Vortex spinning is a new spinning method that uses a fixed vortex spinning tube to replace the high-speed rotating spinning rotor.
In a sense, vortex spinning is the true air-jet spinning. The fiber strips are fed by the cotton feeding roller, and are opened into single fibers by the licker-in roller. They are fed into the vortex tube from the cotton conveying pipe at high speed by the action of air flow. The vortex tube consists of a core tube and an outer tube. There are three tangential air inlets on the outer tube, and the lower end is connected to a blower. The fan continuously extracts air from the tube. The outside air enters the vortex tube along the air inlets, creating a vortex-like air flow. When the rotating upward airflow reaches the core tube, it merges with the fibers entering the cotton pipeline, forming a condensed fiber ring along the inner wall of the vortex tube, stably surrounding the axis of the vortex tube, rotating at high speed, and twisting the fibers into yarn. The yarn is continuously drawn out from the yarn guide hole by the draw-out roller and wound into a package.
The main feature of vortex spinning is that it eliminates the need for high-speed rotating spinning components. The use of air-flow twisting eliminates the problems of rotational inertia and bearing load caused by high-speed twisting components (such as the rotor of air-flow spinning), as well as the problem of increased spinning tension due to the balloon formed by spinning (such as ring spinning). Compared with other new spinning yarns, vortex spinning has several advantages:
01 Fast speed and high output
The spinning speed of the vortex spinning machine is 100_200m/min, and the practical speed is generally 100-160m/min. Domestic vortex spinning machines are used to spin 6_12 inch yarn, the spinning speed is 100-140 m/min, and the unit yield is 600-800 (kg/thousand spindles·h), which is equivalent to 4_5 times of ring yarn; for example, spinning 40 mm For acrylic yarn, 10 PF-1 vortex spinning machines (192 heads/machine) are used, with an output of 400 kg/h. It is equivalent to the output of 20 BD-200 open-end spinning machines (4,000 heads), and is equivalent to the output of 40 ring spinning machines with 16,320 spindles. The output of one vortex spinning head is equivalent to the output of 2.08 air-end spinning heads or 8.5 ring spindles.
02 Short process flow and high manufacturing rate
Vortex spinning uses fiber slivers to be directly spun into cheese yarn, so like other new spinning yarns, the two processes of roving and winding can be omitted. Since the end breakage rate of vortex spinning is very low and the waste back loss is small, the production rate is as high as over 99%.
03 Suitable for spinning, suitable for making fleece products
Vortex spinning can be spun The fiber length is 38_60_ long, for pure spinning and blended yarns of cotton fiber and chemical fiber. The yarn structure is relatively bulky, so its dyeability, pulp absorption, and air permeability are relatively good, and the yarn’s pilling resistance and abrasion resistance are also relatively good. The range of yarn count is limited to medium and low count yarns, suitable for making pile products. For example, 38-inch long chemical fiber (acrylic fiber, chlorine fiber, viscose, etc.) can be spun into 6-12 inch count yarn and woven into knitted fleece products such as fleece jackets, fleece pants, scarves, cushions, sofa cloths, furniture cloths, and small tablecloths. .
04 Simple operation and convenient connectors
Vortex spinning uses vortex tubes to form yarn. Since the vortex tubes are stationary and have no high-speed rotating parts, the joints are very convenient and simple. There is no need to clean after the end is broken, which improves the working environment. There are no special requirements for pre-spinning equipment and temperature and humidity. Since vortex spinning has no high-speed rotating parts, there is no high-speed bearing lubrication problem, less wear and tear, low noise, and easy maintenance. Production practice shows that there are also certain limiting factors in the development process of vortex spinning. </p