Method of mixing viscous fluids

• US 6,431,741 B2
• Filed: 03/28/2001
• Issued: 08/13/2002
• Est. Priority Date: 12/05/1995
• Status: Expired due to Term

• Current Assignee: Homax Products Incorporated (Nouryon BV)
• Original Assignee: Site-B Company (Nouryon BV)
• Inventors: Martin, Thomas Arnold, King, David Marshall, King, Ronnald Brian
• Primary Examiner(s): Cooley, Charles E.
• Application Number:
  US09/821,538
• Publication Number:
  US 20010046180A1
• Time in Patent Office: 503 Days
• Field of Search: 366/129, 366/130, 366/262, 366/263, 366/265, 366/270, 366/315-317, 366/342, 366/343, 366/348, 366/605, 416/178, 416/184, 416/187
• US Class Current: 366/129
• CPC Class Codes: B01F 2025/9121 from the center to the circumference, i.e. centrifugal flow
• CPC Class Codes: B01F 2101/30 Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel
• CPC Class Codes: B01F 23/47 involving high-viscosity liquids, e.g. asphalt
• CPC Class Codes: B01F 27/0725 on the free end of the rotating axis
• CPC Class Codes: B01F 27/111 Centrifugal stirrers, i.e. stirrers with radial outlets; Stirrers of the turbine type, e.g. with means to guide the flow
• CPC Class Codes: B01F 27/13 Openwork frame or cage stirrers not provided for in other groups of this subclass
• CPC Class Codes: B01F 27/81 the stirrers having central axial inflow and substantially radial outflow
• CPC Class Codes: B01F 27/96 with openwork frames or cages
• CPC Class Codes: B01F 33/5011 portable during use, e.g. hand-held
• CPC Class Codes: B01F 35/3204 Motor driven, i.e. by means of an electric or IC motor
• CPC Class Codes: Y10S 366/605 Paint mixer

Abstract

A method of mixing viscous fluids is disclosed. The method comprises rotating a mixing apparatus (20) in a container (42) of fluid (44). The mixing apparatus comprises a cage (21) located at the end of the shaft (22). The cage (21) comprises a central circular disc (24) with an outer edge (43) and top (38) and bottom (40) sides. A number of vanes (26) extending from each side of the disc (24), the vanes (26) spacedly located near the outer edge of the plate. The free ends of the vanes (26) are connected by a hoop (38, 40) to maintain their spaced relationship.

Claims

1. A method of mixing fluid comprising:

isolating a fluid to be mixed in a container,

providing a mixing structure comprising a shaft, a support mounted to said shaft for rotation therewith, said shaft extending along an axis, a number of vanes mounted for rotation with said support and extending outwardly from said support generally parallel to said axis, said vanes having a length and a width, said length greater than said width, said vanes having an inner edge and an outer edge, said vanes having a top end and a bottom end, said top ends of said vanes arranged in a generally circular configuration and said bottom ends of said vanes arranged in a generally circular configuration, said vanes generally defining at least a portion of an interior area of said mixing device, said vanes spaced apart from one another and defining openings there between, said openings defining flow paths from said interior area to an area exterior to said mixing structure, which openings and flow paths are generally radially aligned with said axis;

positioning said structure in said container containing fluid to be nixed; and

rotating said mixing structures within said fluid within said container, drawing said fluid into said interior area, expelling said fluid radially outwardly at a high velocity through said radially aligned openings, dispersing solidified materials in said fluid moving at high radial velocity by impacting said solidified materials upon said inner edges of said vanes and trapping undispersed materials within said structure by lodging them between said vanes.

2. The method in accordance with claim 1 including the step of generally aligning said inner and outer edges of said vanes in a radial direction.

3. The method in accordance with claim 1 including the step of providing said vanes in a width between said inner and outer edges of about 0.3 times a distance from said axis to said outer edge of said support.

4. The method in accordance with claim 1 including the step of providing said vanes about 0.25 inches apart from one another.

5. The method in accordance with claim 1 including the step of providing vanes which are curved between said inner and outer edges.

6. The method in accordance with claim 1 including the step of providing said vanes in a number of between 4 and 12 vanes per inch diameter of said support when said support has an outer edge which is generally circular in shape.

7. The method in accordance with claim 1 wherein said inner edge of each vane defines a leading surface which is generally oriented perpendicular to a radial direction from said axis.

8. A method of mixing fluid comprising:

isolating a fluid to be mixed in a container;

providing a mixing structure comprising a shaft, a support having an outer edge and mounted to said shaft for rotation therewith, said shaft extending along an axis, said outer edge of said support located radially outward from said axis, a number of vanes mounted for rotation with said support and extending outwardly from said support generally parallel to said axis, said vanes having a top end and a bottom end and a length and a width, said length greater than said width, said top ends of said vanes and said bottom ends of said vanes arranged in a generally circular configuration, said vanes having an inner edge and an outer edge, said vanes generally defining at least a portion of an interior area of said mixing structure, adjacent vanes spaced apart from one another in a non-overlapping configuration and defining an opening there between, said opening defining a flow path from said interior area to an area exterior to said mixing structure;

positioning said structure in said container containing fluid to be mixed; and

rotating said mixing structure within said fluid within said container, drawing said fluid into said interior area, expelling said fluid radially outwardly at a high velocity through said openings, dispersing solidified materials in said fluid moving at high radial velocity by impacting said solidified materials upon said inner edges of said vanes and trapping undispersed materials within said device.

9. The method in accordance with claim 8 including the step of generally aligning said inner and outer edges of said vanes in a radial direction.

10. The method in accordance with claim 8 including the step of providing said vanes in a width between said inner and outer edges of about 0.3 times a distance from said axis to said outer edge of said support.

11. The method in accordance with claim 8 including the step of providing said vanes about 0.25 inches apart front one another.

12. The method in accordance with claim 8 including the step of providing vanes which are curved between said inner and outer edges.

13. The method in accordance with claim 8 including the step of providing said vanes in a number of between 4 and 12 vanes per inch diameter of said support when said support has an outer edge which is generally circular in shape.

14. The method in accordance with claim 8 wherein said inner edge of each vane defines a leading surface which is generally oriented perpendicular to a radial direction from said axis.