Aseptic Corner Pipe Filter With Bellows-Sealed Valve Rod
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Solution Overview
Problem
Current corner tube sieves in UHT systems face challenges in safe and reliable cleaning and sterilization under aseptic conditions without removing the sieve insert, which can lead to contamination risks.
Innovation Solution
A corner tube screen design featuring a selectively switchable flow path controlled by a translationally displaceable closing element with a bellows-sealed valve rod and a floating bearing mechanism, allowing for aseptic cleaning and sterilization without disassembling the sieve insert, utilizing a bellows to prevent contamination and ensure effective cleaning of all bearing surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the corner tube sieve is cleaned by dismantling the sieve insert, then cleaning effectiveness is improved, but contamination risk increases
Solution Approach 1:
The invention segments the cleaning function from the filtration function by introducing a separate cleaning agent flow path through the annular space between the sieve insert and housing. This allows cleaning to occur without dismantling the sieve insert, maintaining aseptic conditions while achieving effective cleaning of the screening surface.
Solution Approach 2:
The annular space acts as an intermediary channel that allows cleaning agents to access the sieve insert without requiring disassembly. The cleaning agent flows through this intermediate space, enabling effective cleaning while keeping the sieve insert in place and maintaining contamination barriers.
2Adaptability or versatility
If a rotary mechanism is used to control the passage opening, then flow path switching is achieved, but device complexity increases
Solution Approach 1:
The invention replaces the complex rotary mechanical mechanism with a simpler linearly displaceable closing element that opens or closes the passage opening through axial movement. This substitution reduces mechanical complexity while maintaining the ability to switch between filtration and cleaning flow paths.
3Object-affected harmful factors
If a flushing lock is continuously exposed to disinfectant, then aseptic conditions are maintained, but ease of operation worsens
Solution Approach 1:
The invention incorporates a bellows that pre-seals the flushing lock passage before cleaning operations begin. This preliminary sealing action prevents disinfectant leakage and eliminates the need for continuous manual monitoring or adjustment of the flushing lock, simplifying operation while maintaining aseptic conditions.
Solution Approach 2:
The bellows acts as a flexible sealing element that automatically adapts to pressure changes during cleaning operations. This flexible membrane seals the flushing lock passage effectively without requiring complex mechanical adjustments, making the system easier to operate while maintaining disinfectant containment.
4Stability of the object's composition
If the sieve insert is fixed in position, then structural stability is improved, but cleaning effectiveness deteriorates
Solution Approach 1:
The invention introduces controlled mobility to the sieve insert by allowing it to shift axially within the housing during cleaning operations. This dynamic adjustment enables the cleaning agent to access all surfaces of the sieve insert effectively, while the insert returns to its fixed filtration position when not being cleaned, maintaining structural stability during normal operation.
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, reliable, and efficient automatic cleaning and sterilization of the corner tube screen under aseptic conditions, preventing contamination and ensuring thorough cleaning of all critical areas, thereby maintaining product integrity.
Implementation Method 1
the passage of the valve rod through the housing cover is bridged with a bellows which encloses the valve rod concentrically
Implementation Method 2
which is controlled in the area of the through-opening by a translationally displaceable closing element
Data Source
Figure 1
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AI summary
The filter has a passage opening (5e) opened or closed by a translatory, relocatable closing unit (4a) working together with two seat surfaces (4c, 5f). The closing unit is connected with a remote controlled drive (3) by a valve rod (4e) that is placed through a housing cover. Bellows surround the valve rod and are connected with the closing unit on one side and with the housing cover on another side. A filter insert is supported in an open position of the closing unit in a floating manner. An independent claim is also included for a method for automatic cleaning of a corner tube filter.