Self-cleaning mixer for cement slurry
AssigneeHaltec Corporation
InventorHarold V. Williams
Life of this patent
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Abstract
A self-cleaning mixer includes a cylindrical housing and a feedscrew extending longitudinally through the housing for mixing water and cement and conveying the slurry through the housing. A chute at the infeed end of the housing receives a batch of material and directs the material into the housing. The feedscrew turns on a hollow shaft including a plurality of outwardly directed nozzles along a portion of the length of the shaft. The housing includes a plurality of inwardly directed nozzles fed from a pair of manifolds. During a cleaning cycle, one of the manifolds is shut off, thereby increasing the water pressure in the other manifold and increasing the force of the spray to enhance cleaning. The housing is slightly inclined to provide gravity feed of slurry in addition to the feedscrew.
Claims14
A self-cleaning mixer for cement slurry, said mixer comprising:
- a cylindrical housing having an infeed end and an outfeed end spaced along a first axis;
- a feedscrew within said housing for moving material from said infeed end to said outfeed end, said feedscrew including a hollow shaft;
- a first set of nozzles directed inwardly from said housing to said feedscrew;
- and
- a second set of nozzles directed outwardly from said hollow shaft to said housing.
Dependencies are inferred from the claim text.