A submersible agitator device for circulating drinking water includes a submersible motor including a cylindrical housing, from one end of which there extends a shaft, a hyperboloid agitator mounted on the shaft, a frame with a plurality of supports extending along the housing and connected to the housing, wherein the supports have radially outwardly angled bend portions, which extend over a peripheral edge of the hyperboloid agitator body in order to support the frame on a base, and a flow-guiding element, which is annular in plan view and which is mounted on the bend portions of the supports.

A novel device for frothing milk is disclosed. The frothing device preferably includes a rotatable impeller and a screen disposed about the bottom of the impeller downstream of milk being pushed by the impeller. The frothing device may further include a pitcher and a base upon which the pitcher sits wherein the base includes a heater. The pitcher includes a magnetic drive capable of turning the impeller at very high speeds. The impeller is positioned off-center within the pitcher that preferably includes a tapered interior. The structure of the device and programs that adjust the speed of rotation of the impeller permit the user to create bubbles and further break the bubbles down into a silky smooth microfoam without the conventional use of a steam wand or other such device and without the skills of a professional barista.

A mixer for use in combination with a bucket and a drill includes an annular rim sized and configured for selective attachment to the bucket; a mixing extension component, the distal end thereof including blades for mixing one or more liquids in the bucket; an opening on the annular rim, the opening being sized for passage of the mixing extension component; a connector component configured for attachment to the distal end of the mixing extension component; a rim member of the connector component configured for being secured about the interior opening of the annular rim for stabilizing the mixing extension component; a manual rotating component; an adapter component configured to be secured to the connector component; and wherein a user can selectively and interchangeably operate the mixer using the drill and the manual rotating component.

A novel device for frothing milk and corresponding method are disclosed. The frothing device preferably comprises a rotatable shaft, an impeller rotatable by the shaft, and a screen disposed about the bottom of the impeller downstream of milk being pushed by the impeller. In another embodiment, the frothing device may further comprise a pitcher having a bottom wall, wherein the rotatable shaft extends upward from the bottom wall of the pitcher. This embodiment may further comprise a heater in the base of the pitcher. In yet another embodiment, the frothing device may further comprise a pitcher having a bottom wall, wherein the rotatable shaft extends upward from the bottom wall of the pitcher. This embodiment may further comprise a housing having a heater and a nub extending upwardly from the housing. The nub is configured to engage an opening at the bottom of the shaft for rotating the shaft. The disclosed embodiments advantageously create foam and further break the foam bubbles down into microscopic bubbles resulting in a silky smooth foam-textured milk without the conventional use of a steam wand or other such device.

A stirring tool for a stirrer for stirring a mixture comprises a connecting element for connecting the stirring tool to a stirring drive, drivable about a rotational axis, of the stirrer, a carrier ring, a plurality of stirring spokes disposed between the connecting element and the carrier ring, and at least one stirring boss which projects radially on the carrier ring. Two adjacent stirring spokes are arranged mutually offset in the direction of the rotational axis.

Miniature stirred tank bioreactor and system; the bioreactor configured for single use culturing providing unobstructed culturing volume with sensors, probes and ports using minimally invasive placement in-wall or across the wall methods; the bioreactor further capable of containing scaffolds and features for culturing cells and tissue, including structures providing surfaces for cell growth, and screens for retaining microparticles during media exchange.

A stirring tool for a stirrer for stirring a mixture comprises a connecting element for connecting the stirring tool to a stirring drive, drivable about a rotational axis, of the stirrer, a carrier ring, a plurality of stirring spokes disposed between the connecting element and the carrier ring, and at least one stirring boss which projects radially on the carrier ring. Two adjacent stirring spokes are arranged mutually offset in the direction of the rotational axis.

A stirring tool for a stirrer for stirring a mixture comprises a connecting element for connecting the stirring tool to a stirring drive, drivable about a rotational axis, of the stirrer, a carrier ring, a plurality of stirring spokes disposed between the connecting element and the carrier ring, and at least one stirring boss, which projects radially on the carrier ring, wherein two adjacent stirring spokes are arranged mutually offset in the direction of the rotational axis.

The present application discloses an impeller assembly and a mixing apparatus, and relates to the technical field of solid and liquid mixing devices. The impeller assembly includes an impeller structure and a housing structure. The impeller structure includes a body, and a surface of the body is provided with a plurality of backward-skewed blades. A blade angle of each backward-skewed blade on any flow plane first decreases progressively and then increases progressively from an inlet to an outlet. A first baffle is disposed on a lower portion of the body. The housing structure includes a second baffle. The first baffle is provided with first guide slots, and the second baffle is provided with second guide slots. A fluid enters from the inlet at an upper portion of the body, flows along the surface of the body, and flows out through the outlet at a lower portion of the body and through the first guide slots and the second guide slots. A centerline of each first guide slot is deflected towards a direction opposite to a rotation direction of the impeller structure, and a centerline of each second guide slot is deflected towards the rotation direction of the impeller structure. The present application solves the problems of unstable discharge, large vibration and noise, and insufficient work efficiency.

The present application discloses an impeller assembly and a mixing apparatus, and relates to the technical field of solid and liquid mixing devices. The impeller assembly includes an impeller structure and a housing structure. The impeller structure includes a body, and a surface of the body is provided with a plurality of backward-skewed blades. A blade angle of each backward-skewed blade on any flow plane first decreases progressively and then increases progressively from an inlet to an outlet. A first baffle is disposed on a lower portion of the body. The housing structure includes a second baffle. The first baffle is provided with first guide slots, and the second baffle is provided with second guide slots. A fluid enters from the inlet at an upper portion of the body, flows along the surface of the body, and flows out through the outlet at a lower portion of the body and through the first guide slots and the second guide slots. A centerline of each first guide slot is deflected towards a direction opposite to a rotation direction of the impeller structure, and a centerline of each second guide slot is deflected towards the rotation direction of the impeller structure. The present application solves the problems of unstable discharge, large vibration and noise, and insufficient work efficiency.