Low profile rotors and stators for mixers and emulsifiers
AssigneeCharles Ross & Son Company
InventorJames C. Ross
Life of this patent
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Abstract
A rotor-stator assembly includes a rotor and a stator, each of which has a plurality of teeth wherein the height of the teeth is less than approximately one twentieth the diameter of the rotor-stator. According to a presently preferred embodiment of the invention, the height of the teeth on the rotor-stator is approximately 1/48th the diameter of the rotor-stator. A twelve inch diameter rotor-stator having teeth 1/4" high can be rotated at 3600 rpm with 40 HP when mixing materials with water-like viscosity. The arrangement of the teeth on the rotor-stator is preferably concentric with radial grooves, but angled grooves may also be used. The teeth my have a triangular or square profile and the dimensions of the teeth, other than their height, may vary considerably.
Claims12
A rotor-stator assembly for producing sub-micron droplet size liquid--liquid emulsions, said assembly comprising:
- a) a substantially cylindrical stator having a plurality of substantially circular rows of teeth arranged concentrically on a first surface thereof, said teeth having a height which is approximately between one twentieth and one forty-sixth of the diameter of said substantially cylindrical stator, wherein said plurality of rows of teeth are formed by a plurality of concentric vanes and a plurality of grooves which cross said vanes, and wherein said grooves are arranged at an angle from radius lines of said cylindrical rotor;
- and
- b) a substantially cylindrical rotor having a plurality of substantially circular rows of teeth arranged concentrically on a first surface thereof, said teeth having a height which is approximately between one twentieth and one forty-sixth of the diameter of said substantially cylindrical rotor, wherein said plurality of rows of teeth are formed by a plurality of concentric vanes and a plurality of grooves which cross said vanes, and wherein said grooves are arranged at an angle from radius lines of said cylindrical rotor.
A rotor for use with a substantially cylindrical stator having a plurality of substantially circular rows of teeth and for producing sub-micron droplet size liquid--liquid emulsions, said rotor comprising:
- a substantially cylindrical member having a plurality of substantially circular rows of teeth arranged concentrically on a first surface thereof, wherein said teeth have a height which is approximately between one twentieth and one forty-sixth of the diameter of said substantially cylindrical member, wherein said plurality of rows of teeth are formed by a plurality of concentric vanes and a plurality of grooves which cross said vanes, and wherein said grooves are arranged at an angle from radius lines of said cylindrical stator.
A stator for use with a substantially cylindrical rotor having a plurality of substantially circular rows of teeth and for producing sub-micron droplet size liquid--liquid emulsions, said stator comprising:
- a substantially cylindrical member having a plurality of substantially circular rows of teeth arranged concentrically on a first surface thereof, wherein said teeth have a height which is approximately between one twentieth and one forty-sixth of the diameter of said substantially cylindrical member, wherein said plurality of rows of teeth are formed by a plurality of concentric vanes and a plurality of grooves which cross said vanes, and wherein said grooves are arranged at an angle from radius lines of said cylindrical stator.
Dependencies are inferred from the claim text.