Modular Belt Grid Design for High-Flow Debris Filtration
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Solution Overview
Problem
Existing modular plastic conveyor belts used as traveling water screens, such as the INTRALOX Series 1800 MeshTop belt, are inadequate for high-flow applications as they block water flow due to their low open-area design, which is insufficient for fast-moving streams.
Innovation Solution
A modular belt design featuring a grid-like pattern of thin transverse and link elements forming four-sided openings, with a high open area of at least 40% to allow for better water flow, and a structure that includes hinge eyes for assembly and drive engagement, allowing for efficient debris filtration in high-flow conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a modular plastic conveyor belt with narrow slits is used as a traveling water screen, then debris filtration capability is improved, but water flow capacity deteriorates in fast-moving streams
Solution Approach 1:
The patent changes the geometric parameters of the belt structure by increasing the open area from 32% to at least 40%, and by adjusting the width and spacing of the slits. This allows sufficient debris blocking while maintaining adequate water flow capacity for fast-moving streams
Solution Approach 2:
The belt is designed as a modular structure with multiple slits segmented across the belt width. Each slit acts as an independent filtering element, allowing the system to maintain filtration effectiveness while collectively providing sufficient open area for high flow applications
2Productivity
If the open area of the belt is increased to improve water flow, then water flow capacity is improved, but debris blocking capability deteriorates
Solution Approach 1:
The patent optimizes the parameters of the slits including their width, spacing, and depth to achieve the optimal balance. The slits are configured with specific dimensional ratios that allow 40% or greater open area while maintaining effective debris blocking through the combination of multiple narrow passages
3Reliability
If a heavy-duty belt with many narrow slits is used, then fish screening capability is improved, but water flow blockage increases in high-flow applications
Solution Approach 1:
The patent adjusts the geometric parameters of the screening structure by increasing the open area to at least 40% and optimizing the slit dimensions. This allows the belt to screen fish effectively while reducing water flow blockage to acceptable levels for fast-moving streams and high-flow cooling water intake applications
Data Source
AI summary
A modular belt constructed of belt modules having a large open area, making the belt suitable for use as a traveling water screen. The modules include an intermediate portion composed of intersecting sets of link elements and transverse elements that form a gridlike pattern. Openings bounded by the walls of consecutive link elements and transverse elements form channels through the belt for the flow of water. The modules are connected together by hinge rods to form a belt that can be used as a water screen. Detachable flights or scoops for lifting debris or fish out of a stream are attachable to base modules.