A novel dense coupled nozzle atomizing nozzle

摘要

PROBLEM TO BE SOLVED: To provide a tightly coupled nozzle suitable for producing a gas spray metal powder. SOLUTION: An annular air chamber 3 is formed inside a nozzle body, and at least one intake passage 1 is opened to communicate the air chamber 3 to the outside of the nozzle body, and a lower portion of the annular air chamber 3 is provided. The first exhaust passage 5 and the second exhaust passage 6 are opened in the above, and the distance between the opening of the first exhaust passage 5 and the liquid path 4 discharged by the nozzle is the opening of the second exhaust passage 6. The angle at which the air flow direction discharged from the first exhaust passage 5 intersects the liquid path 4 is 18 ° -24 °, which is smaller than the distance to the liquid path 4, and the first exhaust passage is a ring-shaped gap. Yes, stable air flows into the first exhaust passage 5, the position of the opening of the first exhaust passage 5 is higher than the position of the opening of the second exhaust passage 6, and the nozzle is located between the two openings. A tightly coupled nozzle characterized in that the bottom surface of the main body has a slope transition, and the angle between the slope and the liquid path 4 is 45 ° -70 °. [Selection diagram] Fig. 3