The Study Of Tobacco Stem-cut Tobacco Separating Device From Eliminated Tobacco Stem

Tobacco stem separation device is a kind of device can be isolated from waste available material, can achieve saving energy and reducing consumption, increasing economic benefits. Paper with "industrialization in hunan province colleges and universities cultivate project(12CY011) as the backing, to stem wire separation unit as the research object, combining the theory of separation of suspended and inertial separation theory, by using the computational fluid dynamics CFD commercial software FLUENT software to numerical simulation of the device were studied systematically cigarette-rolling machines under different wind power system and variable condition, stem wire wind device separation efficiency, the results of the study have positive sense to cigarette-rolling machines to save material, the main research work and achievements are as follows:(1) the numerical simulation method is adopted to stem wire separation plant model for gas phase and particle phase model is simulated, the separation device of the gas phase flow field and sign and the trajectory of the particles of tobacco stem, plant air velocity in full compliance with infarction sign and the separation of tobacco suspension speed requirements. Infarction sign the vast majority of particles in the infarction sign a separate room for settlement, can arrive only a few of the units of tobacco separation chamber; The tobacco settlement of most particles in tobacco separation chamber.(2) describes the four evaluation index of separation unit, and use of the evaluation index of stem wire separation unit are analyzed, and the results show that stem wire separation device of infarction sign particle capture efficiency to an average of 99.709%, tobacco particle capture efficiency to an average of 70.836%, silk contains stem at a rate of 1.217% to 1.217%.(3) analyzed the stem under variable working condition wire separation plant performance, with the increase of wind speed, terrier sign particle capture efficiency to reduce and cut tobacco particle capture efficiency increase, silk contains infarction rate increases, the best job in the wind speed is 7 m/s to 8 m/s; With the increase of infarction sign of particle size, the trapping efficiency will be increased slightly, with the increase of tobacco particle size, it has slightly reduced efficiency.(4) under the condition of changing stem wire separation plant structure has carried on the comparative analysis to device, tap changes the shape of a great influence on the separation efficiency of the separation device, and the number of suspension chamber will also affect the separation efficiency of the separation device.