Hollow conical nozzle: KZ1 nozzle has simple structure, uniform spray and convenient use; it is mainly suitable for secondary cooling of billet continuous casting machine in steel plant, and can also be used for gas cleaning, cooling water treatment, product decontamination and spraying. Wet, sea water spray, etc. KZ2 nozzle has the characteristics of misalignment of the spray center and the inlet axis. Its spray form is a cone-shaped hollow ring shape with a small atomizing particle size and is not easy to block. It is mainly used for dust removal, air humidification, product decontamination, sulfur Combustion, and other equipment requiring cooling.