Cleaning Rollers for Fibrous Material with Lower Half Elements
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Solution Overview
Problem
Existing fiber cleaning devices for short-staple spinning, particularly with natural fibers like cotton, face challenges in achieving high cleaning efficiency while minimizing fiber loss and damage, often resulting in contamination and complex transport systems due to serpentine fiber transport over multiple cleaning rollers.
Innovation Solution
A device with at least two cleaning rollers, each with cleaning elements on the lower half of their circumference, all rotating in the same direction, allowing for efficient waste collection and simplified transport, using grates or separating knives to separate impurities, and optionally adjusting peripheral speeds and distances between rollers for enhanced cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple cleaning rollers are arranged in sequence with serpentine fiber transport, then cleaning efficiency is improved, but device complexity increases due to different transport systems required for differently arranged cleaning elements
Solution Approach 1:
The invention applies homogeneity by arranging all cleaning elements exclusively in the lower half of the cleaning rollers' circumference. This uniform arrangement allows all cleaning rollers to use identical transport systems, eliminating the need for different transport mechanisms required by prior art designs with cleaning elements in both upper and lower halves. The standardized configuration simplifies the overall device structure while maintaining multi-stage cleaning capability.
Solution Approach 2:
The lower half arrangement of cleaning elements serves multiple functions: it enables waste to fall through into collection funnels by gravity, allows uniform transport systems to be used across all cleaning rollers, and simplifies the discharge mechanism. This universal arrangement eliminates the need for separate transport systems for different roller positions, resolving the complexity issue while preserving cleaning effectiveness.
2Productivity
If cleaning elements are arranged in both upper and lower halves of cleaning rollers, then cleaning coverage is improved, but waste transport and collection becomes more complex
Solution Approach 1:
The invention extracts the cleaning elements from the upper half of the cleaning rollers and relocates them exclusively to the lower half. This extraction simplifies the waste transport system because waste separated in the lower half can naturally fall through into collection funnels positioned beneath the rollers, eliminating the need for complex upward transport mechanisms required when cleaning elements are present in both upper and lower halves.
Solution Approach 2:
By positioning all cleaning elements in the lower half where waste can fall freely into collection funnels under gravity, the invention creates an equipotential waste discharge system. Waste separation and collection occur at the same gravitational potential level, eliminating the need for additional energy input or complex transport mechanisms to move waste against gravity.
3Productivity
If higher degree of cleaning is achieved, then impurity removal is improved, but fiber loss and fiber damage increase
Solution Approach 1:
The invention segments the cleaning process into multiple sequential stages using multiple cleaning rollers, each with its own set of cleaning elements. This segmentation allows for progressive removal of impurities at different levels, where each stage handles a portion of the cleaning task. This multi-stage approach improves overall cleaning efficiency while distributing the mechanical action across multiple gentler stages rather than relying on excessive force in a single stage, thereby reducing fiber damage.
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 achieves better cleaning efficiency with reduced contamination and simplified waste handling, allowing for standardized and efficient fiber material processing with minimized fiber loss and damage.
Implementation Method 1
The fibrous material is taken over by a cleaning roller from the respective preceding cleaning roller by its carrier
Implementation Method 2
waste in the fibrous material falling through the cleaning devices into a collection funnel
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a method and a device for cleaning fibrous material (1) with at least two cleaning rollers (4, 7), each with a cleaning roller axis (5, 8), and cleaning devices (6, 9) arranged opposite each cleaning roller (4, 7), wherein the cleaning rollers (4, 7) have drivers (13) on their circumference and are arranged one behind the other such that the fibrous material (1) is transferred from the preceding cleaning roller (4, 7) by its driver (13). All cleaning rollers (4, 7) are driven in the same direction, thereby transporting the fibrous material (1) on the lower circumferential half of each cleaning roller (4, 7) from one cleaning roller (4, 7) to the next and passing the cleaning devices (6, 9). The discharge (2) in the fibrous material (1) falls through the cleaning devices (6, 9) into a collecting hopper (14).