Bayonet Lock Suction Nozzle for Ring Spinning Pressure Loss Reduction
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Solution Overview
Problem
Existing thread suction devices in ring spinning machines have complex and cost-intensive interchangeable suction nozzle attachments, which complicate production and lead to inefficiencies in the spinning process.
Innovation Solution
A bayonet lock mechanism is used, where the suction nozzle has an inner and outer tubular extension that engages with the suction pipe to create a gap seal, allowing for easy and quick attachment and detachment, ensuring correct positioning and minimizing pressure losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If snap connection is used for attaching suction nozzle to suction pipe, then the attachment is replaceable and adjustable, but the connection requires relatively large force to release and loses holding effect over time
Solution Approach 1:
The connection mechanism is divided into two functional parts: the bayonet lock mechanism for secure mechanical locking, and the gap seal for maintaining suction tightness. This segmentation allows each component to specialize in its function, with the locking mechanism providing reliable attachment and the seal preventing air leaks.
Solution Approach 2:
The bayonet lock incorporates a locking angle that exceeds the minimum required for basic connection, providing excessive locking action that ensures reliable holding effect. The angular engagement creates multiple contact points and distributes mechanical stress, preventing the connection from loosening during operation.
2Adaptability or versatility
If complex interchangeable suction nozzle attachment devices are used, then the suction nozzle can be exchanged, but the production becomes complex and costly
Solution Approach 1:
The invention merges the locking function and sealing function into a single integrated bayonet lock mechanism. The tubular extension with axial and radial contact surfaces simultaneously provides mechanical locking and maintains the gap seal, eliminating the need for separate locking components and simplifying the overall device structure.
Solution Approach 2:
The bayonet lock mechanism serves multiple functions: it provides secure mechanical attachment, maintains the gap seal through the tubular extension, and enables quick exchange of suction nozzles. This multi-functionality reduces the number of separate components needed and simplifies the attachment device.
3Loss of energy
If gap seal is provided through tubular extensions, then pressure losses are minimized, but the attachment mechanism becomes more complex
Solution Approach 1:
The locking mechanism and gap seal are merged into a single integrated structure. The tubular extension with its axial and radial contact surfaces simultaneously provides mechanical locking and maintains the sealing gap, eliminating the need for separate sealing components and reducing overall complexity.
Solution Approach 2:
The gap seal utilizes the flexible deformation of the tubular extension under compression. When the suction nozzle is attached, the tubular extension deforms elastically to maintain contact with the suction pipe surface, creating an effective seal without requiring additional sealing elements.
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 bayonet lock simplifies the attachment process, ensures correct nozzle positioning, reduces energy consumption by minimizing pressure losses, and allows for adaptable suction nozzle designs to suit different fiber materials, enhancing the overall efficiency of the thread suction device and ring spinning machine.
Implementation Method 1
minimizing pressure losses
Implementation Method 2
remove dust and fly lint
Data Source
Figure 1
Figure 2~3
Figure 4~6
AI summary
The invention relates to a ring spinning machine (1) with a plurality of spinning stations (4) positioned side by side on both sides of the machine's longitudinal axis, each equipped in the output area of a drafting unit (5) with a multi-part yarn breakage extraction device (9), which has a retaining sleeve (15) connected to a machine-length extraction channel (12) of the ring spinning machine (1), an extraction tube (13) that can be fixed in the retaining sleeve (15) and a suction nozzle (11) arranged on the extraction tube (13), which can be interchangeably fixed on the extraction tube (13) by means of a locking device (24; 27).According to the invention, the suction nozzle (11) has an inner tubular extension (21) which engages in the suction pipe (13) in the assembly state and has an outer tubular extension (22) which, in the assembly state, encompasses the suction pipe (13) in such a way that a gap seal is provided and the locking device (24; 27) is designed as a bayonet lock (16; 25).