Self-Cleaning Pre-Filter for Pond Pump Biofilm

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Solution Overview

Problem

Existing pond water circulation pumps face challenges in managing large quantities or pieces of debris, leading to frequent cleaning, part replacement, and reduced efficiency.

Innovation Solution

The implementation of a biofilm enhancement structure (BES) within a screen cage, which increases the surface area for biofilm formation, thereby enhancing bacteria growth beneficial to the environment, and a pre-filter unit (PFU) with a biological cleaning mechanism and internal self-cleaning mechanism to manage debris and maintain water quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a pre-filter is used to protect the circulation pump from clogging, then the pump reliability is improved, but the pre-filter requires frequent cleaning and maintenance

Engineering Contradiction:

Improvepump reliabilityVSAvoidmaintenance time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system employs a self-cleaning mechanism where water flow automatically removes debris from the pre-filter screen through a cleaning port, eliminating the need for manual intervention and reducing maintenance time while maintaining pump reliability

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The pre-filter captures and removes large debris before it can enter and clog the circulation pump, preventing problems before they occur and ensuring continuous reliable operation without frequent maintenance interruptions

Inventive Principle:

Principle #10Preliminary action

2Reliability

If a biofilter is configured downstream to break down debris and biosolids, then the water quality is improved, but the biofilter requires significant user maintenance and resource expenditure

Engineering Contradiction:

Improvewater qualityVSAvoidmaintenance effort

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The biofilter operates autonomously using naturally occurring bacteria and algae to break down debris and biosolids, requiring no user intervention for maintenance while continuously improving water quality

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system replaces manual mechanical cleaning operations with a biological treatment process where microorganisms naturally decompose organic matter, eliminating the need for user maintenance while maintaining excellent water quality

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If standard water circulation pumps are used, then the initial cost is reduced, but the pumps require frequent cleaning, part replacement, and monitoring due to inability to manage debris

Engineering Contradiction:

Improveinitial costVSAvoidcleaning and monitoring time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The system divides the filtration function into separate components: a pre-filter for large debris, a biofilter for organic matter breakdown, and a circulation pump for water movement. This segmentation allows each component to perform its specific function efficiently, reducing overall maintenance time while maintaining affordability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pre-filter and biofilter are positioned upstream to remove and break down debris before it reaches the circulation pump, preventing clogging and damage before they occur, thereby reducing the frequency of cleaning and part replacement while keeping initial costs low

Inventive Principle:

Principle #10Preliminary action

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 biofilm enhancement structure increases beneficial bacteria, reducing toxic waste and maintenance efforts, while the PFU's cleaning mechanisms improve water quality and extend the life of the pump by effectively managing debris and algae.

Implementation Method 1

increases the surface area for biofilm formation, thereby enhancing bacteria growth beneficial to the environment

Methodology Applied

Scientific EffectBiofilm formation:

Implementation Method 2

a pre-filter unit (PFU) with a biological cleaning mechanism and internal self-cleaning mechanism to manage debris and maintain water quality

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS20250064031A1Self-cleaning pre-filter for a water circulation pump with a biofilm enhancement system and method

Publication Date: 2025.02.27 ROCHE STEPHEN D

AI summary

Herein disclosed is biofilm enhancement comprising configuring a screen cage with an inner surface and an outer surface, wherein the screen cage has a screen cage entry side for traversing the inner surface and the outer surface, configuring a pipe with a plurality of inlet apertures in fluid communication with a screen cage interior and an outlet through the screen cage entry side, suspending a biofilm enhancement structure (BES) adjacent to the plurality of inlet apertures within the screen cage interior, receiving an intake flow through the screen cage from an environment outside the screen cage and directing at least a portion of the intake flow through the BES, into the plurality of inlet apertures and through the outlet. An implementation may advantageously increase the biofilm inside the screen cage using the BES to increase surface area for the biofilm to form on, thereby increasing bacteria beneficial to the environment.