(1) Increase the relative velocity difference between gas and liquid to increase the aerodynamic force, so that the droplet is broken more finely under the action of more atmospheric power. The simple idea is to increase the pressure, which makes the spray smaller.
(2) Increase the exit speed of the liquid phase nozzle to enhance the collision, so that the relative spray droplets can be further broken during the collision. Our experiments show that if the droplet exit velocity is small, it will converge into large droplet, and if the droplet exit velocity is large, the degree of atomization can be improved. However, this will reduce the relative velocity of the gas liquid and make the aerodynamic atomizing droplets worse.
(3) The experimental results show that the geometric shape and size of the nozzle and the mixing tube also have a great influence on the atomization performance of the atomizing nozzle. Therefore, when we design the atomizing nozzle model, in addition to considering their influence on atomization separately, we also consider the overall performance changes after they are combined together to achieve the atomization effect.
(4) Study the relationship between the flow, pressure and nozzle geometry and structure shape of the spray water supply system to improve the atomization effect. In particular, the water pressure of the water supply system has a greater impact on the atomization effect, and the higher the water pressure, the finer the water mist particles. But the problem with higher water pressure is that:
① Large energy consumption;
② All parts of the water supply system are under high pressure, prone to failure and short life, especially the internal spray system on the mining equipment.
How to improve the structure of pressure atomizing nozzle to obtain fine water mist particles under limited water supply pressure will be a problem that we need to continue to study and discuss in the future. We believe that with the continuous experiments and research of our technical personnel, this problem will be well solved. It is just a matter of time and continuous experiments.