Plural component spray gun system
AssigneeWagner Spray Tech Corporation
InventorsJeffrey S. Jerdee, Thomas P. Daigle, Shawn C. Johnson
Life of this patent
Estimating the term…
Abstract
A spray gun for a plural component system is provided. The spray gun includes a first component delivery line and a second component delivery line. The spray gun also includes a nozzle, configured to receive and mix a first component received from the first component delivery line with a second component received from the second component delivery line. The spray gun also includes an air purge system configured to, when the spray gun is in a non-actuated position, purge the nozzle of the first and second components and, when the spray gun is in an actuated position, aid in atomization of the mixture of the first and second components.
Claims20
A nozzle for a plural component applicator, the nozzle comprising:
- a first component inlet configured to receive a flow of a first component;
- a second component inlet configured to receive a flow of a second component;
- a center post having an outer surface;
- an outlet;
- and
- a maze disposed between the first component inlet and the outlet and between the second component inlet and the outlet, the maze comprising:
- a first wall that contacts the center post and extends at least partially around the outer surface of the center post;
- and
- a second wall that is spaced apart from the first wall to form a first portion of the maze, wherein the second wall contacts the center post and extends at least partially around the outer surface of the center post;
- and
- wherein the maze is configured to mix the first component and the second component by, in the first portion of the maze, directing flow of the first component and the second component in a first direction of rotation about the center post, and, in a second portion of the maze, directing flow of the first component and the second component in a second direction of rotation about the center post that is opposite the first direction of rotation.
A nozzle for a plural component applicator, the nozzle comprising:
- a first component nozzle inlet configured to receive a first component;
- a second component nozzle inlet configured to receive a second component;
- an air inlet configured to receive air flow;
- a nozzle outlet configured to expel a mixture of the first component and the second component in a direction of a nozzle outlet axis;
- an air conduit having an outer surface, the air conduit providing an air flow path at least partially between the air inlet and the nozzle outlet;
- and
- a mixing structure comprising:
- a plurality of walls disposed transverse to the air flow path and extending at least partially around the air conduit, the plurality of walls configured to guide the first component and the second component along a component pathway formed by the mixing structure, wherein
- in a first portion of the component pathway, the first component and the second component rotate in a first direction of rotation about the nozzle outlet axis;
- and
- in a second portion of the component pathway, the first component and the second component rotate in a second direction of rotation about the nozzle outlet axis that is opposite the first direction of rotation.
A nozzle for a plural component applicator, the nozzle comprising:
- a nozzle body;
- a first component nozzle inlet configured to receive a first component;
- a second component nozzle inlet configured to receive a second component;
- a nozzle outlet configured to expel a mixture of the first component and the second component in a direction of a nozzle outlet axis;
- and
- a mixing structure, disposed upstream from the nozzle outlet, that forms a component pathway, the mixing structure comprising:
- a center post comprising an air inlet configured to receive an air flow and an air outlet configured to direct the air flow toward the nozzle outlet;
- and
- a plurality of walls extending at least partially around the center post, the plurality of walls configured to cause rotation of the first component and the second component in a first direction of rotation about the center post and in a second direction of rotation about the center post along the component pathway to generate the mixture of the first component and the second component.
Dependencies are inferred from the claim text.