Method and apparatus for continuous processing to perform chemical or physical reactions comprises a tube in which internal axial stirrer blades mounted at the periphery of the tube are driven by a drive system. This generates tangential flow of material at the perimeter. Stationary axial baffles mounted inside the swept path of the stirrer blades convert tangential flow into turbulence and radial mixing.

Disclosed is direct ink write (DIW) print extrusion head for 3D printing of viscous elastomers. The disclosed print extrusion head comprises a mixer assembly, comprising a fluid distribution cap coupled to a carrier, an in-line mixer coupled to the fluid distribution cap. A cooling jacket surrounds the in-line mixer. A nozzle is coupled to the in-line mixer and protrudes below the cooling jacket over a work surface. The position of the nozzle relative to the work surface is changeable. At least one heat source is on the chassis and disposed adjacent to the fluid distribution cap. The at least one heat source comprises a heat guiding element to direct heat to a region onto the work surface below the nozzle.

A hydrator includes a dry module with a vertically oriented tube having a central axis, an interior, an upper inlet aperture, a lower outlet, and an inlet section including a dry inlet. A mixing segment includes a vertically oriented tube having an interior wall, a mixing-segment inlet at an upper end, and a mixing-segment outlet at a lower end. The mixing segment is vertically aligned with and sealingly connected to the outlet of the dry module. A rotating hydrator shaft has a liquid channel and a longitudinal axis aligned with the central axis of the dry module. Dry blades are disposed on and rotate with the hydrator shaft in the mixing segment. A hydrator nozzle is disposed on and rotates with the hydrator shaft and has a plurality of outlets in fluid communication with the liquid channel and open to the mixing segment for discharging liquid from the liquid channel.

An impeller includes a hub and a plurality of blades. Each blade extends out from the hub. The impeller has an original diameter defined by respective tips of the plurality of blades. Each blade includes a central axis, a leading edge, a trailing edge, an original profile, and a plurality of trim profiles. The original profile has an outside portion and a trailing portion. The outside portion has an angle within a range of about 40 to about 90 from the central axis and the trailing portion having an angle within a range of about 10 to about 50 from the central axis. A first selected trim profile of the plurality of trim profiles extends along a first line parallel to the outside portion and a second line parallel to the trailing portion.

A blade assembly for a micro puree machine including a central support hub, a cutting blade, a mixing blade, a central opening, an angled ledge and an undercut. The cutting blade extends outward from a circumferential surface of the central support hub and defines a curved leading edge. The central opening is configured to receive a power shaft therein. The angled ledge is located at an upper end of the central support hub and extends about at least a portion of an outer perimeter of the central support hub. The undercut is located on the outer perimeter of the central support hub and is positioned closer to a lower end of the central support hub than the angled ledge. The undercut includes an engagement surface that extends outwards from a central axis of the central support hub and is configured to receive and retain a clip mechanism.

A blade assembly for a micro puree machine including a central support hub, a cutting blade, a mixing blade, a central opening, an angled ledge and an undercut. The cutting blade extends outward from a circumferential surface of the central support hub and defines a curved leading edge. The central opening is configured to receive a power shaft therein. The angled ledge is located at an upper end of the central support hub and extends about at least a portion of an outer perimeter of the central support hub. The undercut is located on the outer perimeter of the central support hub and is positioned closer to a lower end of the central support hub than the angled ledge. The undercut includes an engagement surface that extends outwards from a central axis of the central support hub and is configured to receive and retain a clip mechanism.

A method in which a stream of dry cementitious powder from a dry powder feeder passes through a dry cementitious powder inlet conduit to feed a first feed section of a fiber-slurry mixer. An aqueous medium stream passes through at least one aqueous medium stream conduit to feed a first mixing section the fiber-slurry mixer. A stream of reinforcing fibers passes from a fiber feeder through a reinforcing fibers stream conduit to feed a second mixing section of the fiber-slurry mixer. The stream of dry cementitious powder, aqueous medium stream, and stream of reinforcing fibers combine in the fiber-slurry mixer to make a stream of fiber-cement mixture which discharges through a discharge conduit at a downstream end of the mixer.

A chemical mixer tool for use in a storage drum is described. The chemical mixer tool typically comprises a mixer housing assembly in which one end of a mixer shaft is secured, the distal end of the mixer shaft having at least one collapsible impeller assembly removably attached thereon. The chemical mixer tool is configured to be removably secured to the top portion of the storage drum, with the distal end of the mixing shaft extending into the interior of the storage drum.

Provided herein are solids removal systems for dehydrator systems comprising a large rotating paddle, a small rotating paddle, and a drive shaft. The dehydrator system also includes a core dehydrator and a mixing unit. The core dehydrator comprises a plurality of small deflector plaques in fluidic communication with a plurality of large deflector plaques. The mixing unit includes a rapid mixing manifold in fluidic communication with a plurality of vertical flocculators and the core dehydrator. The large rotating paddle and the small rotating paddle of the solids removal system are connected to the drive shaft and configured to remove solids from the core dehydrator.

A contra-rotating multi-layer propeller unit for multi-phase flow according to an exemplary embodiment of the present disclosure includes: a shaft part; a front propeller and a rear propeller connected to the shaft part; an air collection part including a predetermined space therein and the shaft part positioned in the internal space; and an air supply pipe configured to supply air into the air collection part, and a rear propeller blade includes a two-phase blade connected to a rear propeller hub, a layer structure of which an inner surface is connected to an end portion of the two-phase blade, and a single-phase blade positioned at a location corresponding to the two-phase blade on an outer surface of the layer structure.