Chromatography Column Maintenance Without Hoists
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Solution Overview
Problem
Industrial-scale chromatography columns require maintenance that involves heavy lifting and exposure to suspended loads, posing safety risks to operators and imposing constraints on space and alignment, especially in clean environments where microbiological contamination must be avoided.
Innovation Solution
A method and apparatus for chromatography columns that allow for maintenance without heavy lifting equipment, using a drive system with cylinders to lift and separate adapter and base assemblies, providing a gap for access and allowing for the use of handling devices to support and remove heavy components without tilting, thus reducing operator exposure to suspended loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If heavy lifting equipment such as cranes or hoists is used to disassemble the column, then the adapter assembly and column tube can be lifted away from each other for maintenance, but operator safety is compromised and alignment structures are required to prevent damage to precision components
Solution Approach 1:
The column is divided into separable assemblies (adapter assembly, column tube, base assembly) that can be independently moved and maintained. The adapter assembly can be detached from the column tube, allowing maintenance of internal components without requiring heavy lifting equipment to separate the entire column structure.
Solution Approach 2:
A removable bed support assembly acts as an intermediary component that can be easily accessed and maintained. This assembly includes a support plate, distributor, and mesh that can be removed through the open end of the column tube without requiring disassembly of the entire column structure or use of heavy lifting equipment.
2Ease of operation
If heavy lifting equipment is used to disassemble the column, then the adapter assembly and column tube can be separated for maintenance, but alignment structures are required to keep components axially aligned, imposing significant obstructions around the tube
Solution Approach 1:
The column is segmented into modular assemblies that can be independently handled. The adapter assembly and base assembly are designed as separate units that can be moved without requiring complex alignment structures, as each assembly can be independently positioned and maintained.
Solution Approach 2:
Instead of requiring the entire column to be lifted and aligned during maintenance, the design allows the adapter assembly to be detached and the column tube to remain in place. This inverts the traditional maintenance approach by keeping the heavy column tube stationary while accessing internal components through the open end.
3Ease of operation
If the column is moved to another room for disassembly and maintenance, then heavy lifting equipment can be used, but the requirement to clean and verify the column before returning it for use adds significant time and complexity
Solution Approach 1:
The column design allows maintenance to be performed in-place without requiring relocation to another room. The adapter assembly can be detached and internal components accessed through the open end of the column tube, enabling maintenance activities to be conducted within the same clean environment without time-consuming relocation and re-verification procedures.
4Ease of operation
If the adapter assembly is lifted above the column tube for maintenance access, then internal components can be accessed, but the operator must work below a suspended load which poses significant safety risks
Solution Approach 1:
Instead of lifting the adapter assembly above the column tube for maintenance access, the design allows the adapter assembly to be detached and the column tube to remain stationary. Internal components can be accessed through the open end of the column tube from below, eliminating the need for operators to work below suspended loads.
Solution Approach 2:
The bed support assembly is extracted as a separate, removable component that can be accessed and maintained independently. This assembly can be removed through the open end of the column tube without requiring the entire adapter assembly to be lifted, thereby eliminating safety risks associated with working below suspended loads.
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
Enhances operator safety by eliminating the need for heavy lifting equipment and reducing exposure to suspended loads, facilitating easier and safer maintenance of chromatography columns, especially in clean environments where space constraints are a concern.
Implementation Method 1
said drive system comprising one or more cylinders
Data Source
AI summary
A chromatography column and method of maintenance is described which does not require the use of a hoist or crane for disassembly. The method provides improved operator safety by reducing the need for the operator to work below a suspended or supported load within the column. Furthermore, the removal or replacement of column components is facilitated by providing access to the interior of the column and by the provision of a handling device.