Chromatography Column Nozzle Pivot Positioning
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Solution Overview
Problem
Existing nozzle assemblies for chromatography columns face challenges in precise and easy control of nozzle tube positions, often requiring complex and costly mechanisms.
Innovation Solution
A nozzle assembly with a pivot base plate and spring-loaded pin system allows for easy adjustment of the nozzle tube into three distinct positions, reducing the need for complex mechanics and minimizing parts, ensuring accurate and convenient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a screwing mechanism is used to control nozzle tube position, then the nozzle tube can be positioned, but the positioning accuracy is poor and the mechanism is complex
Solution Approach 1:
The controlling means is segmented into a pivot base plate with multiple arms, each capable of independent rotation to specific positions. This segmentation allows precise positioning of the nozzle tube through discrete angular positions of the pivot arms, avoiding the complexity of continuous adjustment mechanisms while achieving accurate positioning.
Solution Approach 2:
The pivot base plate and arms are designed to rotate dynamically to different angular positions, allowing the nozzle tube to be positioned at multiple discrete locations. This dynamic rotation mechanism provides positioning accuracy without requiring complex screwing or threading mechanisms, resolving the contradiction between precision and complexity.
2Manufacturing precision
If a complex mechanism is used to control nozzle tube positions, then positioning accuracy may be improved, but the device becomes more expensive and difficult to operate
Solution Approach 1:
The controlling means is divided into multiple pivot arms that can be independently positioned. Each arm can be rotated to predetermined angular positions and locked, providing precise nozzle tube positioning while maintaining simple operation. The segmented design allows operators to easily adjust positions without complex procedures.
Solution Approach 2:
The pivot mechanism includes self-locking features at predetermined positions, allowing the nozzle tube to be automatically held in place without requiring additional locking operations. This self-service capability simplifies operation while maintaining manufacturing precision, as the mechanism itself ensures position accuracy without requiring complex operator intervention.
3Ease of manufacture
If a simple controlling mechanism is used, then the device is cheaper and easier to operate, but positioning accuracy deteriorates
Solution Approach 1:
The pivot base plate is segmented into multiple arms that can be independently positioned at predetermined angular locations. This segmentation enables precise positioning accuracy to be achieved with a simple rotational mechanism rather than complex linear adjustment systems, reducing manufacturing cost while maintaining or improving positioning precision.
Solution Approach 2:
The rotational pivot mechanism provides a simple yet effective way to achieve precise positioning. The dynamic rotation capability allows the nozzle tube to be accurately positioned at multiple discrete locations using basic mechanical components, avoiding the need for expensive precision linear adjustment mechanisms while maintaining high positioning accuracy.
Data Source
AI summary
A nozzle assembly (1) provided in a chromatography column (3), said nozzle assembly comprising a nozzle tube (21) through which chromatography media slurry is to be provided to the column (3). According to the invention said nozzle assembly (1) further comprises a pivot (39) connected in a first end (40a) to a pivot point arm (35), said pivot (39) can be pivoted into at least two different locked pivot positions and said pivot (39) being connected to the nozzle tube (21) such that a nozzle tip (25) of said nozzle tube is adjusted into at least two different locked nozzle tip positions corresponding to the at least two different locked pivot positions.