A stirrer apparatus, in particular for a usage in crystallizers, comprises a stirrer shaft, with at least one first blade element, which is held at the stirrer shaft and is configured for a mixing of at least one material that is to be mixed, and comprises at least one second blade element, which is held at the stirrer shaft and is configured to keep at least a proximity around the stirrer shaft free from material deposit and/or encrustations,

wherein the stirrer apparatus further comprises at least one stirring blade with a front side and a rear side, which comprises the first blade element and the second blade element.

An impeller, for example, a Rushton impeller for a bioreactor system is disclosed. The impeller includes a hub, optionally including a slot, a plurality of blades, and one or more turbulators. The plurality of blades is disposed along a circumferential direction of the hub and spaced apart from each other. Each of the plurality of blades is coupled to at least a portion of a circumference and/or a top surface of the hub. Each blade of the plurality of blades includes a pressure face and a suction face. The one or more turbulators is disposed on at least a portion of the suction face, the pressure face, or both, of a blade of the plurality of blades.

A dynamic mixer for mixing a multi-component material includes a mixing rotor capable of being rotated about an axis of rotation, the mixing rotor having a coupling socket configured at an end thereof. The coupling socket has a reception space configured to receive at least a part of a polygonal shaped coupling plug of a drive shaft to transfer torque from the drive shaft to the mixing rotor. The reception space has an inner length in the direction of the axis of rotation and has an inner surface extending over the inner length and surrounding the axis of rotation.

A dynamic mixer for mixing a multi-component material includes a mixing rotor capable of being rotated about an axis of rotation, the mixing rotor having a coupling socket configured at an end thereof. The coupling socket has a reception space configured to receive at least a part of a polygonal shaped coupling plug of a drive shaft to transfer torque from the drive shaft to the mixing rotor. The reception space has an inner length in the direction of the axis of rotation and has an inner surface extending over the inner length and surrounding the axis of rotation.

A method in which a medium viscous to highly viscous fluid and/or a medium viscous to highly viscous suspension are/is mixed by means of an agitator device that is driven by a drive shaft, wherein

the fluid and/or the suspension are/is brought into a multi-dimensional flow by means of a close-clearance stirring blade (14) of the agitator device, and a flow resistance is minimized along a shaft direction in a shaft proximity.

A mixing vessel for a food processor operated by an electric motor, which mixing vessel has a mixing mechanism which can be connected to a rotary drive of the food processor by means of a coupling driver, wherein the mixing vessel has a cleaning device for cleaning an inner wall of the mixing vessel, in particular a floor of the vessel. The cleaning device is arranged on the mixing vessel, in particular on a vessel wall and/or the mixing mechanism, and has at least one cleaning element which is designed such that, upon actuation of the cleaning device, it sweeps over the inner wall and/or over sub-regions of the mixing mechanism and, by interacting mechanically with any deposits which may be located on the inner wall and/or the mixing mechanism, helps to remove the same. The mixing vessel can have a cleaning device which has an ultrasonic transmitter, which is arranged in a fixed position in a wall of the mixing vessel or which is arranged, in particular in a removable manner, in the interior of the mixing vessel.

A filling apparatus comprises a filling material reservoir and a filling chamber that is connected to the filling material reservoir with a filling opening configured to dispense filling material into cavities in the rotary press. A first rotatably driven stirrer blade wheel with one or more stirrer blades and a second rotatably driven stirrer blade wheel with one or more stirrer blades are arranged in the filling chamber. The first rotatably driven stirrer blade wheel has at least one of a different geometry, a different direction of rotation, or a different rotary speed, than the second rotatably driven stirrer blade wheel.

A fluid mixing system includes a container, such as a flexible bag, bounding a compartment. A flexible drive line is disposed within the compartment, the drive line having a first end rotatably connected to a first end of the container and an opposing second end rotatably connected to a second end of the container. At least one mixing element, such as an impeller, is coupled with the flexible drive line. Rotation of the drive line facilitates rotation of the impeller within the container.

The mixing tool is for opening a container and for mixing a product contained in the container. The tool includes a mixing device which is shaped to mix the product contained in the container. A shank extends along a length from the mixing device to an end face. A channel is formed into the end face for receiving an edge of a lid of the container to allow the tool to be used to pry the lid off of the container.

Process for densification of a poly(arylene ether ketone) (PAEK) powder or of a mixture of poly(arylene ether ketone) (PAEK) powders, the process being mixing the powder or the mixture of powders, in a mixer equipped with a rotary stirrer including at least one blade, for a period of between 30 minutes and 120 minutes, preferably of between 30 and 60 minutes, at a blade-tip speed of between 30 m/s and 70 m/s, preferably of between 40 and 50 m/s.