Open AccessHudrodynamic vibration of knife refiner
Author(s) -
С. Н. Вихарев
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1515/4/042057
Subject(s) - vibration , mill , mechanical engineering , engineering , flow (mathematics) , auger , mechanics , acoustics , physics
The aim of this article is to study the hydrodynamic vibration of knife refiners. Such vibration occurs due to hydrodynamic processes during the operation of the mill. A mathematical model is proposed that describes hydrodynamic vibration. The hydrodynamic force that excites the mill oscillations consists of the following main components: impact of the semi-finished product on the auger blades and headset knives; forward and reverse flow interactions; pressure on the knives of the headset. These forces depend on the design and operation of the mill. The error between theoretical and experimental studies does not exceed 20%. Vibration processes of hydrodynamic origin are mainly determined by the impact of the semi-finished product flow on the auger blades at the entrance to the mill. The proposed research technique can be used in other machines, for example, in centrifugal pumps.