A screen-type screw centrifuge including a screw drive shaft, a screw hub, a hollow screw main body and a ring-shaped annular-gap cover. At least one axial access channel is formed radially between a screw main body circumferential wall and the annular-gap cover. Using a tool engagement portion of a tightening means, by which the screw main body is fixed to the screw hub with a first screw main body axial end portion thereof, is axially accessible from a second screw main body axial end portion.

A screen-type screw centrifuge including a screw drive shaft, a screw hub, a hollow screw main body and a ring-shaped annular-gap cover. At least one axial access channel is formed radially between a screw main body circumferential wall and the annular-gap cover. Using a tool engagement portion of a tightening means, by which the screw main body is fixed to the screw hub with a first screw main body axial end portion thereof, is axially accessible from a second screw main body axial end portion.

The present invention relates generally to corn dry-milling, and more specifically, to methods for producing a high protein corn meal from a whole stillage byproduct produced in a corn dry-milling process for making ethanol and a system therefore. In one embodiment, a method for producing a high protein corn meal from a whole stillage byproduct includes, in a corn dry-milling process for making ethanol, separating the whole stillage byproduct into an insoluble solids portion and a thin stillage portion. The thin stillage portion is separated into a protein portion and a water soluble solids portion. Next, the protein portion is dewatered then dried to define a high protein corn meal that includes at least 40 wt % protein on a dry basis.

The present invention relates generally to corn dry-milling, and more specifically, to methods for producing a high protein corn meal from a whole stillage byproduct produced in a corn dry-milling process for making ethanol and a system therefore. In one embodiment, a method for producing a high protein corn meal from a whole stillage byproduct includes, in a corn dry-milling process for making ethanol, separating the whole stillage byproduct into an insoluble solids portion and a thin stillage portion. The thin stillage portion is separated into a protein portion and a water soluble solids portion. Next, the protein portion is dewatered then dried to define a high protein corn meal that includes at least 40 wt % protein on a dry basis.

A feed box for a decanter centrifuge has a housing with a hollow interior, the housing having a top with an inlet therethrough, a bottom, sides, and opposing open ends, wherein the inlet and the open ends are in fluid communication with the hollow interior. A liner shaped complementary to the hollow interior of the housing, has a top, a bottom, sides, opposing ends, an opening through the top of the liner below the inlet, and a channel through the liner between the opposing ends in fluid communication with the inlet.

A feed box for a decanter centrifuge has a housing with a hollow interior, the housing having a top with an inlet therethrough, a bottom, sides, and opposing open ends, wherein the inlet and the open ends are in fluid communication with the hollow interior. A liner shaped complementary to the hollow interior of the housing, has a top, a bottom, sides, opposing ends, an opening through the top of the liner below the inlet, and a channel through the liner between the opposing ends in fluid communication with the inlet.

In a centrifugal scroll screen apparatus there is provided a scroll assembly (20) driven by a scroll assembly drive shaft (25) and being connected to the scroll assembly by an axial adjuster comprising a shaft cam portion (92) and a scroll portion (96) each having a respective camming surface (94) whereby relative rotation of the scroll portion (96) and the shaft portion (92) axially adjusts the proximity of the vanes to a coaxial conical screening surface, and a locking ring (97) selectively operable to rotationally secure the scroll portion (96) and the shaft portion (92).

In a centrifugal scroll screen apparatus there is provided a scroll assembly (20) driven by a scroll assembly drive shaft (25) and being connected to the scroll assembly by an axial adjuster comprising a shaft cam portion (92) and a scroll portion (96) each having a respective camming surface (94) whereby relative rotation of the scroll portion (96) and the shaft portion (92) axially adjusts the proximity of the vanes to a coaxial conical screening surface, and a locking ring (97) selectively operable to rotationally secure the scroll portion (96) and the shaft portion (92).

In a centrifugal screening apparatus wherein a housing (10, 11) mounts a screen assembly (12) and a scroll assembly (20) to be differentially rotated about the machine axis, there is provided an inlet assembly (30) having an inlet body (31) defining an annular inlet space (32) coaxial with and opening in to an open apical end of the screen assembly (12) and a material supply conduit (35) delivering material to be screened to the annular space (32) and being aligned in a tangent to the annular space to deliver material to the screen assembly (12) substantially in the direction of rotation of the screen assembly (12).

In a centrifugal screening apparatus wherein a housing (10, 11) mounts a screen assembly (12) and a scroll assembly (20) to be differentially rotated about the machine axis, there is provided an inlet assembly (30) having an inlet body (31) defining an annular inlet space (32) coaxial with and opening in to an open apical end of the screen assembly (12) and a material supply conduit (35) delivering material to be screened to the annular space (32) and being aligned in a tangent to the annular space to deliver material to the screen assembly (12) substantially in the direction of rotation of the screen assembly (12).