Trough-Shaped Nozzle Bar for Hydroentanglement Jet Focusing
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Solution Overview
Problem
Existing nozzle bars for hydroentanglement devices do not achieve optimal results due to suboptimal jet guiding and energy distribution, leading to inefficiencies and increased fluid consumption.
Innovation Solution
A nozzle bar with a hollow housing and a nozzle strip having a trough-shaped cross section, where the nozzle body is arranged retracted in the jacket opening, allowing for improved jet focusing, reduced free jet length, and increased jet density, enabling better energy utilization and entanglement efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional nozzle strip is used in the housing, then the structure is simple, but the jet guiding is poor and energy losses increase
Solution Approach 1:
The nozzle strip is given a trough-shaped cross-section with curved surfaces that guide the fluid jets smoothly from the housing interior to the discharge location. This curvature optimizes flow paths, reduces turbulence, and minimizes energy losses while maintaining structural integrity.
Solution Approach 2:
The nozzle strip extends beyond the jacket opening in the axial direction, creating a three-dimensional discharge structure. This dimensional extension allows for optimized jet discharge positioning and improved jet guiding without increasing the housing complexity.
2Loss of energy
If the free jet length is increased, then the jet action is improved, but the divergence phenomena increase and energy is lost
Solution Approach 1:
The nozzle strip discharge location is positioned at an optimized distance from the housing interior, and the jet discharge angle is adjusted through the trough-shaped configuration. These parameter changes reduce jet divergence and minimize energy losses while maintaining effective jet action on the material web.
3Quantity of substance
If multiple rows of nozzle orifices are arranged closely, then the jet density increases, but the jets interfere with each other
Solution Approach 1:
The trough-shaped nozzle strip creates localized flow channels for each jet, with the curved surfaces guiding individual jets separately. This local flow management allows multiple rows of nozzle orifices to be arranged closely without jet interference, as each jet maintains its own flow path.
4Volume of moving object
If the nozzle bar arrangement is tightened, then the device compactness increases, but the jet guiding becomes more difficult
Solution Approach 1:
The curved trough-shaped nozzle strip guides jets efficiently even in compact arrangements by providing smooth flow paths that reduce turbulence and energy losses. This allows tightened nozzle bar arrangement without compromising jet guiding efficiency.
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 enhances jet guiding, reduces energy losses, minimizes splash water, and optimizes air guiding, resulting in improved entanglement effects, reduced fluid consumption, and increased cost-effectiveness.
Implementation Method 1
The fluid jets being discharged, and especially water jets, can be focused narrowly and sharply
Data Source
AI summary
A jet manifold (10) and a method for a hydroentanglement device (1) are provided. The jet manifold (10) has a hollow housing (11) that includes a housing shell (12). An opening (13) is provided in the housing shell. A nozzle strip (16) is located in the housing (11) and has a tub-shaped cross-section with a nozzle body (19). The nozzle body (19) is recessed in the opening (13) in the housing shell.