Spinning Preparation Machine Convex Perforated Element
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Solution Overview
Problem
Existing spinning preparation machines face challenges in separating fiber material from transport air, leading to uneven filling of shafts and increased risk of blockages due to uncontrolled air permeability changes during operation.
Innovation Solution
A spinning preparation machine design featuring a shaft mixer with a distribution channel separated from the transport air outlet by a convex perforated element, which accelerates the fiber-air mixture and ensures even distribution of fibers, minimizing the risk of blockages and maintaining constant pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air-permeable walls are used in each shaft for separating fiber material from transport air, then fiber separation is achieved, but the risk of blockages increases and uneven filling of shafts occurs due to changing air permeability
Solution Approach 1:
The mixer is divided into multiple shafts (at least two shafts) that are arranged side by side and connected to a common distribution channel. Each shaft acts as an independent segment for fiber separation, allowing the system to maintain reliable fiber-air separation while distributing the blockage risk across multiple segments rather than a single permeable wall system.
Solution Approach 2:
The air-permeable wall function is extracted from individual shafts and replaced by a centralized distribution channel with multiple outlets. The separation function is now performed by the channel structure itself rather than by permeable walls within each shaft, eliminating the blockage-prone permeable wall component while maintaining the fiber separation capability.
2Reliability
If air-permeable walls are used in each shaft, then fiber material can be separated from transport air, but uneven filling of shafts occurs due to pressure conditions
Solution Approach 1:
The distribution channel serves multiple functions simultaneously: it conveys the fiber-air mixture, distributes fibers evenly to multiple shafts, and maintains pressure equilibrium across all shafts. This multi-functional design replaces the need for individual air-permeable walls in each shaft while ensuring uniform filling through the common channel's pressure-stabilizing effect.
Solution Approach 2:
The common distribution channel creates equipotential pressure conditions across all shafts by providing a shared air supply path. The channel equalizes pressure differences that would otherwise cause uneven filling, ensuring that all shafts receive fiber material uniformly without the need for individual pressure-regulating permeable walls.
3Stability of the object's composition
If shafts are arranged with varying lengths to achieve mixing, then fiber mixing is improved, but the complexity of separating fiber material from transport air increases
Solution Approach 1:
The mixing function is achieved by segmenting the fiber flow into multiple shafts of varying lengths, while the separation function is simplified through a common distribution channel. This segmentation approach allows different shaft lengths for mixing purposes while maintaining a simple, unified separation system that does not increase overall complexity.
Solution Approach 2:
The separation system merges all shafts into a single common distribution channel structure. This merging simplifies the separation mechanism by eliminating the need for individual separation systems in each shaft, reducing overall device complexity while preserving the varying shaft lengths needed for effective fiber mixing.
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 effectively separates transport air from fibers, ensuring even filling of shafts and reducing the risk of clogging, while the convex shape and predictable flow conditions promote efficient mixing and removal of fibers.
Implementation Method 1
The convex shape of the perforated element causes the fiber-air mixture to accelerate in the upper section of the distribution channel upstream of the perforated element
Implementation Method 2
a transport channel serves as the filling device, through which the fiber material is conveyed as a fiber-air mixture into the distribution channel
Implementation Method 3
the airflows generated in the distribution channel by the arrangement and shape of the perforated element, as well as the resulting pressure conditions in the individual shafts, promote a uniform distribution of the incoming fibers into the shafts
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a spinning preparation machine (1) for mixing fibers, comprising a suction device (25) for extracting air from the spinning preparation machine (1) and a filling device for filling the spinning preparation machine (1) with fibers, wherein the spinning preparation machine (1) is designed as a shaft mixer with at least two shafts (2-5). The filling device has a fiber inlet (6) and a transport air outlet (8) with a transport air outlet channel (9) and a distribution channel (11) extending from the fiber inlet (6) to the transport air outlet (8) via the at least two shafts (2-5). The distribution channel (11) is separated from the transport air outlet (8) by a perforated element (12), wherein the perforated element (12) has a convex shape facing the direction of the transport air outlet (8).