Filter Candle Reinforced Collar for Vibration-Resistant Filtration
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Solution Overview
Problem
Existing filter elements, particularly long filter candles, face issues with mechanical instability and stress in the collar area due to weight and mechanical vibrations, leading to potential cracking or breakage, while maintaining high filter performance and stability remains a challenge.
Innovation Solution
The filter element is designed with a collar section having a higher O-ring strength than the filter section, achieved through varying material density, tensile strength, fiber content, or fiber material selection, allowing the collar area to be shorter and more mechanically resilient, connected via threads and adhesive bonds for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the filter element length is increased to improve filter performance, then the filter performance is improved, but the mechanical stress and weight in the collar area increase, leading to potential cracking or breakage
Solution Approach 1:
The collar section is designed with different material properties than the filter section, specifically using a material with higher tensile strength and higher O-ring strength to locally reinforce the area subjected to mechanical stress. This allows the filter element to achieve both high filter performance through increased length and sufficient mechanical strength to prevent cracking in the collar area.
Solution Approach 2:
The filter element uses composite construction with at least two different materials: a filter material for the filter section and a reinforcement material for the collar section. The reinforcement material has superior mechanical properties including higher tensile strength and higher O-ring strength, creating a composite structure that optimizes both filtration performance and mechanical durability.
2Strength
If the collar section uses higher fiber content to increase mechanical strength, then the mechanical stability is improved, but the differential pressure increases, increasing operating costs
Solution Approach 1:
The higher fiber content and higher O-ring strength material are applied locally only to the collar section where mechanical strength is needed, rather than throughout the entire filter element. This localized reinforcement provides the necessary mechanical stability to prevent collar cracking while minimizing the overall differential pressure across the filter element, as the collar section represents a small portion of the total filter length.
Data Source
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AI summary
The present invention relates to a filter element (1), in particular a filter candle for filtering exhaust gases or process gases, having a filter body that is closed at one end and open at its opposite end, wherein an outwardly projecting collar (4) is formed on the open end of the filter body and the filter body is divided into at least one collar section (3) containing the collar (4) and a filter section (2) connected to the collar, characterized in that the collar section (3) has a higher O-ring strength than the filter section (2), wherein the O-ring strength is determined as defined in the description. The invention further relates to a method for producing such a filter element and to its use, and furthermore to the use of a collar section with a higher O-ring strength than the filter section for such a filter element.