Measurement device for yarn movement in shear flow field in high-speed spinning cup

Abstract

The invention discloses a measurement device for yarn movement in a shear flow field in a high-speed spinning cup. A motor is connected with one end of a rotary shaft through a coupler; the other end of the rotary shaft is connected with the spinning cup through a key; a spinning cup cover is fixed on the wall surface and is positioned at the upper end of the spinning cup; a yarn conveying hole is formed in the center of the spinning cup cover; a yarn conveying wheel is arranged right above the center of the spinning cup cover; a high-speed camera is arranged on one side of the outer part of the spinning cup; a supporting wheel, a yarn storage wheel and a lighting lamp are arranged on the other side of the outer part of the spinning cup; and yarns are stored on the yarn storage wheel, pass through the supporting wheel, the yarn conveying wheel and the yarn conveying hole, and enter the spinning cup. The spinning cup is made of transparent organic glass and can be used for optical measurement; the length of the yarn entering the spinning cup can be accurately controlled according to the scale of the yarn conveying wheel; black and white fibers are distributed at intervals of 2mm to form a sharp color contrast; the movement of the yarn in the high-speed spinning cup is shot by using the high-speed camera; the movement mechanism of the yarn in the shear flow field in the high-speed spinning cup can be researched; and a good experimental device and a testing method are provided for subsequent research.

Description

technical field [0001] The invention relates to a flow field measurement device, in particular to a yarn movement measurement device in a shear flow field in a high-speed rotor. Background technique [0002] The textile industry is a traditional pillar industry and an important livelihood industry in my country. However, at present, my country lacks core technologies and independent intellectual property rights in terms of independent innovation, R&D and localization of high-end spinning equipment. Therefore, it has been included in the national major equipment technology innovation guidelines in 2009. The basic scientific research on the design and manufacture of high-end spinning equipment meets the development strategy needs of the country, locality and industry. High-end spinning production processes such as rotor spinning and air-jet spinning all have the phenomenon of yarn movement in the shear flow field. In the past, numerical research methods were mainly used to stu...

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Problems solved by technology

In the past, numerical research methods were mainly used to study the movement of yarn (fiber) in the shear flow field in the high-speed rotor, and there were few research results directly using experimental observation to obtain the law of yarn movement or verify the numerical value. The main difficulty lies in: high-speed rotor The local shape recognition of a single color yarn is poor, and it is difficult to realize the visual observation of the rotor and obtain a clear dynamic image of the yarn movement. In addition, the length of the yarn entering the flow field is an important parameter that determines its movement. control

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