Segmented Gas Filter Cartridge for Confined Space Maintenance
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Solution Overview
Problem
Existing gas filtration devices, particularly those for compressed air, face challenges in maintenance and replacement due to design limitations in confined spaces and the risk of mis-matched components leading to incorrect ordering and prolonged downtime during maintenance.
Innovation Solution
A filter apparatus design featuring a filter cartridge with a resilient connection arrangement, including clips and lugs for secure attachment to a bowl, allowing for easy removal and replacement without stiction issues, and compatible with various filtration apparatus types, including filter-regulator devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the bowl is designed to completely detach from the filter head for maintenance, then the filter can be replaced, but a large amount of space is required which is not available in confined spaces
Solution Approach 1:
The filter cartridge is segmented into an upper part and a lower part that can be separated from each other. The upper part remains attached to the filter head while the lower part can be detached for filter element replacement, eliminating the need to remove the entire bowl from the head and reducing the space required for maintenance operations.
Solution Approach 2:
The filter element is extracted from the lower part of the cartridge, which can be accessed and replaced without removing the entire bowl assembly. This allows maintenance personnel to service the filter element by simply detaching the lower part, taking out the spent filter, and inserting a new one in confined spaces.
2Ease of repair
If the bowl is designed to completely detach from the filter head for maintenance, then the filter can be replaced, but the bowl must be moved completely away which complicates the operation in confined spaces
Solution Approach 1:
The cartridge is divided into upper and lower parts with the lower part being removable. This segmentation allows the lower part to be detached and operated on independently without moving the entire bowl assembly, significantly simplifying the maintenance operation in confined spaces.
3Reliability
If mis-matching components are used to prevent incorrect assembly, then component compatibility is controlled, but incorrect ordering can still occur and maintenance time is prolonged
Solution Approach 1:
The bowl and cartridge interface is designed with universal compatibility features that allow the same bowl design to work with different filter apparatus types (filter-only, filter-regulator, filter-regulator-lubricator). This universality prevents incorrect ordering while maintaining ease of replacement, as personnel can confidently order the correct bowl size without worrying about specific apparatus variations.
Data Source
AI summary
A filter apparatus for filtering a stream of gas. The cartridge has an upper part and a lower part. The upper part is joined to the lower part by a connection. The filter cartridge supports a filter element. The filter cartridge has a resilient connection arrangement for connecting the filter cartridge to a bowl of a filter apparatus. The filter apparatus has a head, a bowl connectable to and sealable relative to said head, and the filter cartridge.