Nozzle for spraying liquid polymer preparations and spraying method utilising the nozzle

A method for spraying a mixture comprising at least a first liquid in the form of a liquid preparation of water-soluble or water-swellable polymers and at least a second liquid, wherein said method comprises implementing a nozzle for simultaneously spraying at least the first liquid and the second liquid, the nozzle including:

• a body provided with a first chamber within which the first liquid flows and a second chamber within which the second liquid flows, each of the two chambers having a through-hole on the outside of the body, wherein the first chamber and the second chamber form a truncated cone shape having a tapered portion upstream of the through-holes, and wherein within the truncated cone shape, the first chamber and the second chamber are positioned concentrically in relation to one another, such that the first liquid and the second liquid flow concentrically relative to one another as they approach the through-holes, and
• a deflector secured to the body arranged downstream from at least one of the through-holes, in the direction of flow of the first and second liquids, said deflector being capable of modifying the direction of flow of the first and second liquids,
• wherein:
• the through-holes are aligned on the same plane on the outside of the body and are positioned concentrically in relation to one another such that the first and second liquids mix at the latest when they come into contact with the deflector;
• and
• the deflector assumes the form of a cone of revolution wherein the apex thereof is oriented towards the through-holes and wherein the axis of the deflector is combined with the axis of said holes.