High speed rotational dispersion device using short shear path

Details High speed rotational dispersion device using short shear path High speed rotational dispersion device using short shear path

1989-10-11

1991-03-12

Jenkins, Robert W.

Agitating

Having specified feed means

Pump forces material through restriction

366264, 366302, 415157, B01F 506, B01F 512

Patent

active

049990152

ABSTRACT:
A plain, circular, high speed rotor, completely covering, and spaced apart from, the end of a thin walled stationary cylinder, forms a short narrow high shear gap. The cylindrical chamber allows fluid axially approaching the central rotor surface to be accelerated radially, to higher speeds over most of the plain rotor, to pass directly through the short shear gap near the rotor periphery. The higher speed fluid in the rotor boundary layer entering the gap excludes free stream turbulence from the high shear region. By adjustments of the gap clearance, one unit with an inch diameter stationary cylinder can dissolve, grind, prepare submicron dispersions, emulsify, mix or pump fluid mixtures at more than three gallons per minute. The gap clearance limits the size of particles passing through the gap without grinding and the force opposing gap spreading controls the intensity of grinding. After grinding is completed the elastic gap may close to the adjusted gap clearance.

REFERENCES:
patent: 4175873 (1979-11-01), Iwako
patent: 4201486 (1980-05-01), Huebner
patent: 4294549 (1981-10-01), Thompson
patent: 4499562 (1985-02-01), Campolini et al.
patent: 4511256 (1985-04-01), Karg et al.
patent: 4529321 (1985-07-01), Berchoux
patent: 4534654 (1985-08-01), Alt
patent: 4610548 (1986-09-01), Hallet

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