Large volume twin shaft compulsory mixer

DETAILED DESCRIPTION A compulsory mixer having a capacity in excess of 12 cubic yards has a static mixing chamber bottom defined from two horizontally disposed and interfering cylindrical shapes.
A first cylindrical shape formed along a first horizontal axis defines a little over one-half the volume and profile of the bottom of the static mixing chamber.
A second cylindrical shape formed along a second horizontal and parallel axis defines a little over a second one-half of the volume and remaining profile of the bottom of the static mixing chamber.
The cylinders defining the bottom of the mixing chamber overlap or interfere at respective interfering sections interior of the volume of the mixing chamber.
This interference occurs along cylindrical segments extending centrally of the volume of the static mixing chamber.
Two centrally disposed elongate rectilinear discharge gates are each defined from an end in the bottom of the static mixing chamber to abut at the middle of the static mixing chamber.
At the middle of the bottom of the static mixing chamber, a tensioning rod is placed extending normally across the abutted ends of the two rectilinear slots.
Two eccentrically mounted elongate rectilinear gates are mounted for movement into and out of sealing relation to the rectilinear slot centrally of the static mixing chamber.
These gates are mounted centrally of the mixing chamber to a pillow block and spherical bearing arrangement and actuated at the respective static mixer chamber ends by conventional piston drives.
Reducing the gates in length reduces deflection.
Further, the tensioning rod adjusts for chamber deflection.
Finally, the eccentrically mounted elongate rectilinear gates can be rotated in opposite directions to deposit concrete on opposite sides of a concrete off-loading and elevating conveyor.
Discharge of mixed concrete at maximally controlled rates can occur in a balanced fashion to an underlying conveyor for elevation and discharge from the large capacity compulsory mixer