Self-Cleaning Filter With Submersible Actuator for Low-Pressure Separation

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Solution Overview

Problem

Existing mechanical blending systems struggle to maintain a consistent blend under low inlet water feed pressures and require a mechanical blender driven by a submersible motor for effective liquid separation.

Innovation Solution

An automatic self-cleaning filter system utilizing a submersible actuator to separate substances within a liquid, comprising an outer chamber, filter cup with a removable mesh, and a submersible actuator that spins an interconnecting shaft to push unfiltered liquid against the mesh, allowing sediment to be trapped while filtered liquid passes through, with outlets for sediment and filtered liquid.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mechanical blending system is used for liquid separation, then separation can be achieved, but the system fails to maintain consistent blend under low inlet water feed pressure

Engineering Contradiction:

Improveconsistent blendVSAvoidinlet water feed pressure

Core Design Contradiction:

ReliabilityVSStress or pressure

Solution Approach 1:

The patent replaces the traditional mechanical blender system with a submersible motor-driven system. The submersible motor is positioned directly in the liquid stream, using the liquid's own flow to drive the separation process through centrifugal force generated by the rotating assembly, eliminating dependence on high inlet pressure

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system utilizes hydraulic principles by employing the liquid flow itself as the driving force. The submersible motor converts the kinetic energy of the flowing liquid into rotational motion, which then generates centrifugal force for separation, effectively using the fluid's own energy rather than requiring high pressure input

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Productivity

If a traditional mechanical blender is used, then liquid separation can be performed, but the system requires high inlet pressure to function effectively

Engineering Contradiction:

Improveliquid separation efficiencyVSAvoidinlet water feed pressure

Core Design Contradiction:

ProductivityVSStress or pressure

Solution Approach 1:

The submersible motor-driven system is self-actuating, using the liquid flow itself to power the separation process. The motor draws energy directly from the flowing liquid, and the rotating assembly uses the liquid's kinetic energy to generate centrifugal force for separation, making the system self-sufficient without requiring high pressure input

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system transitions from a static, pressure-dependent mechanical blender to a dynamic, flow-driven system. The submersible motor and rotating assembly create motion that adapts to the liquid flow conditions, generating centrifugal force that maintains separation efficiency across varying pressure conditions

Inventive Principle:

Principle #15Dynamics

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 consistent separation and filtration even at low pressures, effectively separating sediment from filtered liquid without mixing, and can be adapted for sludge thickening applications.

Implementation Method 1

spinning of the interconnecting shaft, in response to power generated by the submersible actuator, causes the brush to push the unfiltered liquid or substance against the walls of the receptacle

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force