Pump-Free Dyeing Centrifuge with Gravity-Driven Liquor Recirculation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wet treatment devices for textile make-ups are expensive, require high energy, and result in long process times, excessive liquor usage, and fiber compaction, with poor color penetration and risk of pump failure due to fiber contamination.
Innovation Solution
A wet treatment device with a pump-free recirculation line device that uses the rotation of the treatment drum to circulate liquor, reducing energy and liquor requirements, and featuring a ring-shaped duct for efficient liquor recirculation and minimal fiber compaction, along with a core drum for uniform liquor distribution and fiber retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pump is used to circulate liquor through the treatment drum, then liquor circulation is achieved, but the pump becomes blocked by discharged textile fibers causing reliability issues
Solution Approach 1:
The harmful element (pump) is extracted from the system. The patent replaces the pump with a pump-free recirculation system where liquor flows naturally from the treatment drum through gravity and pressure differential, eliminating the reliability issue of pump blockage by fibers while maintaining liquor circulation functionality
Solution Approach 2:
The system serves itself by using the treatment drum's rotation and pressure differential to drive liquor circulation without external mechanical assistance. The recirculation line device automatically channels liquor back to the drum base, creating a self-sustaining circulation loop that avoids fiber accumulation problems
2Productivity
If pump-assisted liquor circulation is used, then liquor is circulated through the material for dyeing, but a very large amount of liquor is required per unit amount of material for dyeing
Solution Approach 1:
The recirculation line device establishes continuous liquor circulation through the treatment drum without interruption. Liquor that has passed through the textile material is immediately redirected back to the drum base for renewed circulation, maximizing the utilization of each unit of liquor and reducing overall consumption while maintaining continuous dyeing action
Solution Approach 2:
The system uses hydraulic principles (pressure differential and gravity) to drive liquor circulation instead of mechanical pumping. This creates efficient fluid flow patterns that enhance liquor penetration through the material while minimizing the total volume of liquor required for effective dyeing
3Manufacturing precision
If the treatment drum is stationary, then equipment complexity is reduced, but liquor distribution uniformity and color penetration are poor
Solution Approach 1:
The treatment drum is made rotatable to create dynamic liquor distribution. The rotation motion generates centrifugal forces and pressure variations that promote uniform liquor penetration through the textile material, achieving consistent color distribution without requiring complex multi-nozzle systems or additional mechanical components
4Productivity
If traditional dyeing devices are used, then dyeing function is achieved, but process times are long and energy consumption is high
Solution Approach 1:
The treatment drum rotates periodically to create cyclic liquor flow patterns. This periodic motion enhances mass transfer between liquor and textile material, accelerating the dyeing process and reducing the time required to achieve uniform color penetration compared to static or continuously flowing systems
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
The solution achieves a 50% reduction in liquor and energy usage, shorter process times, improved color penetration, and reduced risk of pump failure, while maintaining high fiber quality and allowing for efficient rinsing and dewatering processes.
Implementation Method 1
As a result of rotation of the treatment drum about an axis of rotation, the liquor is accelerated outward
Implementation Method 2
the liquor is accelerated outward and, after passing through the textile fibers, emerges from the treatment drum
Data Source
AI summary
A wet treatment device (1) for the wet treatment of textile making-ups (T) has a treatment drum (10) which is driven about a vertical axis of rotation (A) in a direction of rotation (V) by a rotary drive. The treatment drum (10), which can be loaded at the top, has a drum shell (13) arranged on the circumferential side relative to the axis of rotation (A) and having an outlet opening (20). The latter opens into a return line device (30) which is arranged to be fixed against rotation and which has an annular channel (32) enclosing the treatment drum (10) radially and formed so as to be open in the direction of the outlet opening (20). In addition, the return line device (30) has a discharge opening (31), which is positioned above the drum base (11) and closer to the axis of rotation (A) than the first outlet opening (20). A rotating treatment drum arranged within a pressure vessel is also disclosed, as well as a method for the wet treatment of textile making-ups in a treatment drum, in which the liquor is led back into the center of the treatment from by a return line without using any drive.