Wastewater Screen Filter Chain Tensioning System

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Solution Overview

Problem

Wastewater treatment screen filters experience efficiency loss and increased wear due to chain and sprocket wear, necessitating improved tensioning control to maintain optimal chain tension and reduce mechanical stress.

Innovation Solution

A chain tensioning system with a sensor-actuated chain adjuster device that monitors load cells to apply a consistent tensioning force, compensating for slack and securing the chain at a desired load, thereby minimizing wear and enhancing drive efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional chain drive systems are used without active tensioning control, then the device complexity is reduced, but chain wear and drive efficiency deteriorate over time

Engineering Contradiction:
Improvechain drive efficiencyVSAvoidtensioning control system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a feedback control system where sensors continuously monitor chain tension and provide signals to a controller, which adjusts the chain adjuster device to maintain optimal tension. This closed-loop feedback mechanism ensures reliable chain drive operation while automatically compensating for wear and tension changes.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The tensioning system is designed to automatically adjust and maintain chain tension without external intervention. The controller receives sensor data and autonomously actuates the chain adjuster device, allowing the system to self-regulate and maintain optimal performance conditions throughout operation.

Inventive Principle:
Principle #25Self-service

2Productivity

If manual chain tensioning adjustments are made, then device complexity is minimized, but operational time and productivity are reduced due to intervention requirements

Engineering Contradiction:
Improvecontinuous operation capabilityVSAvoidautomatic tensioning system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The automatic tensioning system ensures continuous operation by continuously monitoring chain tension through sensors and making real-time adjustments via the controller and chain adjuster device. This eliminates interruptions for manual adjustments and maintains uninterrupted productive operation.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The patent replaces manual mechanical adjustment operations with an automated electromechanical system. Sensors detect tension conditions, the controller processes this information, and the chain adjuster device executes adjustments automatically, substituting human intervention with an integrated control system.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Duration of action of stationary object

If chain tension is not properly maintained, then device complexity remains low, but component wear increases and lifespan decreases

Engineering Contradiction:
Improvecomponent lifespanVSAvoidtension monitoring and control system
Core Design Contradiction:
Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The system performs preliminary tensioning adjustments before excessive wear occurs by continuously monitoring chain tension and making proactive adjustments. The controller detects tension deviations early and actuates the chain adjuster device to correct them, preventing conditions that would lead to accelerated component wear.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Sensors provide continuous feedback on chain tension conditions, enabling the controller to make real-time adjustments that maintain optimal tension levels. This feedback mechanism prevents both excessive tension (which would increase wear) and insufficient tension (which would reduce drive efficiency), thereby extending component lifespan.

Inventive Principle:
Principle #23Feedback

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 ensures even tensioning of the chain, reducing mechanical stress and wear on components, leading to improved operational efficiency and extended component lifespan.

Implementation Method 1

a sensor configured to provide a signal representative of a load applied by the chain adjuster

Methodology Applied
Scientific EffectLoad cell measurement:

Data Source

PatentUS11717774B2Wastewater screen filter and chain tensioning system
Publication Date: 2023.08.08 HEADWORKS INC
  • US11717774B2 patent drawing
  • US11717774B2 patent drawing
  • US11717774B2 patent drawing

AI summary

A screen filter for wastewater applications includes a chain tensioning system. The chain tensioning system provides a tensioning force for a screen filter chain. The chain tensioning system includes a chain adjuster device configured to tension the screen filter chain. The chain tensioning system additionally includes a sensor configured to provide a signal representative of a load applied by the chain adjuster; wherein the chain adjuster device is configured to apply a force in a direction that tensions the chain and wherein the signal provided by the sensor is representative of the force.