Abstract:

The geometric parameters of the transfer channel and the spatial position of the rotor and channel have great influence on the air flow characteristics in the rotor spinning machine and then affect the straightness of the fibers in the transfer zone. The method of numerical simulation is used to study the air flow of the transfer channel and the rotor, and the effects of the transfer channel characteristic number and the spatial position of the rotor and channel on the air flow and fiber straightness are investigated. The simulation results show that from the inlet to the outlet of the transfer channel, the negative pressure increases steadily first, and then it increases dramatically, and this trend becomes more obvious with the increasing characteristic number. The velocity difference increases along with the increasing characteristic number. The negative pressure along the transfer channel diminishes first, and then enhances, while the velocity difference increase with the enlarging of the space angle α. The space angle β has comparatively small effect on the pressure and velocity distribution in the transfer channel; however, it mainly changes the initial contact position of fibers and the rotor.

Key words: transfer channel, rotor spinning, airflow, numerical simulation