Open-End Spinning Air Intake Layout for Cleaner Fiber Separation
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Solution Overview
Problem
Existing open-end spinning devices face challenges in preventing the suction of fibers and dirt particles from the environment and in regulating the supply air flow effectively, leading to clogging and uneven dirt separation.
Innovation Solution
The design incorporates a cylindrical rotary valve with an inlet opening that widens or narrows in the peripheral direction, allowing for deflection-free regulation of the supply air flow, and positions the suction opening to avoid contamination from dirt transport belts and adjacent spinning stations, ensuring a laminar air flow for uniform fiber transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the supply air duct opens on the front side of the open-end spinning device, then the air flow can be easily accessible for adjustments, but the air flow is deflected by 90° and the supply air duct becomes clogged with fiber fly
Solution Approach 1:
The patent extracts the problematic 90° deflection from the air flow path by routing the supply air duct to open directly into the lateral area of the opening roller housing, eliminating the sharp angle that causes fiber accumulation and clogging while maintaining accessibility for adjustments
2Object-generated harmful factors
If the supply air duct ends in a lateral area of the opening roller housing to avoid deflection, then clogging is reduced, but fibers from the environment can be sucked in via the intake opening
Solution Approach 1:
The patent moves the supply air duct opening from the front horizontal plane to the lateral vertical plane of the opening roller housing. This dimensional change allows the air inlet to be positioned at a height where it is less susceptible to drawing in environmental fibers while still achieving deflection-free air flow into the housing
3Ease of operation
If a rotary valve is used to regulate the supply air flow, then the air flow can be adjusted, but the regulation can be difficult and the valve may not provide deflection-free flow
Solution Approach 1:
The patent employs a rotary valve mechanism that can be dynamically adjusted to different opening positions, allowing the supply air flow to be regulated. The rotary design enables smooth variation of the opening area while maintaining relatively simple construction compared to other flow control mechanisms
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 effectively prevents the suction of dirt and fibers, allows for sensitive regulation of the air flow, and ensures uniform dirt separation and fiber transport, reducing clogging and improving the overall efficiency of the spinning process.
Implementation Method 1
a dirt separation opening connected to ambient air is arranged, which enables a first supply air flow
Implementation Method 2
a suction opening which is connected to the ambient air and which enables a second supply air flow and which is connected to a bypass channel
Data Source
Figure 1
Figure 2~3
Figure 4~9
AI summary
In an open-end spinning device (1) with a dissolving roller (5) rotating in a dissolving roller housing (2), the dissolving roller housing (2) has a first side wall (15) defining an X-direction of the dissolving roller housing (2), in which a dirt separator opening (10) connected to ambient air is arranged, which allows a first supply air flow (12). Furthermore, the dissolving roller housing (2) has an intake opening (20) connected to ambient air, which allows a second supply air flow (13) and which is connected to a bypass channel (19) opening inside the dissolving roller housing (2), wherein the second supply air flow (13) is regulatory by means of a rotary valve (25). The rotary valve (25) is essentially cylindrical and has an inlet opening (27) on its circumferential surface (26), the width (BE) of which widens and/or narrows in the circumferential direction of the rotary valve (25).In a further embodiment, the intake opening (20) is arranged in a further side wall (16) or in an outer circumferential wall (18) of the dissolving roller housing (2) such that the second supply air flow (13) has at least one flow component in a Y direction oriented perpendicular to the X direction or is oriented completely in the Y direction.