Closed Feeding Device for Liquid Media Preservation

Solution Overview

Problem

Conventional dosing devices for liquid media, especially those containing solid particles, face issues such as contamination, fluid loss, clogging, and the need for preservatives due to open systems, which can lead to inconsistent product quality and health and safety risks.

Innovation Solution

A closed system feeding device with exchangeable containers and a preservative composition containing hydrogen peroxide or metal salts, such as silver, combined with phosphorus compounds, is used to supply additives to a metering device, preventing contamination and ensuring consistent product quality while allowing for automated preservation and safe handling of hazardous substances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If open storage containers are used for liquid media, then ease of filling and operation is improved, but contamination risk and product quality consistency deteriorate

Engineering Contradiction:

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system divides the storage function into separate sealed containers that are filled externally under controlled conditions, then connected to the dosing system. This segmentation allows filling operations to be performed separately from the dosing environment, preventing contamination while maintaining operational simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system creates a closed, controlled environment for the liquid media by using sealed containers with sterile connections. This inert environment protection prevents microbial contamination and evaporation, ensuring product quality consistency throughout the dosing process.

Inventive Principle:

Principle #39Inert atmosphere (Inert environment)

2Device complexity

If open systems are used for dosing liquid media, then device complexity is reduced, but contamination and liquid loss increase

Engineering Contradiction:

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The system introduces sterile connection interfaces and closed transfer mechanisms as intermediaries between the external filling environment and the internal dosing system. These intermediaries prevent direct exposure to contaminants while maintaining system simplicity through standardized connection protocols.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If preservatives are added to liquid media in open containers, then microbial contamination is prevented, but health and safety risks and environmental pollution increase

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The system performs sterilization and preservative application in advance during the controlled container filling process, before the liquid media enters the dosing system. This preliminary action ensures microbial protection is established without requiring ongoing preservative addition that would create health and safety risks during operation.

Inventive Principle:

Principle #10Preliminary action

4Ease of operation

If manual refilling of storage containers is performed, then ease of operation is maintained, but contamination risk and labor requirements increase

Engineering Contradiction:

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system extracts the filling operation from the dosing environment by using externally filled sealed containers. This extraction allows manual refilling to be performed in a controlled external environment, eliminating the contamination risk associated with opening containers within the dosing system while maintaining operational simplicity.

Inventive Principle:

Principle #2Taking out (Extraction)

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 closed system prevents contamination and ensures consistent product quality, extends the service life of additives, and reduces health and safety risks by eliminating the need for manual handling of hazardous substances, while maintaining effective preservation without classic preservatives.

Implementation Method 1

a stabilizing or preservative preparation is applied to the colorant containers to effectively prevent microbial contamination of the colorants in the containers

Methodology Applied

Scientific EffectOxidation: Oxidation

Implementation Method 2

a preservative composition containing hydrogen peroxide or metal salts, such as silver, combined with phosphorus compounds

Methodology Applied

Scientific EffectChemical reaction: Chemical Bonding

Data Source

PatentEP4397599A1Feeding device

Publication Date: 2024.07.10

Figure 1~2C

AI summary

The present invention relates to a device (feeding device) with which liquid media can be fed to a metering device for flowable compositions, and to a composition for use in metering devices which makes it possible to protect aqueous media, especially colorant preparations for architectural paints, from microbial infestation.