Air Scour Float Lifting for Safer Filter Bed Removal

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Solution Overview

Problem

Existing methods for removing and replacing air scour systems and filter beds in water treatment units pose safety hazards and require time-consuming dismantling, as they often involve individuals standing on planks and disconnecting pressurized air sources, and there is a need for safer and more efficient methods.

Innovation Solution

The use of floats and flexible conduits connected to air scour systems and pressurized air sources allows for the safe and efficient raising, lowering, and installation of air scour systems and filter beds without disconnecting from the air source, using liquid expansion and contraction to facilitate movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional methods are used to remove air scour systems from filter beds, then the air scour system can be removed, but individuals are exposed to safety hazards and the process is time-consuming

Engineering Contradiction:

Improveremoval efficiencyVSAvoidsafety hazards

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

A float device is introduced as an intermediary mechanism to lift the air scour system out of the filter bed. The float rises with the fluidized filter media and mechanically elevates the air scour system, eliminating the need for individuals to manually reach into the hazardous fluidized bed environment while maintaining efficient removal capability

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the air scour system is disconnected from the pressurized air source for removal, then the system can be taken out, but the process becomes more complex and time-consuming

Engineering Contradiction:

Improveremoval simplicityVSAvoiddismantling time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The air scour system is designed with flexible air supply lines that allow the system to move dynamically during removal. The flexible conduits accommodate the movement of the air scour system as it is lifted by the float, eliminating the need for disconnection while maintaining operational simplicity and reducing time loss

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If individuals stand on planks to access the air scour system, then they can perform maintenance or removal, but the risk of falling into the fluidized bed increases

Engineering Contradiction:

ImproveaccessibilityVSAvoidfalling hazard

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The float device serves as a mechanical intermediary that performs the lifting function, eliminating the need for individuals to physically access the hazardous fluidized bed zone. The float rises with the fluidized media and automatically elevates the air scour system to a safe access position without requiring personnel to stand on unstable planks

Inventive Principle:

Principle #24Intermediary (Mediator)

4Productivity

If the filter bed is fluidized for removal, then the air scour system can be raised, but the environment becomes hazardous for individuals

Engineering Contradiction:

Improveremoval efficiencyVSAvoidhazardous environment

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The float device acts as a mediator that exploits the fluidization process beneficially. It rises with the fluidized filter media to lift the air scour system, maintaining removal efficiency while keeping personnel out of the hazardous fluidized environment. The float converts the hazardous fluidized state into a useful lifting mechanism

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This method ensures safe and efficient movement of air scour systems and filter beds, reducing the risk of accidents and minimizing downtime by allowing precise placement and removal without exposing individuals to hazardous environments.

Implementation Method 1

at least one float which facilitates movement, removal and/or installation of one or more components of a treatment unit

Methodology Applied

Scientific EffectBuoyancy: Archimedes' Principle (Buoyancy)

Implementation Method 2

when a volume of liquid is directed through the filter bed, the filter bed expands and the float raises the air scour system out of the filter bed

Methodology Applied

Scientific EffectFilter bed expansion: Fluidisation

Data Source

PatentUS20260061345A1Devices and methods for moving, removing and/or installing one or more components of a treatment unit

Publication Date: 2026.03.05 ROBERTS MARKETING DE

AI summary

Devices and methods associated therewith for facilitating movement, removal and/or installation of components from treatment units (e.g., water treatment units and wastewater treatment units). The treatment unit can take the form of a granular media filter (e.g., upflow filter, downflow filter or bi-flow filter) or a sludge collection basin. One preferred device is one or more floats facilitating safe removal of components of a treatment unit. The float(s) can be operably associated with an air scour system of a water filter to remove the air scour system from a granular media filter bed. The float(s) can be operably associated with a collection grid of a sludge collection container facilitating safe removal of the collection grid from the sludge collection container. Another preferred device is a flexible piping/conduit operably connected to a pressurized air source and an air scour system to assist in removal/installation of the air scour system.