Abstract: 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.

Abstract: A radially conveying stirring device with at least one stirring element hub configured to rotate about a rotational axis, with at least one stirring blade and with at least one carrier arm connecting the stirring blade to the stirring element hub, wherein there is at least one half-line which starts from the rotational axis, goes through a center of mass of a connecting surface area of the carrier arm to the stirring element hub and is free from intersection points with the stirring blade, and wherein the stirring blade features at least one beveling dividing the stirring blade into at least two stirring blade sections, wherein the carrier arm is embodied at least substantially L-shaped, wherein the beveling is arranged at least substantially in parallel to the rotational axis.

Abstract: A radially conveying stirring device with at least one stirring element hub configured to rotate about a rotational axis, with at least one stirring blade and with at least one carrier arm connecting the stirring blade to the stirring element hub, wherein there is at least one half-line which starts from the rotational axis, goes through a center of mass of a connecting surface area of the carrier arm to the stirring element hub and is free from intersection points with the stirring blade, and wherein the stirring blade features at least one beveling dividing the stirring blade into at least two stirring blade sections, wherein the carrier arm is embodied at least substantially L-shaped, wherein the beveling is arranged at least substantially in parallel to the rotational axis.

Abstract: A system for dispersing finely dispersed solids into high-viscosity products includes, in a container, a coaxial stirring system having stirring elements on two independently drivable, coaxially arranged shafts. A positive-displacement, close-wall-clearance stirring element on the one shaft and a plurality of stirring elements on a central shaft are arranged in such a manner that, in an upper mixing region of the container, a combination of the positive-displacement, close-wall-clearance stirring element and stirring elements for forming an ideally mixed zone is provided, and in a mixing region downstream of the upper mixing region of the container, stirring elements for developing a plug-flow zone are provided. A positive-displacement pump is provided in a region downstream of the plug flow zone as a discharge zone.

Abstract: The invention relates to a stirring arrangement having a rotating stirring body (2) for stirring fluids. The stirring body (2) has stirring blades (4) attached on a stirring body hub (3). The stirring body further includes a gas supply device (5) supplying a gas, such as air, for dispersing with the stirring body (2). The gas supply device (5) includes a distribution bushing (6) which rotates with the hub (3) of the stirring body (2) and has an interior for receiving the gas. The distribution bushing (6) and the interior thereof are in fluid communication with co-rotating outlet lines (7). Outlet openings of the outlet lines (7) are disposed in the immediate vicinity of the stirring blades (4) and within the volume swept by the stirring body (2) or in the immediate outflow zones, and discharge the gas at respective desired locations in the corresponding desired flow direction.

Abstract: The invention relates to a stirring arrangement having a rotating stirring body (2) for stirring fluids. The stirring body (2) has stirring blades (4) attached on a stirring body hub (3). The stirring body further includes a gas supply device (5) supplying a gas, such as air, for dispersing with the stirring body (2). The gas supply device (5) includes a distribution bushing (6) which rotates with the hub (3) of the stirring body (2) and has an interior for receiving the gas. The distribution bushing (6) and the interior thereof are in fluid communication with co-rotating outlet lines (7). Outlet openings of the outlet lines (7) are disposed in the immediate vicinity of the stirring blades (4) and within the volume swept by the stirring body (2) or in the immediate outflow zones, and discharge the gas at respective desired locations in the corresponding desired flow direction.

Abstract: The invention relates to a stirring assembly comprising a stirring element (2) for stirring a liquid and a gassing device (3 or 3?) which supplies gas, such as air, below the stirring element (2) and at the side(s) of the stirring element (2), with the gas to be dispersed by means of the stirring element (2). The gassing device (3; 3?) is designed in such a manner that until a critical gas quantity value determining the flooding point is reached, the gassing device (3; 3?) supplies the quantity of gas to the stirring element (2) from below and when the flooding point is exceeded, the gassing device (3; 3?) simultaneously supplies the gas exceeding the flooding point at the side(s) of the stirring element (2). The aim of the invention is to prevent the stirring element (2) from being flooded and to improve the dispersing effect of the liquid and gas.

Abstract: An agitator includes a hub for attachment to an agitator shaft, and at least two agitator blades which are connected to the hub and extend in a radial direction for rotation about an axis, with the agitator blade angled in relation to the axis. Each agitator blade has a free end, with a fin being provided in an area of the free end of the agitator blade and extending in a substantial parallel relationship to a direction of the axis away from the agitator shaft.

Abstract: An agitator includes a hub for attachment to an agitator shaft, and at least two agitator blades which are connected to the hub and extend in a radial direction for rotation about an axis, with the agitator blade angled in relation to the axis. Each agitator blade has a free end, with a fin being provided in an area of the free end of the agitator blade and extending in a substantial parallel relationship to a direction of the axis away from the agitator shaft.

Abstract: An agitator, in particular for dispersing gases in liquids, includes a plurality of blades, with each blade being constructed to have a blade portion bent forwards in a rotation direction. The blade has a trailing end region, which defines a blade portion bent forwards in a rotation direction, and a leading end region, which is bent inwards at an angle in a direction toward the blade portion.

Abstract: A treatment plant in particular for a liquid medium of average to high viscosity, for example for production of pharmaceutical and cosmetic products includes a container in which an agitator, built-in structures, heat exchange elements, baffles or the like may be arranged. To reduce medium loss and to effectively clean such a treatment plant, any region or component of the treatment plant that comes into contact with the fluid medium is provided with a medium-repellent coating.

Abstract: An agitator, in particular for dispersing gases in liquids, includes a plurality of blades, with each blade being constructed to have a blade portion bent forwards in a rotation direction.

Abstract: An agitator for agitating liquids in an agitator vessel for suspending solids and dispersing gas in a liquid, in particular in an absorber of a flue gas desulfurizing plant, includes an agitator vessel, an agitator shaft extending into the agitator vessel, and an agitating propeller mounted to the agitator shaft within the agitator vessel. The agitator shaft is hollow to define an interior space for conducting gas into the agitator vessel and injecting gas on the pressure side of the agitating propeller into the liquid.