Device for treating strand-shaped textile fabric in the form of an endless fabric strand
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Solution Overview
Problem
Existing long-storage machines for treating strand-like textile goods face challenges in achieving optimal transport conditions for various textile types without requiring significant modifications, particularly due to issues with reel-induced damage, speed matching, and limited nozzle gap adjustments, which affect the treatment efficiency and gentleness.
Innovation Solution
The device features a transport nozzle with a square nozzle inlet and outlet, an adjustable nozzle gap delimited by part-cylindrical nozzle elements, allowing for optimal transport of textile goods by the Venturi principle, which can be adjusted for different textile types, preventing compression and cavitation, and enabling both high-speed and gentle treatment without nozzle changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a reel is used to drive the goods strand, then the strand can be transported through the treatment container, but surface damage occurs due to grinding points and fabric shifts
Solution Approach 1:
The patent removes the reel component entirely from the system. Instead of using a reel to drive the goods strand, the invention uses a transport nozzle arrangement that propels the strand through the treatment container using a transport medium (liquid or gas), thereby eliminating the source of surface damage while maintaining transport functionality
Solution Approach 2:
The patent replaces the mechanical reel-driven system with a fluid-dynamic transport system. The transport nozzle arrangement uses a transport medium (liquid or gas) to propel the goods strand, substituting mechanical contact-based transport with fluid-based transport to avoid surface damage
2Productivity
If the nozzle gap is adjusted for heavy textile material at high speed, then high productivity is achieved, but the same nozzle cannot be used for light textile material requiring large nozzle gaps
Solution Approach 1:
The patent makes the nozzle gap dynamically adjustable through the axial displacement of the nozzle molding. This allows the nozzle gap to be changed continuously to match different textile material requirements, enabling the same transport nozzle to handle both heavy high-speed materials and light materials requiring larger gaps
Solution Approach 2:
The patent designs the transport nozzle with an adjustable nozzle gap mechanism that allows a single nozzle to perform multiple functions - handling different textile weights, speeds, and types by simply adjusting the gap size, eliminating the need for multiple specialized nozzles
3Device complexity
If a circular nozzle gap is used, then the nozzle structure is simple, but the pulling effect on the strand of fabric is limited
Solution Approach 1:
The patent transitions from a symmetric circular nozzle gap to an asymmetric rectangular nozzle gap configuration. This asymmetric design creates more effective flow patterns and pressure distribution that enhance the pulling effect on the fabric strand while maintaining structural simplicity
4Object-affected harmful factors
If the reel surface is smooth and free-running, then surface damage is reduced, but the pulling effect becomes rather low
Solution Approach 1:
The patent removes the reel component entirely, eliminating the trade-off between surface damage and pulling effect. The transport nozzle arrangement provides both the necessary propulsion force and gentle handling through fluid-based transport without mechanical contact
Solution Approach 2:
The patent uses a transport medium (liquid or gas) delivered through the transport nozzle to propel the goods strand. This pneumatic or hydraulic approach provides both sufficient pulling effect and gentle handling, avoiding the limitations of mechanical reel 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
This design ensures uniform transport, reduces damage to textile goods, and allows for intensive or gentle treatments based on the type of goods, maintaining efficiency across a wide range of textile weights and speeds without the need for nozzle exchanges, suitable for both long and short memory machines.
Implementation Method 1
allowing for optimal transport of textile goods by the Venturi principle
Data Source
Figure 1~2
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AI summary
A device for treating strand-shaped textile fabric in the form of an endless fabric strand, which is set in circulation at least during part of the treatment, has a closable treatment container (1) and a transport nozzle arrangement (14) which is able to be subjected to a transport medium flow. The transport nozzle arrangement contains a transport nozzle (40) having an angular, rectilinearly delimited nozzle inlet opening (47) and a cross-sectionally angular outlet part (48), having correspondingly adapted dimensions, for the fabric strand, between which a nozzle gap for the transport medium is delimited. The nozzle gap (52) is settable and delimited all around by straight nozzle elements (46) which have a substantially part-cylindrical cross-sectional shape.