A novel particle-size conveying model was established to examine the effects of the dimension relationships of the groove depth and particle size on the solids conveying mechanism of the helically grooved feed section...A novel particle-size conveying model was established to examine the effects of the dimension relationships of the groove depth and particle size on the solids conveying mechanism of the helically grooved feed section. In the model, one or two shear interfaces were proposed based on the dimension relationships of the groove depth and particle size, and the solid-plug embedded in the groove and screw channel were divided into two or three layers by the shear interfaces to consider the solids conveying mechanism of each layer by the boundary condition equation for positive conveying. By the particle-size model, the effects of different dimension relationships on the transformation of solids conveying mechanisms between the friction-drag conveying and the positive conveying were discussed and compared with the on-line measuring experimental data. The results showed that the shear interfaces among the solids existed indeed and the dimension relationships determined the conveying mechanism and the throughput of helically grooved extruders, which was well confirmed by the excellent consistence between the predicted and measured data.展开更多
A series of international Conveying and Handling of Particulate Solids （CHOPS） conferences was initiated in Herzliya, Israel in 1995 and has since proceeded with six successive conferences held in Jerusalem （1997）...A series of international Conveying and Handling of Particulate Solids （CHOPS） conferences was initiated in Herzliya, Israel in 1995 and has since proceeded with six successive conferences held in Jerusalem （1997）, the Dead Sea （2000）, Budapest （2003）, Sorrento （2006）, Brisbane （2009） and Friedrichshafen （2012）. The conference series covers processes involvin particulate solids, for example,展开更多
Earlier work by the authors in which active sound pressure signals and impulsive pressure disturbances were used to measure flow rates in gas solid systems was briefly reviewed. Work in progress with an emerging techn...Earlier work by the authors in which active sound pressure signals and impulsive pressure disturbances were used to measure flow rates in gas solid systems was briefly reviewed. Work in progress with an emerging technology in which Helmholtz resonance is applied to the measurement of volume is outlined.展开更多
基金Funded by the National Natural Science Foundation of China(No.50873014)
文摘A novel particle-size conveying model was established to examine the effects of the dimension relationships of the groove depth and particle size on the solids conveying mechanism of the helically grooved feed section. In the model, one or two shear interfaces were proposed based on the dimension relationships of the groove depth and particle size, and the solid-plug embedded in the groove and screw channel were divided into two or three layers by the shear interfaces to consider the solids conveying mechanism of each layer by the boundary condition equation for positive conveying. By the particle-size model, the effects of different dimension relationships on the transformation of solids conveying mechanisms between the friction-drag conveying and the positive conveying were discussed and compared with the on-line measuring experimental data. The results showed that the shear interfaces among the solids existed indeed and the dimension relationships determined the conveying mechanism and the throughput of helically grooved extruders, which was well confirmed by the excellent consistence between the predicted and measured data.
文摘A series of international Conveying and Handling of Particulate Solids （CHOPS） conferences was initiated in Herzliya, Israel in 1995 and has since proceeded with six successive conferences held in Jerusalem （1997）, the Dead Sea （2000）, Budapest （2003）, Sorrento （2006）, Brisbane （2009） and Friedrichshafen （2012）. The conference series covers processes involvin particulate solids, for example,
文摘Earlier work by the authors in which active sound pressure signals and impulsive pressure disturbances were used to measure flow rates in gas solid systems was briefly reviewed. Work in progress with an emerging technology in which Helmholtz resonance is applied to the measurement of volume is outlined.
