The utility model relates to the technical field of aluminum
powder atomizers, in particular to an
atomizer nozzle assembly which comprises a
nozzle body, and the
nozzle body comprises a molten aluminum circulation body, a primary
air cavity wrapping body and a secondary
air cavity wrapping body. The replaceable
nozzle is composed of a round
pipe section, a
flange section connected with the lower end of the round
pipe section and an upper bent section connected with the outer edge of the
flange section, a limiting spigot corresponding to the round
pipe section is formed in the lower edge of the inner circumferential face of the molten aluminum circulation body, and a plurality of primary
airflow inlets corresponding to the primary
impact flow channels are formed in the outer circumferential wall of the round pipe section. A plurality of secondary
airflow inlets corresponding to the secondary
impact runners are formed in the
peripheral wall of the round pipe section, an annular positioning table located on the inner side of the upper bent section of the replaceable nozzle is arranged at the lower end of the secondary
air cavity wrapping body, and the
flange section of the replaceable nozzle is connected and fixedly connected with the bottom face of the annular positioning table. When the nozzle is blocked, the nozzle main body does not need to be replaced, so that the use cost is saved.