Device with mixing vessel

摘要

The apparatus comprises a shaft (22) for rotating a stirrer in axial rotation in a stirring tank, and a device for separating a product environment and a rotating environment. The shaft is rotated by a rotating device. The stirring tank defines the product environment while the rotating device defines the rotating environment. The separation device comprises helical transport duct (30) opening into the stirring tank, a heat transfer unit, and a rinsing unit. The transport duct is defined by a first helical groove formed on a separation body surrounding the rotating shaft. The apparatus comprises a shaft (22) for rotating a stirrer in axial rotation in a stirring tank, and a device for separating a product environment and a rotating environment. The shaft is rotated by a rotating device. The stirring tank defines the product environment while the rotating device defines the rotating environment. The separation device comprises helical transport duct (30) opening into the stirring tank, a heat transfer unit, and a rinsing unit. The transport duct is defined by a first helical groove formed on a separation body surrounding the rotating shaft, an interior wall of the rotating shaft, and a second helical groove formed on the rotating shaft. The separator duct comprises a first section and a second section arranged successively along the rotating shaft, where the two sections are formed of two helical grooves of which the directions are reversed or identical. The heat transfer unit comprises an annular cavity arranged in the separation body, an inlet duct for supplying a heat exchange fluid in the annular cavity, and an outlet duct for evacuating the heat exchange fluid from the annular cavity after it is warmed by heat transfer through a wall arranged between the annular cavity and the separation duct. The rinsing unit comprises a conduct for injecting the rinsing fluid in an annular space arranged around the rotating shaft in upstream of the separation duct, a central cavity arranged between the rotating environment and the first section, and a duct opening in an intermediate annular region located between the two sections for injecting or evacuating the rinsing fluid.