Open AccessResearch on the flow characteristics of opening unit in the rotor spinning unit
Author(s) -
Yuzhen Jin,
Zhu Shi-he,
Jingyu Cui,
Li Jun,
Zuchao Zhu
Publication year - 2017
Publication title -
fibres and textiles in eastern europe
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 39
eISSN - 2300-7354
pISSN - 1230-3666
DOI - 10.5604/01.3001.0010.4622
Subject(s) - spinning , rotor (electric) , process (computing) , flow (mathematics) , vortex , materials science , mechanics , rotational speed , airflow , channel (broadcasting) , engineering , mechanical engineering , composite material , computer science , physics , electrical engineering , operating system
The opening unit is an important device in a rotor spinning unit to comb fibres and remove trash. In this paper, numerical simulation is carried out to study the flow structure in the rotor spinning channel and the trash removal process in the trash removal unit. Firstly the effect of the opening unit on the airflow field in the rotor channel is investigated by singlephase simulation. The result shows that the effective area for fibre conveyance enlarges as the absolute value of negative pressure at the outlet increases, while it decreases as the opening roller speed increases. However, the effect of the negative pressure and the opening roller speed on the length of the vortex in the axial direction is quite small. Secondly the trash separation process in the trash removal unit is simulated using the Discrete Phase Model (DPM). Suitable rotational speeds of particles of different diameters are acquired. These results could provide a valuable reference for parameter selection in the trash-removal process.