The stirring device, in particular for a fluid-mixing bioreactor, comprises a drive shaft including a rod, an agitating element and a sleeve of tubular shape. The sleeve forms a coupling sleeve receiving the shaft therethrough and is directly rotationally coupled to the rod. The agitating element, which has a hub with an annular side wall delimiting an inner space and an impeller assembly comprising blades, is indirectly rotationally coupled to the rod via the sleeve that is engaged in the inner space. One of an inner surface of the wall and an outer surface of the sleeve is a guiding surface with progressively reduced cross section. Axial movement between the hub and the sleeve is prevented in a locked configuration of a sleeve fastening arrangement. Hub-sleeve contact areas can be axially distributed.

The stirring device, in particular for a fluid-mixing bioreactor, comprises a drive shaft including a rod, an agitating element and a sleeve of tubular shape. The sleeve forms a coupling sleeve receiving the shaft therethrough and is directly rotationally coupled to the rod. The agitating element, which has a hub with an annular side wall delimiting an inner space and an impeller assembly comprising blades, is indirectly rotationally coupled to the rod via the sleeve that is engaged in the inner space. One of an inner surface of the wall and an outer surface of the sleeve is a guiding surface with progressively reduced cross section. Axial movement between the hub and the sleeve is prevented in a locked configuration of a sleeve fastening arrangement. Hub-sleeve contact areas can be axially distributed.

A device for frothing milk and liquid food is disclosed having a frothing rotor and a motor adapted to rotate the frothing rotor, a seat adapted to substantially entirely contain the frothing rotor an inlet for feeding the milk or liquid food into the seat, an air inlet and an outlet of the milk or liquid food from the seat.

The present invention relates to an in-line mixing apparatus and use therein for adding a polymer solution and dewatering an aqueous mineral suspension. Said method comprises statically mixing the aqueous mineral suspension with a poly(ethylene oxide) (co) polymer to form a dough-like material. The viscous mixture material is then dynamically mixed in an in-line reactor 40 to reduce the mixture viscosity and to form microflocs and release water. Said method is particularly useful for the treatment of suspensions of particulate material, especially waste mineral slurries, especially for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

A mixing unit includes a mixing body having mixing elements that are stacked in a stacking direction and that extend in an extending direction. The mixing elements have a plurality of first through holes to form a flow path therein, and are arranged such that part or all of the first through holes in one of the mixing elements communicate with first through holes in the adjacent mixing elements to allow fluid to be passed in the direction in which the mixing element extends

The invention relates to a mixing system, in particular a bioreactor and/or a pallet tank, for mixing a fluid and/or solid, having a container (4), wherein the fluid and/or the solid and a rotatable stirring element (3) for mixing the fluid and/or the solid are arranged in the interior of the container (4). The mixing system furthermore has a mixing device (1) for receiving the container (4) and a drive device (2) for driving the stirring element (3). The drive device (2) comprises a stator (20) of a three-phase machine (10; 11), the stirring element (3) comprises a rotor (30) of the three-phase machine (10; 11), and the rotor (30) has at least one permanent magnet (31; 31′) and/or at least one short circuit rotor.

The present disclosure suggests a food waste treatment apparatus. A food waste treatment apparatus in accordance with an exemplary embodiment of the present disclosure includes: a housing including a food inlet opening at its top surface; an inner chamber where food introduced through the food inlet opening is collected; a stirring unit provided within the inner chamber and configured to stir food waste; an outer chamber positioned outside the inner chamber; and a rotation driving unit configured to rotate the stirring unit and the inner chamber, and the inner chamber and the stirring unit are rotated by the rotation driving unit in opposite directions.

This disclosure features methods of forming chemical compositions. The method includes (1) mixing a plurality of continuous material flows in a mixing tank to form a chemical composition, each continuous material flow including at least one component of the composition; and (2) moving a continuous flow of the chemical composition to a packaging station downstream of the mixing tank. The mixing and moving steps are performed continuously. This disclosure also features systems that can be used to perform such methods.

Mixing device 1, dosing container and mixing hopper for mixing a synthetic starting material with an additive, in particular a granular additive or additive in powder form, comprising a mixing housing 10 with an inlet 14 for allowing the substances into a mixing chamber 12 bounded by the mixing housing and an outlet 16 for discharging the substances from the mixing chamber in mixed form, wherein a rotor body 11 is provided on a rotatable shaft 17 in the mixing chamber and comprises on a side a number of rotor arms 18 extending parallel to the shaft in the direction of an opposite wall of the mixing housing 10, and wherein the opposite wall of the mixing housing is provided with a number of stator arms 19 extending parallel to the shaft in the direction of the rotor body, and wherein a mixing hopper is provided having an infeed side for receiving a flow of the substances for mixing and an outfeed side which is in open communication with the inlet of the mixing housing 10, and wherein a dividing body is provided between the infeed side and outfeed side in order to divide the flow of the substances for mixing into a number of at least substantially equal part-flows.

Mixing device 1, dosing container and mixing hopper for mixing a synthetic starting material with an additive, in particular a granular additive or additive in powder form, comprising a mixing housing 10 with an inlet 14 for allowing the substances into a mixing chamber 12 bounded by the mixing housing and an outlet 16 for discharging the substances from the mixing chamber in mixed form, wherein a rotor body 11 is provided on a rotatable shaft 17 in the mixing chamber and comprises on a side a number of rotor arms 18 extending parallel to the shaft in the direction of an opposite wall of the mixing housing 10, and wherein the opposite wall of the mixing housing is provided with a number of stator arms 19 extending parallel to the shaft in the direction of the rotor body, and wherein a mixing hopper is provided having an infeed side for receiving a flow of the substances for mixing and an outfeed side which is in open communication with the inlet of the mixing housing 10, and wherein a dividing body is provided between the infeed side and outfeed side in order to divide the flow of the substances for mixing into a number of at least substantially equal part-flows.