Static spray mixer

Patent metadata

Field	Value
Publication number	US-10065200-B2
Application number	US-85042010-A
Country	US
Kind code	B2
Filing date	Aug 4, 2010
Priority date	Aug 20, 2009
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A static spray mixer is proposed for the mixing and spraying of at least two flowable components, having a tubular, one-piece mixer housing ( 2 ) which extends in the direction of a longitudinal axis (A) up to a distal end ( 21 ) which has an outlet opening ( 22 ) for the components, having at least one mixing element ( 3 ) arranged in the mixer housing ( 2 ) for the mixing of the components as well as having an atomization sleeve ( 4 ) which has an inner surface which surrounds the mixer housing ( 2 ) in its end region, wherein the atomization sleeve ( 4 ) has an inlet ( 41 ) for a pressurized atomization medium. A plurality of grooves are provided in the outer surface of the mixer housing ( 2 ) or in the inner surface of the atomization sleeve ( 4 ) which respectively extend in the direction of the longitudinal axis (A) and through which the atomization medium can flow from the inlet ( 41 ) of the atomization sleeve ( 4 ) to the distal end ( 21 ) of the mixer housing ( 2 ).

First claim

The invention claimed is:

1. A static spray mixer for the mixing and spraying of at least two flowable components, the static spray mixer comprising: a tubular, one-piece mixer housing which extends in the direction of a longitudinal axis (A) up to a distal end which has an outlet opening for the components, having at least one mixer element arranged in the mixer housing for the mixing of the components and the at least one mixer element being completely accommodated in the mixer housing as well as having an atomization sleeve which has an inner surface which surrounds the mixer housing in its end region, wherein the atomization sleeve has an inlet for a pressurized atomization medium, characterized in that a plurality of grooves, defined by a space between the mixer housing and the atomization sleeve, are provided in the inner surface of the atomization sleeve which respectively extend in the direction of the longitudinal axis (A) and through which the atomization medium can flow from the inlet of the atomization sleeve to the distal end of the mixer housing.

2. The static spray mixer in accordance with claim 1 , wherein the atomization sleeve is connected with a thread-free connection to the mixer housing.

3. The static spray mixer in accordance with claim 1 , wherein the mixer housing has a distal end region which tapers toward the distal end and wherein the inner surface of the atomization sleeve is designed for cooperation with the distal end region.

4. The static spray mixer in accordance with claim 3 , wherein the outer surface of the mixer housing in the distal end region is designed at least partly as a frustoconical surface.

5. The static spray mixer in accordance with claim 4 , wherein the frustoconical surface forms a cone angle (a) with the longitudinal axis (A) which amounts to at least 10° and at most 45°.

6. The static spray mixer in accordance with claim 1 , wherein a ring space is provided between the outer surface of the mixer housing and the inner surface of the atomization sleeve and is in flow communication with the inlet of the atomization sleeve and with the plurality of grooves.

7. The static spray mixer in accordance with claim 1 , wherein the plurality of grooves are distributed uniformly over the inner surface of the atomization sleeve.

8. The static spray mixer in accordance with claim 1 , wherein each groove has a depth (T) in the radial direction which is at most half as big as the extent (B) of the respective groove in the direction perpendicular to the longitudinal axis (A) and to the radial direction.

9. The static spray mixer in accordance with claim 1 , wherein each groove has a depth (T) in the radial direction which increases toward the distal end of the mixer housing.

10. The static spray mixer in accordance with claim 1 , wherein the atomization sleeve is fastened to the mixer housing by means of a sealing snap-in connection.

11. The static spray mixer in accordance with claim 1 , wherein the mixer housing has a substantially rectangular cross-sectional surface perpendicular to the longitudinal axis (A) outside the distal end region.

12. The static spray mixer in accordance with claim 1 , wherein the mixer element is designed rectangular and perpendicular to the longitudinal direction (A).

13. The static spray mixer in accordance with claim 1 , wherein the inlet of the atomization sleeve is fixed to a supply for the atomization means.

14. The static spray mixer in accordance with claim 1 , wherein the mixer housing and/or the atomization sleeve are injection molded from a thermoplastic.

15. The static spray mixer in accordance with claim 1 , wherein the mixer element is designed in one piece and is injection molded from a thermoplastic.

16. The static spray mixer in accordance with claim 1 , wherein the atomization sleeve is a one-piece atomization sleeve.

Assignees

• Hiemer Andreas
• Sulzer Mixpac Ag

Inventors

• Hiemer Andreas

Classifications

• B05B7/0807 Primary

  to form intersecting jets · CPC title

• B05B7/0408

  with arrangements for mixing two or more liquids · CPC title

• B05C17/00553

  with means allowing the stock of material to consist of at least two different components · CPC title

• B05B5/025

  Discharge apparatus, e.g. electrostatic spray guns · CPC title

• B05B7/10 Primary

  producing a swirling discharge · CPC title