Segmented Pleated Filter Assembly with Threaded Connection
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Solution Overview
Problem
The challenge is to integrate pleated media filter cartridges into baghouses without the limitations of space and handling issues posed by rigid pleated media filter cartridges, which are difficult to install due to their length and the constraints of current production machinery that can only accommodate filter media up to two meters in width.
Innovation Solution
A multi-piece filter assembly design featuring first and second filter elements with tubular members and threaded portions that allow for connection and fluid communication, enabling the assembly of longer pleated filter cartridges while maintaining a compact footprint, with at least one threaded portion having an outer diameter greater than the smallest inner diameter of the pleated filter elements to ensure stability and ease of installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If pleated media filter cartridges are made longer to occupy the same space as fabric filter bags, then filtering area is increased, but installation becomes difficult due to limited access space in the clean air plenum
Solution Approach 1:
The filter assembly is divided into multiple filter elements (first filter element, second filter element, etc.) that can be separately installed and connected. Each filter element has a length less than the clearance height of the clean air plenum, allowing them to be installed without excessive manipulation. The filter elements are connected end-to-end through threaded portions to form a complete filter assembly with the required total filtering area.
2Ease of manufacture
If current production machinery is used to pleat filter media, then manufacturing is feasible, but filter media wider than two meters cannot be accommodated
Solution Approach 1:
The filter media is divided into multiple segments corresponding to multiple filter elements. Each filter element can be manufactured using standard production machinery with filter media widths of two meters or less. The filter elements are then assembled together to create the complete filter assembly, effectively achieving the functionality of a single long filter cartridge while maintaining manufacturing feasibility.
3Area of moving object
If a single long pleated filter cartridge is used to occupy the same space as a four-meter fabric filter bag, then filtering area is increased, but the cartridge becomes difficult to handle and transport
Solution Approach 1:
The filter assembly is segmented into multiple manageable filter elements that can be easily handled and transported individually. Each filter element has a length less than the clearance height of the clean air plenum, making them comparable in size to standard fabric filter bags. The segmented design allows for easy handling during installation and maintenance, while the connected assembly provides the required total filtering area.
4Ease of manufacture
If threaded portions are located inside the axial extent of filter elements, then connection is achieved, but fluid communication is blocked
Solution Approach 1:
The threaded portions are positioned in a different spatial dimension (at the ends of the filter elements outside the axial extent) rather than within the axial extent of the filter media. This allows the threaded portions to be used for connection while the filter media maintains unobstructed fluid communication pathways through the filter elements.
Data Source
AI summary
A filter assembly for use in a baghouse. The baghouse has a tube sheet with a plurality of openings. The filter assembly includes a first filter element including a mounting structure at a first axial end to attach the first filter element to the tube sheet adjacent an opening. A first tubular member is fixed to and extends from the mounting structure. A first pleated filter element is disposed adjacent to the first tubular member. A first member has a threaded portion connected with the tubular member at a second axial end of the first filter element. A second filter element includes a second member having a threaded portion at a first axial end. A second tubular member is connected with and extends from the second member. A second pleated filter element is disposed adjacent to the second tubular member. The first and second threaded members are tubular. The threaded portions are threadedly engageable to connect the first filter element with the second filter element and permit fluid communication between the first and second filter elements. The threaded portions of the first and second members are located outside the axial extents of the first and second filter elements. At least one of the threaded portions has an outer diameter greater than the smallest inner diameter of the pleated filter elements.