Spun Yarn Drawing Apparatus Sealing Member Gap Closure
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Solution Overview
Problem
The existing spun yarn drawing apparatus experiences uneven airflow within the thermal insulation box due to gaps between plate members and the door member, leading to irregular yarn quality and increased power consumption.
Innovation Solution
The apparatus incorporates sealing members to close the gaps between plate members and the door member, and a communication passage to facilitate controlled heat transfer between high-temperature and low-temperature spaces, while using shutters to adjust airflow and heat transfer based on conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If plate members are provided to be separated from the door member to prevent contact, then the door member can be properly closed, but a gap is formed that generates airflow causing uneven temperature distribution
Solution Approach 1:
A flexible sealing member (rubber or silicone material) is attached to the plate member to close the gap between the plate member and door member when the door is closed. The flexible material deforms to fill the gap while allowing the door to close properly, preventing harmful airflow without rigid contact.
Solution Approach 2:
The sealing member acts as an intermediary element between the plate member and door member, enabling the door to close while maintaining separation of the plate member from the door member body, thus preventing both contact interference and harmful airflow.
2Temperature
If plate members protrude forward to adjust airflow, then airflow distribution improves, but contact with the door member prevents proper closing
Solution Approach 1:
The flexible sealing member allows the plate member to protrude forward for airflow adjustment while enabling the door to close by having the sealing material deform to bridge the gap, thus resolving the conflict between airflow adjustment and door closing.
Solution Approach 2:
The sealing member transitions from a static gap to a dynamic seal that adapts when the door closes, allowing the plate member position to be adjusted for airflow control while maintaining sealing capability during door closure.
3Temperature
If gaps exist between plate members and door member, then airflow is generated for heat distribution, but uneven airflow causes irregular yarn quality
Solution Approach 1:
The harmful airflow path through the gap is extracted and eliminated by introducing the sealing member, removing the source of uneven airflow that causes yarn quality irregularities while preserving necessary heat distribution through other means.
Solution Approach 2:
The flexible sealing member eliminates the gap that causes harmful airflow, ensuring uniform airflow and consistent temperature distribution across the yarn path, thereby improving yarn quality uniformity while allowing controlled heat distribution.
4Temperature
If sealing members are added to close gaps, then airflow uniformity improves, but device complexity increases
Solution Approach 1:
A simple flexible sealing member (rubber or silicone strip) is attached to the plate member, providing an effective seal with minimal structural complexity. This straightforward solution closes the gap to improve airflow uniformity without significantly complicating the device.
Solution Approach 2:
The sealing member is a simple, inexpensive component that can be easily replaced if needed, providing an cost-effective solution to improve airflow uniformity without adding complex or expensive mechanisms to the device.
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 solution ensures uniform airflow and heat distribution, maintaining yarn quality and reducing power consumption by preventing airflow unevenness and optimizing heat transfer.
Implementation Method 1
a sealing member closing a gap between one end on the one side of the plate member and the door member in the closed state
Implementation Method 2
at least one heating roller which is housed in the thermal insulation box so that an axis of the at least one heating roller is parallel to the predetermined direction, yarns being wound onto an outer circumferential surface of the at least one heating roller
Data Source
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AI summary
An airflow in a thermal insulation box is restrained from becoming uneven in the axial direction of a heating roller, when a plate member is provided in a thermal insulation box of a spun yarn drawing apparatus. A plate member 41 is provided to protrude forward from the back surface of the thermal insulation box in which the front surface is arranged as a door member 27 and to be separated from the door member 27 in a closed state. A gap between the front end of this plate member 41 and the door member 27 in the closed state is closed by a sealing member 61. This restrains an airflow in the axial direction of the heating roller (i.e., in the front-rear direction) from becoming uneven.