Filter Bag Support System Radial Locking Mechanism

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Solution Overview

Problem

Existing bag house equipment filter bag support systems do not adequately ensure efficient filtering and reduce the risk of fires caused by incorrectly mounted filter bags.

Innovation Solution

A filter bag support system comprising a support cage and a lock ring that interact to ensure proper mounting of the filter bag, with the lock ring having sections of different radii to expand the support cage radially and clamp the filter bag in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If filter bags are supported by support cages placed inside the filter bags, then the filter bags are held in place and filtering efficiency is improved, but the risk of fires due to static electricity increases when filter bags are incorrectly mounted or contact with nearby filter bags

Engineering Contradiction:
Improvefiltering efficiencyVSAvoidfire risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The lock ring acts as an intermediary component between the support cage and the cell plate, providing a positive locking mechanism that ensures proper mounting of the filter bag. This intermediary element prevents incorrect mounting positions that could lead to filter bag contact and static electricity buildup, thereby reducing fire risk while maintaining filtering efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The support cage with integrated lock ring is designed to self-align and self-lock into the cell plate opening through the radial expansion mechanism. When the lock ring is rotated, it automatically expands the top section of the support cage to engage with the cell plate edge, ensuring correct positioning without external intervention and preventing misalignment that could cause fire hazards.

Inventive Principle:
Principle #25Self-service

2Reliability

If threaded elements are used to secure the filter bag, then the filter bag can be held in place, but food residues can stick to the threaded elements reducing hygiene

Engineering Contradiction:
Improvemounting securityVSAvoidfood residue accumulation
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention extracts and eliminates the threaded elements from the mounting mechanism. Instead of using threads that create crevices for food residue accumulation, the design uses a smooth-bore lock ring with a radial expansion locking mechanism that engages with the cell plate opening and support cage without creating surfaces where food particles can stick, thereby maintaining hygiene while ensuring secure mounting.

Inventive Principle:
Principle #2Taking out (Extraction)

3Manufacturing precision

If the support cage is made expandable in radial direction with lock ring mechanism, then proper mounting is ensured and filtering efficiency improves, but the device complexity increases

Engineering Contradiction:
Improvemounting precisionVSAvoidsupport cage structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The invention merges the support cage and lock ring into a single integrated component, where the lock ring is formed as part of the support cage structure. This combination eliminates the need for separate locking mechanisms while providing the radial expansion functionality, thereby reducing overall device complexity while maintaining precise mounting capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The support cage incorporates a dynamic radial expansion capability through the lock ring mechanism. The top section of the support cage can expand radially when the lock ring is rotated, transforming from a compact state during installation to an expanded locked state during operation. This dynamic feature enables precise mounting without requiring complex static structural elements.

Inventive Principle:
Principle #15Dynamics

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 solution enhances filtering efficiency and reduces the risk of fires by ensuring correct filter bag mounting and preventing static electricity buildup.

Implementation Method 1

the top section of the support cage is expandable in a radial direction R, and the lock ring is provided with a first section with a first radius R1 and a second section with a second radius R2, wherein the second radius R2 is greater than the first radius R1, wherein the second section is arranged to expand the top section of the support cage in the radial direction R

Methodology Applied
Scientific EffectRadial expansion:

Data Source

PatentUS12274965B2Filter bag support system, a bag house equipment and a method for installing a filter bag
Publication Date: 2025.04.15 TETRA LAVAL HOLDINGS & FINANCE SA
  • US12274965B2 patent drawing
  • US12274965B2 patent drawing
  • US12274965B2 patent drawing

AI summary

A filter bag support system arranged to support a filter bag for separating food powder and air, comprising a support cage arranged to be placed inside the filter bag, and a lock ring arranged to be placed inside a top section of the support cage, wherein the top section of the support cage is expandable in a radial direction by the lock ring which is arranged to expand the top section of the support cage in the radial direction, towards an edge of the opening of a cell plate when the filter bag support system is located in the cell plate and when the lock ring is rotated within the top section.