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Municipal Mixing with Reciprocating Motion Disk

a technology of reciprocating motion and mixing disk, which is applied in the directions of mixing, transportation and packaging, and biological sludge treatment. it can solve the problems of too low fluid velocity through open area for effective mixing, and achieve the effect of high flow rate and high velocity flow

Inactive Publication Date: 2017-09-07
OVIVO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a way to improve the mixing of liquids and slurries using a reciprocating motion. The invention optimizes the geometry of a mixing disk to increase mixing performance and efficiency. The mixing disk has an open area that allows for a high velocity flow during travel. The design ensures that the center fluid velocity and flow rate are maximized for effective mixing. The invention is particularly useful in wastewater treatment and slurry mixing, such as in digesters.

Problems solved by technology

If the open area is too large relative to the closed area (also considering stroke length and frequency), fluid velocity through open area can be too low for effective mixing.

Method used

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  • Municipal Mixing with Reciprocating Motion Disk
  • Municipal Mixing with Reciprocating Motion Disk
  • Municipal Mixing with Reciprocating Motion Disk

Examples

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Embodiment Construction

[0019]The drawings illustrate several different general configurations of reciprocating mixer disk to which the principles of the invention can be applied. FIGS. 1A and 1B show one pattern in the form of a mixing disk 10 comprised of an annular ring 12 of closed area that is shown flat, planar but which could be conical if desired, as in some mixer disks of the prior art. The flat ring 12 has outer and inner radii, Ro and Ri respectively, defining a width, Wdisk=RoRi,closed area 14 (references to closed area herein include only the ring 12). In the center is an open area 16. If the solid ring 12 is sloped, in a conical shape, it is the projected area that is important to the invention, that is, the area that would be seen as the closed area 12 in plan view, such as seen in FIG. 1B.

[0020]The mixing disk has a hub 18 to which a reciprocating mixer shaft is attached concentrically, secured into either the hub side seen in FIG. 1A or the opposite side. A series of spokes or struts 20, e...

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Abstract

A reciprocating motion disk for mixing wastewater in a tank of a treatment plan is optimized for geometry, along with cycling speed and stroke length, to cause effective mixing velocity throughout the tank.

Description

BACKGROUND OF THE INVENTION[0001]This application claims benefit of provisional application No. 62 / 304,042, filed Mar. 4, 2016.[0002]This invention is concerned with efficient mixing of liquids and slurries using a reciprocating motion to oscillate a mixing disk. In particular the invention is directed to increasing mixing performance and efficiency with optimized geometry in a mixing disk in a reciprocating mixer. An important application of the invention is in wastewater treatment, in the mixing of wastewater slurries, especially in digesters, such as anaerobic digesters.[0003]Linear motion mixers, i.e. reciprocating motion mixers, are described in U.S. Pat. Nos. 7,685,896, 7,399,112, 7,364,351, 7,278,781, 7,029,166, 6,830,369, 6,007,237, 5,100,242 and 5,052,813, as well as U.S. Pub. No. 2015 / 182927. These mixers, at least in the context of the current invention, typically are used in very large vessels, such as, for example, a mixing disk of six feet operating in a vessel about 5...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C02F3/28B01F11/00
CPCC02F3/28B01F11/0082B01F2215/0454B01F2215/0431B01F2215/0481B01F2215/0052C02F11/04B01F31/441B01F2101/305
Inventor GOLDHARDT, JAMESCHRISTIANSEN, HAYDON
Owner OVIVO INC
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