Pivoting Drive Head Rake System for Vertical Debris Removal
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Solution Overview
Problem
Existing water debris removal systems face challenges in efficiently removing debris at various angles, including vertical, due to limitations in drive head mechanisms and skimmer interaction with screens.
Innovation Solution
The introduction of a pivoting drive head apparatus and a flexing apparatus that allows the chain to flex away from the screen while maintaining pressure, combined with dual wiper blade assemblies and a modular design for flexibility and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed drive head mechanism is used, then the structure is simple and stable, but the system cannot effectively remove debris at vertical or varied angles
Solution Approach 1:
The drive head is made pivotable rather than fixed, allowing it to dynamically adjust its orientation to match the screen angle. This enables the rake system to effectively remove debris at vertical or varied angles while maintaining a relatively simple mechanism that pivots around a fixed point.
Solution Approach 2:
The pivotable drive head design allows the same mechanism to handle multiple screen orientations (horizontal, vertical, and angled positions), making the rake system universally applicable to different debris removal scenarios without requiring separate specialized mechanisms for each angle.
2Reliability
If the chain maintains constant contact with the screen, then debris removal is consistent, but large debris causes excessive wear and potential damage
Solution Approach 1:
The chain is designed to be flexible rather than rigid, allowing it to dynamically adjust its position. When large debris is encountered, the chain can flex away from the screen to avoid excessive wear and potential damage, while still maintaining contact during normal operation for consistent debris removal.
Solution Approach 2:
The flexible chain design provides a cushioning effect by allowing temporary separation from the screen when encountering large debris, preventing the transmission of excessive forces that could cause damage to the chain, skimmers, or screen structure.
3Productivity
If single wiper blades are used, then the structure is simple, but cleaning efficiency is insufficient
Solution Approach 1:
Multiple wiper blades are combined into a single assembly that operates together to clean the screen surface. This merging of multiple cleaning elements into one integrated unit improves cleaning efficiency by covering more area and providing multiple contact points, while the modular assembly design keeps the overall structure manageable.
Data Source
AI summary
A rake system and method may include a framework, a chain, an elongated rail, a support arm, and an engagement feature. The elongated rail may be pivotably connected to the framework. The support arm may be connected to the elongated rail at a first point and may be pivotably connected to the framework at a second point. The engagement feature may be connected to the support arm and may be configured to engage the chain. The rake system may be configured to discard debris.