Reactor Stirring Device Adjustable Holder for Brittle UV Lamp

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Solution Overview

Problem

Existing stirring devices used in plastics chemistry, particularly those chlorinating polyvinyl chloride, face reliability issues due to brittle UV lamp enclosures that are prone to damage from vibrations and shear forces, leading to compromised assembly security and operational safety.

Innovation Solution

A stirring device with adjustable holders for brittle units, such as quartz glass enclosures, that can be securely attached to the container wall, allowing for compensation of manufacturing and assembly tolerances, and featuring a carrier unit and connection system to absorb and dissipate forces evenly, thereby reducing damage and enhancing stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the brittle enclosure is kept relatively short and attached at only two points, then the enclosure is less susceptible to damage from the agitator, but the assembly security and operational reliability are compromised due to manufacturing and assembly tolerances

Engineering Contradiction:
Improveassembly securityVSAvoidholder structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The holder structure is designed with adjustable holding positions that can be moved along the container wall to compensate for manufacturing and assembly tolerances. This dynamic adjustment capability ensures reliable assembly security without requiring a complex fixed structure, resolving the contradiction between reliability and device complexity.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the brittle enclosure is kept relatively short, then it is less susceptible to damage from vibrations and shear forces, but the UV radiation coverage and process effectiveness are reduced

Engineering Contradiction:
Improveoperational reliabilityVSAvoidprocess effectiveness
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The adjustable holding positions allow the brittle enclosure to be optimally positioned to distribute vibrations and shear forces evenly, maximizing its durability while maintaining sufficient length for effective UV radiation coverage. This dynamic positioning resolves the contradiction between operational reliability and process effectiveness.

Inventive Principle:
Principle #15Dynamics

3Reliability

If the holding position is fixed, then the holder structure is simpler, but manufacturing and assembly tolerances cannot be compensated, leading to compromised assembly security

Engineering Contradiction:
Improveassembly securityVSAvoidholder manufacturing
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The holder incorporates adjustable holding positions that can be positioned along the container wall to compensate for tolerances. While this adds some manufacturing complexity, it significantly improves assembly security and operational reliability, resolving the contradiction between reliability and ease of manufacture.

Inventive Principle:
Principle #15Dynamics

4Reliability

If the brittle unit is held at fixed positions, then the holder design is simpler, but vibrations and shear forces are not evenly dissipated, causing increased damage

Engineering Contradiction:
Improveservice lifeVSAvoidholder configuration
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The adjustable holding positions enable the holder to be configured to evenly dissipate vibrations and shear forces acting on the brittle unit, extending its service life. This dynamic configuration capability resolves the contradiction between service life and holder complexity.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3576869B1Stirring device
Publication Date: 2023.08.30 EKATO RUHR & MISCHTECHN
  • EP3576869B1 patent drawingFigure 1
  • EP3576869B1 patent drawingFigure 2
  • EP3576869B1 patent drawingFigure 3

AI summary

The invention relates to a stirring device, in particular a reactor stirring device, having at least one holder (10), which is provided for holding at least one brittle unit (12) within a container (14) relative to at least one container wall (16) of the container (14) and which has at least one holding unit (18) for this purpose. According to the invention, at least one holding position of the holder (10) relative to the container wall (16) can be adapted by means of the holding unit (18).