In one embodiment, the present disclosure includes a device for manufacturing a frozen edible product, including a cylindrical tank and a dasher disposed within the cylindrical tank and configured to rotate in a direction of rotation on an axis of rotation. A non-circular cylindrical core extends within the core along the axis of rotation. The dasher includes a generally cylindrical frame concentric with the tank and having a plurality of gaps, deflectors extending radially inward relative to the axis of rotation and circumferentially in the direction of rotation from the gaps, and blades extending radially outward from the dasher.

The present invention provides a stirring device and gear train, the stirring device comprises at least one gear; at least one stirring tube; and at least one connecting portion connecting the gear and the stirring tube. Wherein the gear, the connecting portion, and the stirring portion are hollow, and the gear rotates the stirring tube via the connecting portion. Stirring is performed by utilizing the gear and the stirring tube in the stirring device of the present invention. Not only does the biggest flux be achieved per area, but the problem about cross contamination can also be reduced. In addition, in the gear train, the collimation of the stirring device can be increased by a specific hollow gear and a lengthened hollow bearing train forth in the gear train.

An apparatus for promoting a mass transfer reaction having a flow distributor and a drive unit. The flow distributor has a top end surface, a bottom end surface and a peripheral surface that are axisymmetric with respect to a rotation axis. The flow distributor is configured to submerge in a fluid medium and to generate a flow of the fluid medium through at least one of the top end surface and the bottom end surface and through the peripheral surface by rotating around the rotation axis. The drive unit is configured to move the flow distributor perpendicular to the rotation axis.

A mixing and dispersing apparatus includes a tank body, a stirring part, a dispersing part, and a driving part. The tank body has an accommodating cavity configured to accommodate materials. The stirring part is disposed in the accommodating cavity and configured to mix the materials in the accommodating cavity. The dispersing part is disposed in the accommodating cavity and includes a first cylinder and a second cylinder. The first cylinder has a first cavity in communication with the accommodating cavity, the second cylinder is located in the first cavity, and the second cylinder has a second cavity in communication with the accommodating cavity. The driving part is connected to the stirring part and the dispersing part. The materials mixed in the accommodating cavity flow into the second cavity and flow out after being dispersed in the dispersing part.

A mixing and dispersing apparatus includes a tank body, a stirring part, a dispersing part, and a driving part. The tank body has an accommodating cavity configured to accommodate materials. The stirring part is disposed in the accommodating cavity and configured to mix the materials in the accommodating cavity. The dispersing part is disposed in the accommodating cavity and includes a first cylinder and a second cylinder. The first cylinder has a first cavity in communication with the accommodating cavity, the second cylinder is located in the first cavity, and the second cylinder has a second cavity in communication with the accommodating cavity. The driving part is connected to the stirring part and the dispersing part. The materials mixed in the accommodating cavity flow into the second cavity and flow out after being dispersed in the dispersing part.

Mixing systems that include a mixer housing and a plurality of roller assemblies for mixing and processing materials is disclosed. Each roller assembly includes a roller that extends between sidewalls in the mixer housing and rotates to mix an additive into the material and to carry agglomerated solids toward a discharge of the mixing system. Each of the rollers may have a protrusion geometry formed in the outer contact surface, where each protrusion geometry is complementary to an adjacent roller.