Filter Press Compression Gas External Medium
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Solution Overview
Problem
Conventional filter presses require complex structures and additional components prone to wear, necessitating frequent maintenance for effective liquid extraction from filter cakes.
Innovation Solution
A method and filter press design where compression gas is applied externally to the filter medium to compress the filter cake, eliminating the need for a separate membrane or diaphragm element, and allowing for robust and reliable operation with reduced maintenance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a separate membrane or diaphragm element is used to compress the filter cake, then liquid extraction effectiveness is improved, but device complexity and maintenance requirements increase
Solution Approach 1:
The invention extracts and eliminates the separate membrane or diaphragm element from the compression system. Instead of using a dedicated compression membrane, the filter medium itself is utilized to perform both filtration and compression functions, thereby removing the problematic component that required frequent maintenance while maintaining effective liquid extraction from the filter cake
Solution Approach 2:
The filter medium is given multiple functions: it serves both as the filtration barrier to separate liquid from solids and as the compression element to extract residual liquid from the filter cake. This multi-functionality eliminates the need for a separate compression membrane, reducing device complexity and maintenance requirements while preserving productivity
2Productivity
If a separate membrane or diaphragm element is used to compress the filter cake, then liquid extraction effectiveness is improved, but maintenance frequency increases due to wear
Solution Approach 1:
The invention removes the separate compression membrane/diaphragm component that was subject to wear and required frequent maintenance. By eliminating this dedicated compression element and using the filter medium for both filtration and compression, the system achieves effective liquid extraction without the reliability issues associated with wear-prone separate components
Solution Approach 2:
The filter medium serves itself by performing both filtration and compression functions. Instead of requiring a separate compression membrane that would wear out, the filter medium utilizes its own structural integrity to compress the filter cake and extract liquid, thereby eliminating the maintenance burden associated with separate compression components
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
This approach simplifies the filter press construction, reduces wear and maintenance needs, and effectively extracts residual liquid from filter cakes without damaging the filter medium, enhancing the robustness and reliability of the filtration process.
Implementation Method 1
providing compression gas directly on a side of the filter medium exterior to the filter chamber so as to exert a compression pressure directly on said side of the filter medium
Implementation Method 2
filter material is fed into a filter chamber so as to separate filtrate from solids with a flexible filter medium
Implementation Method 3
the filter medium itself yields towards the filter chamber and compresses the filter cake
Data Source
AI summary
A method of operating a filter press, wherein filter material is fed into a filter chamber so as to form a filter cake between at least two sides of a flexible said filter medium. Filtrate is received from the filter chamber and the filter cake formed the filter chamber is discharged. Prior to discharging the filter cake, compression is applied on the filter cake formed within the filter chamber by providing compression fluid gas at a compression pressure exceeding a prevailing pressure within the filter chamber, directly on a side of the filter medium exterior to the filter chamber, so as to exert said compression pressure directly on said side of the filter medium, thereby causing the filter medium to yield against the filter cake.