Spray mixer for mixing and spraying at least two flowable components

Patent metadata

Field	Value
Publication number	US-9878335-B2
Application number	US-201314400984-A
Country	US
Kind code	B2
Filing date	Apr 22, 2013
Priority date	May 14, 2012
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

The invention relates to a spray mixer for mixing and spraying at least two flowable components. The spray mixer ( 22 ) is provided with a tubular outer mixer housing ( 23 ) which extends in the direction of a mixer longitudinal axis ( 24 ) from a mixer start ( 25 ) to a distal mixer end ( 26 ). A mixer inner housing ( 29 ) which accommodates a mixer element ( 33 ) is arranged in the mixer outer housing ( 23 ). A mixer compressed air inlet ( 31 ) is arranged at the mixer start ( 25 ). The mixer compressed air inlet ( 31 ) is connected by means of a mixer compressed air channel ( 30 ) to an annular mixer compressed air outlet ( 32 ) which encloses a mixer outlet opening ( 35 ). In the operation of the spray mixer ( 22 ), compressed air is supplied via the mixer compressed air inlet ( 31 ), flows through the mixer compressed air channel ( 30 ) to the mixer compressed air outlet ( 32 ) and atomizes and sprays the material emerging from the mixer outlet opening ( 35 ). In order for the spray mixer to be easy to handle, the mixer outer housing ( 23 ), the mixer inner housing ( 29 ) and the mixer element ( 33 ) are combined in a single unit. This is achieved by connecting the indicated components to each other in a manner to secure against loss.

First claim

The invention claimed is:

1. A spray mixer for mixing and spraying at least two flowable components comprising:
a tubular outer mixer housing extending in a direction of a longitudinal mixer axis from a mixer start up to a distal mixer end;
an inner mixer housing arranged inside the outer mixer housing;
at least one mixing element arranged in the inner mixer housing for mixing the components;
a mixer passage for compressed air extending from a mixer inlet for compressed air arranged at the mixer start up to a mixer outlet opening, the mixer passage being formed between the inner mixer housing and the outer mixer housing,
the outer mixer housing, the inner mixer housing and the mixing element being formed as a one-piece construction such that the outer mixer housing, the inner mixer housing and the mixing element are captively connected to one another in an unassembled state of the spray mixer, and
a mixer inlet connecter having a first mixer inlet opening and a second mixer inlet opening configured to receive the components,

the first mixer inlet opening and the second mixer inlet opening of the mixer inlet connecter being configured to be connected directly to corresponding cartridge outlet openings of a multicomponent cartridge that has pistons to displace the components, the unassembled state being a state in which the spray mixer is not attached to the multicomponent cartridge.

2. The spray mixer in accordance with claim 1 , wherein
the spray mixer is capable of being connected to the corresponding cartridge outlet openings of the multicomponent cartridge in one work step.

3. The spray mixer in accordance with claim 1 , further comprising
the first and second mixer inlet openings configured to receive the components and the mixer inlet connector further having the mixer inlet for compressed air.

4. The spray mixer in accordance with claim 3 , wherein
the mixer inlet connector is oriented to extend along the direction of the longitudinal mixer axis.

5. The spray mixer in accordance with claim 3 , wherein
the mixing element is a static mixing element.

6. The spray mixer in accordance with claim 5 , wherein
the mixing element and the mixer inlet connector are made in one piece.

7. The spray mixer in accordance with claim 1 , wherein
the outer mixer housing, the inner mixer housing and the mixing element are made of plastic.

8. The spray mixer in accordance with claim 1 , wherein
the outer mixer housing, the inner mixer housing and the mixing element are manufactured by an injection molding process.

9. The spray mixer in accordance with claim 3 , wherein
the mixer inlet connector is configured to connect the outer mixer housing, the inner mixer housing and the mixing element to the multicomponent cartridge in one step.

10. The spray mixer in accordance with claim 1 , wherein
the spray mixer is further configured to be connected directly to a cartridge outlet for compressed air.

Assignees

• Sulzer Mixpac Ag

Inventors

• Müller Jörg
• Lavelanet Richard

Classifications

• B01F5/0609

  Operations & Transport · mapped topic

• B01F3/10

  Operations & Transport · mapped topic

• B05B7/0408 Primary

  with arrangements for mixing two or more liquids · CPC title

• B05B7/06

  with {at least} one outlet orifice surrounding another approximately in the same plane · CPC title

• B05B7/066

  with an inner liquid outlet surrounded by at least one annular gas outlet · CPC title