Reinforced Rotary Disk Filter Bag to Prevent Cloth Slippage
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Solution Overview
Problem
The existing rotary disk filters face issues with filter cloths slipping during operation, leading to unfiltered wastewater contaminating the filtrate due to inadequate fixation to the support frame.
Innovation Solution
A filter bag with a reinforced edge and a mounting opening is designed to securely fit over a support frame, featuring a reinforcement to prevent slippage, and a seal at the exit opening to ensure proper filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter cloth is slipped over the support frame and fixed by clamping, then the filter module can be assembled, but the filter cloth slips during operation causing unfiltered wastewater to contaminate the filtrate
Solution Approach 1:
The filter bag is provided with a reinforcement at its open end, creating a local quality enhancement specifically at the mounting location. This reinforcement (made of the same or similar material as the filter bag) prevents slippage at the critical clamping area without affecting the filtration properties of the rest of the filter bag, thus resolving the contradiction between fixation reliability and preventing harmful slippage.
2Reliability
If the filter bag is made entirely of reinforcement material, then slippage is prevented, but the filtration capability is reduced due to material thickness and rigidity
Solution Approach 1:
Instead of making the entire filter bag from reinforcement material, the reinforcement is applied locally only at the open end where mounting is required. This allows the filter bag to maintain its filtration efficiency in the main body while providing enhanced fixation capability only where needed, resolving the contradiction between fixation stability and filtration efficiency.
Solution Approach 2:
The filter bag is segmented into two functional zones: a reinforcement zone at the open end for fixation, and a filtration zone for the remaining body. This segmentation allows each part to optimize its specific function without compromising the other, preventing slippage while maintaining filtration capability.
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 reinforced filter bag effectively prevents slippage and ensures reliable filtration, maintaining the integrity of the filtrate by securely fixing the filter bag to the support frame and preventing unfiltered wastewater entry.
Implementation Method 1
the filter bag has a filter material with a mounting opening, via which the filter bag can be slipped over a support frame
Data Source
AI summary
A filter bag for a rotary disk filter, which is used to filter wastewater, has a filter material with a mounting opening, via which the filter bag can be slipped over a support frame of the rotary disk filter during a mounting step in order to form a filter module. The filter material has an exit opening that is situated opposite the mounting opening and allows filtrate to exit the interior of the filter module into a central pipe of the rotary disk filter. A reinforcement is connected to the filter material at an edge delimiting the mounting opening and fixes the filter bag at the support frame. A filter module and a rotary disk filter are disclosed.