Rotatable Filter Screen for Self-Cleaning Particle Removal
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Solution Overview
Problem
Existing liquid filtering devices for removing plastic particles, such as plastic fibers, are cumbersome and inconvenient to maintain, particularly in domestic settings, due to the complexity of removing captured particle-sludge.
Innovation Solution
A filtering device with a rotatable filter screen unit that accumulates particle-sludge radially outward, allowing for centrifugal self-cleaning, where the filter screen unit is rotated to detach and gather sludge in the inlet chamber, which can be easily removed without manual intervention, and includes impeller means to actively transport sludge for efficient removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional filtering device is used to filter particles from liquid, then the filtering function is achieved, but the maintenance effort and complexity for removing particle-sludge increases
Solution Approach 1:
The filter screen unit performs self-cleaning by rotating to detach particle-sludge from its own surface using centrifugal force. The system automatically removes accumulated particles without requiring manual intervention to disassemble or clean the filter, making the filtering device maintain itself
Solution Approach 2:
The filter screen unit transitions from a static filtering component to a dynamic rotating element. During operation, it rotates to generate centrifugal force that detaches particle-sludge from its surface, enabling automatic cleaning while maintaining filtering functionality
2Ease of manufacture
If the filter screen unit is made stationary for simple structure, then manufacturing is easier, but the ability to automatically remove particle-sludge is lost
Solution Approach 1:
The filter screen unit is designed to rotate about an axis during operation. This rotational movement enables the system to automatically detach and remove particle-sludge from the filter surface through centrifugal force, providing self-cleaning capability while maintaining a relatively simple structural design
Solution Approach 2:
The system changes the operational state of the filter screen unit from static to dynamic rotation. By varying the rotational speed and direction, the system optimizes centrifugal force to detach particle-sludge effectively, achieving automated cleaning without complex mechanical structures
3Reliability
If particle-sludge accumulates on the filter screen unit during filtering, then filtering effectiveness increases, but the maintenance complexity and difficulty of sludge removal increases
Solution Approach 1:
The filter screen unit rotates to generate centrifugal force that automatically detaches particle-sludge from its surface. This dynamic action simplifies sludge removal by eliminating the need for manual disassembly or complex cleaning mechanisms, while the sludge accumulates in a designated chamber for easy evacuation
Solution Approach 2:
The system separates the filtering function from the sludge removal function. The filter screen unit performs filtering while particle-sludge is transported to a separate accumulation chamber. This segmentation allows independent optimization of filtering effectiveness and simplifies sludge removal operations
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 significantly reduces maintenance efforts and enhances the effectiveness of the filtering process by allowing for automated and efficient removal of particle-sludge, maintaining the device's operational efficiency and user convenience.
Implementation Method 1
the filtering device is configured to be operated in a self-cleaning mode in which the filter screen unit is rotated to detach filtered particle-sludge from the filter screen unit
Implementation Method 2
the filtering device comprises a first impeller means configured to move liquid from the outlet chamber through the filter screen unit to the inlet chamber, in the self-cleaning mode
Data Source
AI summary
A filtering device for filtering particles, in particular plastic particles, such as plastic fibers, from liquid is configured to be operated in a filtering mode in which particles, in particular plastic particles, are filtered from a liquid flowing through the filtering device, the filtering device comprising an inlet chamber receiving unfiltered liquid in the filtering mode, an outlet chamber receiving filtered liquid from the inlet chamber in the filtering mode, and a filter screen unit separating the inlet chamber from the outlet chamber and being configured to filter particles from liquid flowing from the inlet chamber into the outlet chamber, wherein the filter screen unit is rotatable about an axis of rotation, characterized in that at least a part of the inlet chamber is located radially outward of the rotatable filter screen unit with respect to the axis of rotation, and the filtering device is configured to be operated in a self-cleaning mode in which the filter screen unit is rotated to detach filtered particle-sludge from the filter screen unit.