Movable Filter Grid for Drain Inlets
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Solution Overview
Problem
Conventional drain grates are ineffective in blocking large debris such as tree leaves and scrap papers, leading to clogged drains and flooding, as their filter holes are often too small and cannot be easily cleaned.
Innovation Solution
A movable filter grid with a drain grill, annular seat, and annular fastener, featuring support ribs and pins that can adjust to fit irregular terrain, allowing for flexible contact with the ground and easy debris removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the drain holes on the filter frame are made small to block debris, then the blocking capability is improved, but the drainage efficiency deteriorates when large debris covers the holes
Solution Approach 1:
The filter frame is designed to be movable relative to the support frame, allowing it to be dynamically adjusted or removed. This enables the system to adapt between blocking mode (filter frame in place) and drainage mode (filter frame removed or moved), resolving the contradiction between blocking capability and drainage efficiency
Solution Approach 2:
The drain grate is divided into separate components: support frame, movable filter frame, and mounting seat. This segmentation allows the filter frame to be independently manipulated - it can be positioned to block debris or moved away to enable full drainage, eliminating the trade-off present in integrated designs
2Manufacturing precision
If the drain grate is designed to match the drain inlet size, then the fitting precision is improved, but the adaptability to irregular terrains deteriorates
Solution Approach 1:
The mounting seat and filter frame are designed with movable connections that allow dynamic adjustment of the grate's position and angle. This enables precise fitting on flat surfaces while also adapting to irregular terrains, eliminating the need for a fixed rigid design
Solution Approach 2:
The system allows changes in positional parameters and orientation of the filter frame relative to the support frame. This parameter flexibility enables the same structure to adapt to various terrain conditions while maintaining proper fit and function
3Stability of the object's composition
If the filter frame is fixed on the support frame, then the structural stability is improved, but the ease of cleaning deteriorates
Solution Approach 1:
The filter frame is designed as a separate, movable component rather than a fixed integral part. This segmentation allows the filter frame to be easily detached from the support frame for cleaning while maintaining structural stability during normal operation through proper mounting mechanisms
Solution Approach 2:
The connection between filter frame and support frame is designed to be dynamic rather than fixed - allowing the filter frame to be securely positioned during operation but easily moved or removed for cleaning, resolving the contradiction between stability and ease of maintenance
Data Source
AI summary
A movable filter grid for a drain inlet has a drain grill, an annular seat and an annular fastener. The drain grill has an annular plate and multiple support ribs. A first end of each support rib is connected to an outer circumferential edge of the annular plate, and a second end of the support rib radially extends outwards from the annular plate. An inner wall of an annular seat is securely connected to the second ends of the support ribs. The annular fastener has multiple pin holders annularly connected. Each pin holder has a through hole vertically formed through the pin holder and detachably mounted through by a pin. When the movable filter grid is applied to drain inlets on different terrains, the pins taking the form of a grating can prevent debris from blocking the drain holes.