a gasket ring, which can expand or contract to fit variously sized receptacles through plastic and elastic deformation, facilitated by expansion or contraction tools to ensure a secure seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple custom-sized filter bags are used to accommodate variations in hole sizes, then sealing consistency is improved, but device complexity and inventory requirements increase
Solution Approach 1:
The filter bag incorporates an adjustable band that can dynamically change its circumference from a first size to a second size, allowing a single filter bag design to adapt to multiple hole sizes in bag houses, thereby eliminating the need for multiple custom-sized filter bags while maintaining consistent seals
Solution Approach 2:
The adjustable band mechanism enables change in the critical parameter of circumference to match different aperture sizes. The band transitions between expanded and contracted states, changing the filter bag's effective size parameter to accommodate variations in hole dimensions without requiring different filter bag designs
2Reliability
If multiple custom-sized filter bags are manufactured, then sealing performance is improved, but manufacturing complexity and inventory requirements increase
Solution Approach 1:
The filter bag design with the adjustable band serves multiple functions by accommodating various hole sizes through a single standardized design. The adjustable band acts as a universal adapter that enables one filter bag model to fit different aperture dimensions, replacing the need for multiple specialized custom-sized filter bags
3Adaptability or versatility
If the adjustable band is expanded or contracted, then adaptability to different aperture sizes is improved, but structural integrity may be compromised
Solution Approach 1:
The adjustable band is designed as a dynamic component that can reversibly transition between expanded and contracted states. This dynamic capability allows the band to adapt to different aperture sizes while maintaining structural integrity through controlled deformation and recovery, enabling repeated adjustment without permanent damage
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 solution allows a single-sized filter bag to accommodate multiple differently sized apertures, reducing the need for multiple custom sizes and ensuring effective sealing without damage or dislodgement, thus enhancing operational efficiency and reducing inventory needs.
Implementation Method 1
The perforated metal band is configured to expand with plastic deformation in a circumferential direction to impart a first radial outward force on the gasket band
Implementation Method 2
the gasket band is configured to expand with elastic deformation in the circumferential direction to impart a second outward radial force toward a sealing interface in response to the first radial outward force
Data Source
AI summary
A filter assembly system including, a filter bag having an opening, a seal coupled to the filter bag adjacent the opening, wherein the seal comprises a gasket band and a perforated metal band, and the perforated metal band is configured to bias the gasket band in a radial direction into a sealed position upon expansion or contraction of the perforated metal band.