Method and apparatus for treating cloths
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for treating cloths in a rotating drum using chemical dispersions often result in liquid-induced defects and inhomogeneities, with the liquid being delivered as a precipitate rather than a spray, leading to inefficiencies and quality issues in textile processing.
Innovation Solution
A method involving a rotatable drum with angled paddles and reversible rotation to ensure the chemical dispersion is delivered as a spray, optimizing the exposure and absorption of the chemical treatment across all cloths, preventing precipitation and ensuring uniform treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If chemical dispersion is sprayed onto cloths within a rotating drum, then liquid consumption is reduced and treatment space is minimized, but liquid-induced defects and inhomogeneities occur on the cloth surface
Solution Approach 1:
The drum rotation direction is dynamically reversed during the treatment process. The method involves rotating the drum in a first direction for a first time period, then reversing to rotate in a second direction for a second time period. This dynamic reversal prevents liquid accumulation in one location and ensures uniform distribution of chemical dispersion across all cloths, eliminating spots and inhomogeneities while maintaining reduced liquid consumption.
Solution Approach 2:
The treatment process uses periodic alternation between forward and reverse rotation phases. By cycling through different rotation directions in periodic intervals, the system ensures that all areas of the drum and all cloths receive equivalent exposure to the chemical dispersion spray, achieving homogeneous treatment without requiring excessive liquid.
2Volume of stationary object
If the drum volume is kept small to save space, then the system occupies less area, but the chemical dispersion may precipitate or uncontrollably change before reaching the cloths
Solution Approach 1:
The rapid reversal of drum rotation direction creates continuous motion that prevents the chemical dispersion from settling or precipitating. The dynamic switching between rotation directions ensures the dispersion remains in constant circulation throughout the compact drum volume, maintaining its compositional stability and preventing unwanted changes even in the limited space.
Solution Approach 2:
The system changes the operational parameters of the drum by reversing rotation direction. This parameter change (from positive to negative rotation) disrupts any tendency toward precipitation or phase separation, keeping the chemical dispersion stable and homogeneous throughout the treatment cycle within the compact drum.
3Reliability
If more liquid is sprayed to ensure adequate treatment, then treatment effectiveness improves, but liquid precipitates before absorption by the cloths
Solution Approach 1:
The dynamic reversal of drum rotation ensures that liquid sprayed onto the cloths is continuously redistributed rather than allowing accumulation and precipitation. The alternating rotation directions create a dynamic environment where excess liquid is constantly moved and re-distributed, maintaining treatment effectiveness while preventing phase separation and ensuring all cloths receive uniform treatment.
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 approach provides a homogeneous and efficient application of chemical treatments, reducing defects and chemical usage, while allowing for better control over the treatment process, resulting in improved quality and reduced environmental impact.
Implementation Method 1
the drum comprising a plurality of paddles which are attached to the interior surface of the drum, wherein for each of at least two of said plurality of paddles the paddle's longitudinal axis forms an angle a of between 5 degrees and 85 degrees with the geometrical orthogonal projection of said paddle's longitudinal axis on a geometrical plane which is normal to the drum's longitudinal axis
Implementation Method 2
rotating the drum about its longitudinal axis, and reversing the rotational direction about the drum's longitudinal axis at least one time
Implementation Method 3
treating cloths by spraying with a chemical dispersion comprising a liquid
Data Source
Figure 1A~2
Figure 3~4
Figure 5~6
AI summary
Method and apparatus for treating cloths by spraying with a chemical dispersion comprising a liquid, the method comprising: inserting the cloths in a rotatable drum (1) adapted for being rotated about its longitudinal axis (LP), the drum comprising a plurality of paddles (4) attached to the drum's interior surface, wherein for each of at least two of said paddles the paddle's longitudinal axis forms an angle a of between 5 degrees and 85 degrees with the geometrical orthogonal projection (OP) of said paddle's longitudinal axis on a geometrical plane which is normal to the drum's longitudinal axis; rotating the drum about its longitudinal axis, and reversing the rotational direction about the drum's longitudinal axis at least one time, and during at least part of the duration of rotating spraying the interior of the drum with the chemical dispersion. The apparatus comprises: said drum (1), rotation means (5), spraying means (14), a dispersion supply system (15).