Stirring Apparatus Guide Rod Vibration Stabilization

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Solution Overview

Problem

Existing stirring arrangements in biogas plants and similar containers face instability issues due to the lack of resistance to external influences, particularly when dealing with viscous materials, which can cause the guide rod to vibrate and potentially damage the equipment.

Innovation Solution

A longitudinally displaceable sleeve is mounted on both the support column and guide rod, allowing for variable distance adjustment between the sleeve and the electric motor, providing mutual stabilization and preventing vibration of the guide rod.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the guide rod is made lighter to reduce overall weight, then the weight of the stirring arrangement is reduced, but the guide rod becomes more susceptible to vibration and damage from viscous materials

Engineering Contradiction:
Improveweight of stirring arrangementVSAvoidstability of guide rod
Core Design Contradiction:
Weight of moving objectVSReliability

Solution Approach 1:

A stabilizing element (cuff/sleeve) is introduced as an intermediary component between the support column and guide rod. This stabilizing element provides additional support to the guide rod, enabling it to resist vibrations from viscous materials while keeping the guide rod itself lightweight. The stabilizing element acts as a mediator that transfers stability from the robust support column to the lighter guide rod.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the guide rod is made stronger to resist vibration, then the stability and reliability of the guide rod is improved, but the overall weight of the stirring arrangement increases

Engineering Contradiction:
Improvestability of guide rodVSAvoidweight of stirring arrangement
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The support structure is segmented into distinct functional components: a robust support column for overall structural support, a lighter guide rod for precise positioning, and a stabilizing element (cuff/sleeve) that provides localized reinforcement. This segmentation allows each component to be optimized for its specific function, with the guide rod remaining lightweight while the stabilizing element provides the necessary vibration resistance.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If the electric motor is mounted longitudinally displaceable on the support column to adjust position, then the adaptability of the stirring arrangement is improved, but the stability of the motor position may be compromised

Engineering Contradiction:
Improveposition adjustment capabilityVSAvoidstability of motor position
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The stabilizing element (cuff/sleeve) serves as an intermediary that provides stable positioning for the electric motor while allowing longitudinal displacement. The motor can move along the support column for position adjustment, and the stabilizing element ensures that the motor maintains a stable and precise position during operation, preventing unwanted vibrations or positional drift.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3202490B1Stirring apparatus
Publication Date: 2019.11.27 THURWACHTER GMBH & CO
  • EP3202490B1 patent drawingFigure 1
  • EP3202490B1 patent drawingFigure 2~4

AI summary

The invention relates to a stirring arrangement 10, which has a support column 20, a guide rod 30 parallel thereto and an electric motor 40 with a propeller 42, wherein the electric motor is mounted longitudinally displaceable on the support column and a number of clamping holders 50 for a connecting cable of the electric motor are mounted longitudinally displaceable on the guide rod.