Centrifugal Separator Drum Segmentation for Stable Hygienic Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing centrifugal separators face challenges in improving running properties and handling, particularly in maintaining stability and hygiene during continuous operation, especially when processing pharmaceutical products like fermentation broths.
Innovation Solution
The design incorporates an outer support device, or outer drum, made of metal, which stabilizes an inner drum made of plastic or plastic composite material. The outer drum surrounds the inner drum, reducing deflections and imbalance, allowing for easy replacement and disposal of the inner drum without extensive cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drum is designed as a single integrated structure made of plastic or plastic composite material for single-use, then hygiene is improved and cleaning is eliminated, but running properties and stability deteriorate due to material limitations and deflection issues
Solution Approach 1:
The drum is divided into two distinct parts: an inner drum made of plastic or plastic composite material that comes into contact with the product and can be disposed of after use, and an outer support device made of metal that provides structural stability and running properties and can be reused. This segmentation allows each component to be optimized for its specific function - the inner drum for hygiene and the outer support device for mechanical stability.
2Loss of time
If the entire drum is replaced after processing a product batch to maintain hygiene, then cleaning time is eliminated, but device complexity and handling difficulty increase
Solution Approach 1:
By segmenting the drum into a replaceable inner drum and a reusable outer support device, the system eliminates the need for cleaning the entire drum while simplifying handling. Only the inner drum needs to be removed and replaced, which is a straightforward operation compared to disassembling and cleaning a complex integrated drum structure.
Solution Approach 2:
The inner drum is designed as a disposable component made of plastic or plastic composite material that is replaced after processing each product batch. This eliminates cleaning time and simplifies hygiene management, while the expensive outer support device made of metal is reused, balancing cost and convenience.
3Ease of manufacture
If the drum walls are made thin to reduce material usage and cost, then manufacturing cost is reduced, but mechanical strength and stability deteriorate
Solution Approach 1:
The drum structure is segmented into an inner drum with thin walls made of plastic or plastic composite material and an outer support device with thicker walls made of metal. The thin-walled inner drum is sufficient for containing the product and maintaining hygiene, while the thick-walled outer support device provides the necessary mechanical strength and stability, allowing each component to be optimized for its specific requirements.
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
This design enhances the rotational stability and ease of handling, reduces the need for cleaning, and ensures hygiene by allowing the inner drum to be replaced as a single-use component, while maintaining efficient operation and cost-effectiveness.
Implementation Method 1
a centrifugal separator (2) for separating a flowable product into different phases or for clarifying a product, in a centrifugal field
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
A separator for the treatment of a flowable product by centrifugation, having a rotatable drum (2) which delimits a centrifuging space (15) and comprising, arranged in said drum (2), an agent for the clarification of a product to be treated in the centrifugal field, is characterized in that the drum (2) comprises an outer support and an inner drum (12) arranged in said outer support, and in that the agent for the clarification of the product to be processed in the centrifugal field is arranged in the inner drum (12).