Butterfly Valve Filtration for Closed-Loop Silica Replacement
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Solution Overview
Problem
Chromatographic columns in the pharmaceutical industry pose health risks to operators due to silica saturation, necessitating protective equipment and unsafe manual handling during silica replacement and restoration, especially for female operators.
Innovation Solution
A butterfly valve with a filter net and actuation means is integrated into the chromatographic column, allowing safe and automated silica replacement within a closed-loop system, preventing direct contact with active silica.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual handling and replacement of silica is performed in conventional chromatographic columns, then the column can be restored and silica replaced, but operators face health risks and require protective equipment
Solution Approach 1:
A discharge cone is introduced as an intermediary device between the silica and the operator. The cone receives the silica when the column is overturned and channels it into a container, preventing direct contact between the operator and the silica while enabling the restoration process
Solution Approach 2:
The harmful element (silica) is extracted from the direct path between the column and the operator through the discharge cone mechanism. The cone separates the silica flow from the operator's position, allowing the restoration to proceed without exposing operators to health risks
2Object-affected harmful factors
If operators wear protective equipment for silica handling, then health safety is improved, but operational convenience and efficiency deteriorate
Solution Approach 1:
The discharge cone serves as a mediator that eliminates the need for protective equipment by preventing direct contact with silica. Operators can handle the column and perform restoration without gloves, masks, or chemical protective suits, significantly improving operational convenience while maintaining safety
3Ease of manufacture
If silica is removed and replaced manually, then the column can be restored, but the process requires operator involvement and supervision
Solution Approach 1:
The column is designed to perform self-service restoration through the discharge cone mechanism. When the column is overturned, gravity automatically causes the silica to flow into the discharge cone and then into a container, eliminating the need for operator intervention in the actual silica removal process
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
Enables safe and reliable silica replacement without protective gear, facilitating operation in unprotected environments and reducing health hazards for operators.
Implementation Method 1
The disc 4 comprises a filter net 10 configured to allow the passage of the analyte or of the active ingredient to be isolated while preventing the passage of the stationary phase, such as silica
Implementation Method 2
In general, in chromatography processes, a solvent, called the mobile phase, is used to dissolve a sample of a soluble mixture and to transport the mixture through an adsorbent solid, referred to as the stationary phase
Implementation Method 3
the mixture is separated and the active ingredient is isolated: some components of the mixture are transported by the solvent through the solid more quickly than others
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A butterfly valve for a chromatographic column comprises a body (2) provided with a disc (4), rotatably constrained to the body (2), with a fixed perimeter element (3) delimiting the disc (4) and with at least a seal positioned between the perimeter element (3) and the disc (4), wherein the body (2) is connected to means (5) of actuation of the valve (1), wherein the disc (4) comprises a filter net (10).