Storm Water Filter Basket with Nested Wire Frame
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Solution Overview
Problem
Existing filter systems for storm water sewers lack a combination of key features such as lightweight and durable construction, ease of installation, convenient sediment removal, cost-effectiveness, and adaptability to various sizes and configurations of storm sewer inlets and grates.
Innovation Solution
A filter system comprising a horizontal mount frame supporting a welded outer wire basket with porous flexible filter material, and an optional smaller lift-out inner wire basket, designed to be easily installed under removable metal grates, allowing for efficient sediment collection and reuse, with a hook connection to accommodate different grate frame shapes and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If filter systems are constructed to be lightweight and durable, then ease of installation and removal is improved, but manufacturing complexity and cost may increase
Solution Approach 1:
The filter system is divided into separate modular components: a reusable wire basket frame and replaceable filter media sections. This segmentation allows the frame to be installed once and reused, while only the filter media needs replacement, simplifying installation and maintenance operations.
Solution Approach 2:
The filter media is designed to be inserted into and nested within the wire basket frame structure. This nesting approach allows the flexible filter material to conform to the rigid frame, combining the durability of the frame with the filtering capability of the media in a compact integrated unit.
2Adaptability or versatility
If filter systems are designed to accommodate various sizes and configurations of storm sewer inlets and grates, then adaptability is improved, but device complexity increases
Solution Approach 1:
The wire basket frame is designed with a universal configuration that can accommodate multiple grate sizes and shapes (rectangular, square, circular). The standardized frame dimensions and attachment mechanisms allow a single design to serve multiple applications across different storm sewer inlet configurations.
Solution Approach 2:
The system allows for parameter adjustments in the filter media sections to match different grate configurations. The flexible filter material can be cut and shaped to fit various opening dimensions, while the underlying wire frame structure remains standardized, enabling adaptability without increasing overall system complexity.
3Reliability
If filter material is made porous and flexible for effective filtering, then filtering performance is improved, but structural strength and durability may worsen
Solution Approach 1:
The filter system combines two different materials with complementary properties: a rigid wire basket frame providing structural strength and durability, and porous flexible filter media providing filtering performance. This composite construction allows each material to perform its optimal function without compromising the other.
Solution Approach 2:
Different parts of the system have different material properties optimized for their specific functions. The wire frame sections require high strength and rigidity, while the filter media sections require porosity and flexibility. By applying local quality principles, each component is made from materials best suited to its specific operational requirements.
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 system is lightweight, durable, easy to install, and cost-effective, enabling convenient sediment removal and reuse, while accommodating diverse grate configurations, thus effectively filtering sediment and foreign materials in storm water sewers.
Implementation Method 1
a porous flexible filter material lines the outer wire basket and covers the openings between the crossing wires of the basket
Data Source
AI summary
A filter system for a storm water sewer includes a flat mount frame with inwardly projecting support wires and seats on an internal ledge of a grate frame supporting a removable grate. A fabricated circular wire basket has welded cross wires defining openings in side and bottom walls and is lined with a porous filter fabric for collecting silt within storm water flowing through openings in the grate. The wire basket has upwardly projecting bent wire portions hooked onto the support wires of the mount frame and define overflow passages and handle openings for removing the mount frame and the basket after the grate is removed. A smaller and lined lift-out wire basket is supported within a lower portion of the wire basket attached to the mount frame, and each wire basket may be compressed laterally into an oval configuration for use with a rectangular mount frame.