Chromatography Column End Cell Rotation for Maintenance Access

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Solution Overview

Problem

Maintenance and replacement of parts in chromatography columns are difficult due to the heavy components, requiring hoists for disassembly and assembly, which complicates the process and poses safety risks.

Innovation Solution

A stand system that allows the top end cell to be rotated 180 degrees, utilizing gravitational force to keep parts together, simplifying disassembly and maintenance without the need for additional devices, with adjustable fastening means to secure the column tube and end cells.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a hoist is used to separate heavy parts during maintenance, then the heavy parts can be lifted and handled, but the device complexity increases and safety risks arise

Engineering Contradiction:
Improveweight of end cellsVSAvoidmaintenance equipment
Core Design Contradiction:
Weight of moving objectVSDevice complexity

Solution Approach 1:

The chromatography column system performs its own maintenance by rotating the top end cell to an accessible position, eliminating the need for external hoisting equipment. The system uses its own structural components (rotation mechanism, positioning means) to enable maintenance workers to access and service heavy parts without requiring additional lifting equipment.

Inventive Principle:
Principle #25Self-service

2Weight of moving object

If a hoist is used to handle heavy parts, then the parts can be moved, but the maintenance process becomes more complex and time-consuming

Engineering Contradiction:
Improveweight of end cellsVSAvoidmaintenance time
Core Design Contradiction:
Weight of moving objectVSLoss of time

Solution Approach 1:

The top end cell is pre-equipped with a rotation mechanism and positioning means that allow it to be rotated to a maintenance-accessible position before any disassembly begins. This preliminary positioning action eliminates the need for time-consuming hoisting operations during the actual maintenance process, reducing overall maintenance time.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the top end cell is rotated to facilitate maintenance, then access to internal components is improved, but the structural complexity of the stand increases

Engineering Contradiction:
Improveaccess to componentsVSAvoidstand structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The stand structure is designed with multi-functionality: it provides both structural support for the chromatography column and incorporates a rotation mechanism that enables maintenance access. By integrating the rotation function into the existing stand structure rather than adding separate equipment, the patent minimizes structural complexity while achieving improved component accessibility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Facilitates safer and more convenient maintenance by allowing easy access to internal components without lifting heavy parts, reducing the need for hoists and improving operational safety and efficiency.

Implementation Method 1

the filter, net and distribution means will be kept together by gravitational force which will simplify disassembly of the different parts

Methodology Applied
Scientific EffectGravitational force: Gravitation

Data Source

PatentEP2864777B1Method and system for conducting maintenance on a chromatography column
Publication Date: 2021.01.20 CYTIVA SWEDEN AB
  • EP2864777B1 patent drawingFigure 1a
  • EP2864777B1 patent drawingFigure 1b
  • EP2864777B1 patent drawingFigure 1c

AI summary

A method for conducting maintenance on a chromatography column (1; 51), said column comprising a column tube (32), a top end cell (20) and a bottom end cell (26), where during chromatography said column tube (32) is secured between said top end cell (20) and said bottom end cell (26). Said method comprises the step of rotating at least the top end cell (20) 180 degrees around a horizontal axis before maintenance is conducted to the top end cell (20).