Abstract: In a rotary evaporator, the rotating speed of the rotating flask is automatically controlled or regulated dependent upon a detected process value, particularly the vibration behavior or the mass moment of inertia of the rotating flask.

Abstract: Method and system for evaporating at least one substance. During at least one dosing phase (TG) a predefined or predefinable quantity of a product (M) which contains at least one substance to be evaporated is imported via a feed system (7, 14, 17, 33, 36) into a revolving vessel (2). The revolving vessel is rotated around an axis of rotation (R) and appropriate process conditions for the evaporation of at least one substance are generated or maintained. The flow (F) of the product (M) is automatically controlled or regulated by the feed system (14, 17) during the dosing phase (TG) in particular as a function of at least one process parameter and/or of at least one characteristic property of the product. The product (M) is imported into the revolving vessel (2) in the course of the dosing phase only during predefined feed periods (t1, t2) that are interrupted by intervening intervals and especially idle intervals (t1, t2).

Abstract: A rotary evaporator including a rotating flask (2) to hold the substances to be evaporated, and a drive (6) to rotate the rotating flask around an axis of rotation (R) that runs through the rotating flask, wherein the rotating flask additionally can be swiveled around a swiveling axis (S) which runs outside of the rotating flask and, relative to the force of gravity (G), runs above the axis of rotation of the rotating flask.

Abstract: A sealing device for sealing a cavity (40) rotatable around a rotational axis (A) includes at least two sealing areas separated from each other by at least one intermediate zone (Z1 to Z3), two sealing faces (20, 21 to 24, 30, 31 to 33, 41, 71 to 74) continuously extending around the rotational axis and slidingly movable over each other upon rotation of the cavity (40), and at least one connection (A1 to A3, B1 to B3) for charging, discharging, or passing fluids into, out of, or through the at least one intermediate zone and which serves as a buffer zone for reducing or compensating the leakage.

Abstract: Method and system for evaporating at least one substance. During at least one dosing phase (TG) a predefined or predefinable quantity of a product (M) which contains, or consists of, at least one substance to be evaporated is imported via a feed system (7, 14, 17, 33, 36) into a revolving vessel (2). The revolving vessel is rotated around an axis of rotation (R) and appropriate process conditions for the evaporation of at least one substance are generated or maintained. The flow (F) of the product (M) is automatically controlled or regulated by the feed system (14, 17) during the dosing phase (TG) in particular as a function of at least one process parameter and/or of at least one characteristic property of the product. The product (M) is imported into the revolving vessel (2) in the course of the dosing phase only during predefined feed periods (t1, t2) that are interrupted by intervening intervals and especially idle intervals (t1, t2).

Abstract: In a rotary evaporator, the rotating speed of the rotating flask is automatically controlled or regulated dependent upon a detected process value, particularly the vibration behavior or the mass moment of inertia of the rotating flask.

Abstract: A rotary evaporator including a rotating flask (2) to hold the substances to be evaporated, and a drive (6) to rotate the rotating flask around an axis of rotation (R) that runs through the rotating flask, wherein the rotating flask additionally can be swiveled around a swiveling axis (S) which runs outside of the rotating flask and, relative to the force of gravity (G), runs above the axis of rotation of the rotating flask.

Abstract: A sealing device for sealing a cavity (40) that can be rotated around a rotational axis (A) and including at least two sealing areas separated from each other by at least one intermediate zone (Z1 to Z3); two sealing faces (20, 21 to 24, 30, 31 to 33, 41, 71 to 74) continuously extending around the rotational axis and slidingly movable over each other upon rotation of the cavity (40), and at least one connection (A1 to A3, B1 to B3) for charging, discharging, or passing fluids into, out of, or through the at least one intermediate zone, respectively.

Abstract: An arrangement for discharging and collecting the distillate of rotary vacuum evaporators includes a rotating flask and a line for conducting the distillate from the rotating flask to a cooler for liquefying the distillate. The liquified distillate flows from the cooler into a collector and from the collector into a storage container. A safety check valve constructed as a pressure control valve is provided between the collector and the storage container. An excess pressure producer for increasing the pressure of the distillate is provided between the collector and the pressure control valve, wherein the pressure control valve and the excess pressure producer are constructed so as to interact in such a way that the pressure control valve opens when a sufficient excess pressure of the distillate has been reached.