Air Filter Sleeve Tensioning via Movable Lower Support

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Solution Overview

Problem

Existing air filtration devices with filtering sleeves require cumbersome and dangerous maintenance operations, particularly in cramped and dusty environments, leading to inefficiencies and potential health risks.

Innovation Solution

The air filtration device features a design where all filtering sleeves are simultaneously tensioned using translational means of the lower support structure relative to the upper support structure, allowing for precise tensioning and simplified maintenance from a safer, less polluted area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If filter sleeves are tensioned individually using traditional methods with nuts and protruding rods, then each sleeve can be secured to the lower support structure, but the maintenance operations become cumbersome and dangerous due to narrow spaces and dusty environments

Engineering Contradiction:

Improvesleeve tensioning reliabilityVSAvoidmaintenance accessibility

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent combines multiple individual tensioning operations into a single collective operation. The lower support structure is designed as a unified movable unit that simultaneously tensions all filter sleeves through a single lifting action, eliminating the need for operators to work individually in hazardous spaces.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces an intermediary lifting mechanism that mediates between the operator and the filter sleeves. This intermediary system (the movable lower support structure) performs the dangerous tensioning work in the hazardous environment, protecting operators from direct exposure to dust and narrow spaces.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the lower support structure and protruding rods are made of non-sparking materials to prevent explosions, then safety in explosive dust environments is improved, but the complexity of the support structure increases

Engineering Contradiction:

Improvespark preventionVSAvoidsupport structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges multiple separate components (protruding rods, nuts, mounting mechanisms) into a single integrated lower support structure. This reduces the number of parts that need to be made from specialized non-sparking materials, thereby reducing overall structural complexity while maintaining safety.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If filter sleeves are tensioned simultaneously by translating the lower support structure, then assembly and maintenance operations are simplified and performed from a safer area, but the device complexity increases due to translation mechanisms

Engineering Contradiction:

Improveassembly simplicityVSAvoidtranslation mechanism complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The lower support structure is designed with multi-functionality, serving both as the mounting structure for filter sleeves and as the translating mechanism itself. This eliminates the need for separate translation devices, reducing overall device complexity while enabling simultaneous tensioning of all sleeves.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Manufacturing precision

If individual tensioning of each filter sleeve is performed manually, then each sleeve can be secured properly, but the time required for assembly and maintenance increases significantly

Engineering Contradiction:

Improvesleeve tension uniformityVSAvoidassembly time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent merges multiple sequential tensioning operations into a single simultaneous operation. By translating the entire lower support structure, all filter sleeves are tensioned at the same time, maintaining uniform tension while reducing assembly time from hours to minutes.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The filter sleeves are pre-positioned and attached to the movable lower support structure before the tensioning operation. This preliminary arrangement allows all sleeves to be secured uniformly in a single subsequent translation action, eliminating repeated individual adjustment operations.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4537923A1Air filtration device with filtering sleeves, filtering sleeve and corresponding mounting and tensioning methods

Publication Date: 2025.04.16 SOC CATTINAIR

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AI summary

The present invention relates to an air filtration device (1) with filter bags (5) comprising: - an upper body (2) from which the air filtered by the air filtration device (1) is discharged, - a sedimentation chamber (3) disposed under said upper body (2), and provided with waste recovery means at its lower part, - a vertical filter cartridge (4) comprising a peripheral envelope (40) and filter bags (5) extending between said sedimentation chamber (3) and the upper body (2), and attached in the filter cartridge (4) to a lower support structure (6) and to an upper support structure (7), and - means for energizing (8) the entire set of filter bags (5) at a determined average voltage.The invention also relates to a method of mounting and tensioning filter sleeves (5) in such an air filtration device (1), a corresponding filter sleeve (5), and an installation comprising such an air filtration device (1).