Dual-Seal Mixing Container Interface for Rotation Leakage Control
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Solution Overview
Problem
Existing mixing devices face challenges in maintaining effective seals, particularly when mixing containers are rotated, leading to potential escape of mixing material and difficulties in cleaning the seal.
Innovation Solution
The implementation of a dual-seal system with a first and second seal arranged to form a first air space between them, enhanced by the use of elastic seals and fluid passages for flushing and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single seal is used between the mixing container and mixer cover, then the device complexity is low, but the sealing integrity deteriorates when the mixing container rotates
Solution Approach 1:
The sealing system is divided into multiple independent seals (first seal and second seal) arranged in sequence between the mixing container and mixer cover. Each seal operates independently to provide redundant sealing, ensuring that if one seal fails or loses contact pressure, the other maintains sealing integrity. This segmentation directly resolves the contradiction by improving reliability through multiple seals while accepting increased device complexity.
2Productivity
If the mixing container is rotated during mixing operation, then the mixing efficiency is improved, but the seal contact pressure decreases leading to material escape
Solution Approach 1:
The design incorporates elastic sealing elements that are pre-compressed to store elastic energy, creating a cushioning effect that compensates for contact pressure loss during rotation. The elastic material continuously pushes against the mixing container surface, maintaining sealing pressure even when centrifugal forces reduce the normal contact pressure. This beforehand cushioning resolves the contradiction by preserving seal reliability during high-productivity rotating operations.
3Object-affected harmful factors
If a single seal is used, then the ease of cleaning is high, but the risk of material escape into surroundings increases
Solution Approach 1:
A cleaning fluid passage system is introduced as an intermediary mechanism that delivers cleaning fluid directly to the seal interfaces. This allows effective cleaning of multiple seals without requiring disassembly, resolving the contradiction by reducing material escape risk through multiple seals while maintaining cleaning ease through the intermediary fluid delivery system.
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 configuration significantly enhances sealing integrity, reduces the risk of mixing material escape, and facilitates easier cleaning of the seals, particularly in applications involving rotating mixing containers.
Implementation Method 1
arranged between the mixing container and the mixer cover are the first and a second seal which are so arranged that a first air space is formed between the first and the second seal
Implementation Method 2
particular attention has to be paid to ease of cleaning the seal between the mixer cover and the mixing container
Data Source
AI summary
A mixing device includes a mixing container for receiving mixing material and a mixer cover, wherein a first seal and a second seal is provided between the mixing container and the mixer cover. The first seal and the second seal are so arranged that a first air space is formed between the first seal and the second seal.