Bulk Material Transfer Connection Layout for Sterile Flow
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Solution Overview
Problem
Existing connection devices for transferring bulk material goods face challenges in maintaining sterility due to bacterial and contaminant accumulation along the flow direction, making cleaning and sterilization difficult.
Innovation Solution
A connection device with a through-passage frame and a holding bag, where the holding bag is guided from the rear side along the through-passage direction, with a connection region securely attached to the frame, ensuring the connection is arranged behind the passage, preventing obstruction and minimizing contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding bag is radially attached and welded to the outside of a pipe or flange piece along the through-passage direction, then the connection is secure and stable, but a shoulder or undercut is created in the flow direction where bacteria and contaminants can collect, making cleaning and sterilization difficult
Solution Approach 1:
The connection region is extracted from the through-passage flow path and positioned at the rear side of the through-passage frame. The holding bag is guided through the through-passage from the rear side to the connection side, with the connection region bearing against the connection side while the connection itself is arranged behind the through-passage. This extraction removes the connection from the flow path, preventing contaminant accumulation while maintaining secure connection.
Solution Approach 2:
The connection is repositioned from a radial attachment on the outside of the pipe to a rear-side arrangement behind the through-passage. By changing the spatial dimension of the connection location from radial/outside to rear/behind the passage, the design eliminates the shoulder or undercut that would otherwise trap contaminants in the flow direction.
2Device complexity
If the connection is arranged within or obstructing the through-passage, then the connection structure is simplified, but the flow of bulk material goods is interfered with and sterility cannot be maintained
Solution Approach 1:
The connection is extracted from the through-passage flow path and positioned at the rear side of the through-passage frame. This separation allows the connection structure to remain relatively simple while the holding bag is guided through the through-passage without obstruction, maintaining both structural simplicity and uninterrupted material flow.
3Object-affected harmful factors
If the holding bag is guided through the through-passage with the connection region bearing against the connection side, then sterility is maintained and cleaning is simplified, but the connection must be precisely positioned behind the through-passage
Solution Approach 1:
The holding bag is pre-guided from the rear side along the through-passage direction before the bulk material goods flow through. The connection region is positioned to bear against the connection side in advance, ensuring that the connection is established behind the through-passage before operation begins. This preliminary positioning action ensures sterility is maintained while the precision requirement is managed through the guided arrangement.
Data Source
AI summary
A connection device includes a through-passage frame to guide goods through a through-passage, and a holding bag providing the goods. The through-passage frame includes a connection side, a rear side, an inner surface facing the through passage, and an outer surface facing away therefrom between the connection side and the rear side. When connected, the connection side faces the receiving port, the rear side faces away therefrom, and a through-passage direction extends from the rear to the connection side. The holding bag includes a film-type main body on the rear side which has a connection region connected to the through-passage frame via a connection. The film-type main body is guided from the rear side along the through-passage direction, through the through-passage, to the connection side, so that the connection region bears at least partially against the connection side, and the connection is arranged behind the through-passage along the through-passage direction.