Agitating – Mortar mixer type – With ingredient proportioning
Patent
1997-09-12
2000-09-26
Cooley, Charles E.
Agitating
Mortar mixer type
With ingredient proportioning
366 21, 366 28, 366 35, 366 50, 366 66, 3661572, 3661711, 366302, 366320, B28C 514
Patent
active
061234451
ABSTRACT:
A mixer for dry powder, very fine or granular materials and a liquid, e.g., mortar or cement and water, includes a dynamic input mixing stage, a static output mixing stage and a transition tube connecting the two stages in a manner which isolates the two stages from one another. The input mixing stage includes a hopper for receiving the mortar and a horizontal metering screw having a detachable mixing auger. The auger mixes the dry mortar, while the metering screw moves the mixed mortar through a discharge aperture in the hopper and into the transition tube. The metering screw extends into the transition tube for further displacing the dry mortar into the output mixing stage which includes a mixing tube having a fixed internal baffle assembly and an auger disposed along its length. A source of water is connected to the mixing tube for forming a mortar-water slurry. The auger is detachably connected to the metering screw for rotation therewith and acts as a pumping mechanism for discharging the slurry and preventing water from entering the transition tube. The baffle assembly includes an elongated axial rod removably inserted within the auger in the mixing tube and having a plurality of spaced baffles of alternating alignment disposed along its length for statically mixing the slurry. A pair of pivoting closure plates are disposed adjacent the aperture in the hopper for adjusting or shutting off the flow of mortar from the hopper to the transition tube.
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