Air suction assisted multiple impurity removing and carding device of rotor spinning machine and spinning machine

Abstract

The invention provides an air suction assisted multiple impurity removing and carding device of a rotor spinning machine and the spinning machine, and relates to the technical field of spinning equipment. The device comprises an air supplementing channel and a carding cavity impurity removing area which are arranged at the lower portion of a carding cavity correspondingly; an impurity stripping channel inclined downwards is formed in the lower portion of a carding roller through an impurity stripping face; the impurity stripping channel comprises an effective fiber area, a rolling back suction area and a free impurity falling area; impurities in the rolling back suction area are discharged through an impurity suction opening in the impurity stripping face; a plurality of air suction holes are formed in the surface of the carding roller in an array mode and connected with an air extractor; and when cotton slivers are carded through the carding roller, negative pressure is formed on the surface of the carding roller through air exhaust of the air suction holes so as to generate auxiliary adsorption force and suck away impurities on the inner sides of the cotton slivers. Free impurity falling and precise impurity suction are organically combined, meanwhile, the auxiliary adsorption force is generated on the carding roller through the air suction holes, and the impurities on the inner side are sucked away, so that the device has the characteristics of being high in impurity removing efficiency, wide in raw material adaptability, good in yarn forming quality and low in energy consumption.

Description

technical field [0001] The invention relates to the technical field of spinning equipment, in particular to an air-suction-assisted multi-removal and carding device for a rotor spinning machine and a spinning machine. Background technique [0002] The rotor spinning machine has become the spinning form with the most mature technology, the widest application range and the largest economic and social effects in the new spinning. The rotor spinning machine is mainly composed of rotor cup, false twist disc, yarn guide tube, yarn guide roller, fiber conveying channel, cotton feeding roller, carding roller, miscellaneous discharge device and other components. It utilizes the centrifugal force when the rotor rotates at high speed , so that the fibers transferred from the carding cavity to the rotor are condensed to form whiskers (fiber rings), which are then twisted to form yarns. The working process of the rotor spinning machine can be summarized as follows: the cotton sliver ent...

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Problems solved by technology

However, this method has the following disadvantages: On the one hand, since a relatively high gettering negative pressure is required to strip the impurities along the horizontal direction, small fluctuations in the gettering negative pressure will lead to changes in the number of impurities removed, which in turn will lead to fine details of yarn formation. Large variation; on the other hand, there are disadvantages of high energy consumption of equipment and easy blockage of gettering channels

This method has a longer fiber transfer channel to the rotor, so that the fibers are fully straightened, the yarn formation consistency is better, and the energy consumption is low, but there are the following defects: in the process of impurity separation, the short fibers and other light fibers Impurities are not far away during separation and are closer to the fiber conveying area. Under the action of negative pressure airflow in fiber conveying, they are easy to accumulate in the peeling area and then suck back into the carding chamber, resulting in rollback and backsuction

The higher the impurity content, the more serious the phenomenon of turning and sucking back, which will lead to an increase in yarn breakage rate and a decrease in quality, making this mode less adaptable to recycled raw materials with more short-pile impurities

[0006] To sum up, the existing method of carding and stripping impurities in rotor spinning machines cannot improve the efficiency of trash removal, the adaptability of raw materials, the consistency of yarn quality, In terms of low energy consumption, it is comprehensive. In view of the above-mentioned difficulties in the existing spinning machine market, how to provide a spinning machine that can not only increase the efficiency of waste removal and the adaptability of raw materials, but also ensure good yarn quality consistency and reduce energy consumption. The lower trash removal and carding scheme is a technical problem that needs to be solved urgently

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