Water spray nozzle selection
It is not easy to choose the right sprinkler for you. Next, I will help you analyze the issues that need to be considered in the process of sprinkler selection.
First, you need to determine the spray application, such as spray cooling, spray dust suppression, spray humidification, rain test, spray cleaning, blow drying, spray mixing, etc.
After determining the purpose of the nozzle, start to choose the shape of the nozzle. For example, if you need to use the sprinkler system to do a rain test for the car, then you need to clarify whether the nozzle is in a moving state or a fixed state relative to the car. If it is a moving state, then it is big Part of the spray shape can be competent, such as flat fan nozzles, full cone nozzles, and hollow cone nozzles.If the car is stationary relative to the nozzle, then a nozzle with a large coverage area is more suitable for you, such as a full cone nozzle.
The next thing we need to confirm is what pressure the nozzle works under. For example, in a car rain test, we use the nozzle to simulate the impact of rain on the car. The working pressure range of the nozzle is between 0.5bar and 3bar, which can simulate most of the spray. Rain state, so that we can determine the working pressure of the nozzle.
The next step is to determine the flow rate of the nozzle. The flow rate of the nozzle is directly related to the diameter of the sprayed droplets. In order to simulate the diameter of the raindrop, we need to find a nozzle close to the diameter of the raindrop. Here we choose the flow rate from 4L/min@2bar to 15L/ For the nozzles between min@2bar, if you want to simulate a smaller raindrop, choose a nozzle with a smaller flow rate. On the contrary, choose a nozzle with a larger flow rate.
Next, select the spray angle of the nozzle. The advantage of a large-angle full-cone nozzle is that it can cover a larger spray area, but the droplet density will be lower than that of a small-angle full-cone nozzle. In this case, we choose a small-angle full cone A shaped nozzle is more suitable. The spray angle is generally about 65 degrees.
The next step is to design the nozzle arrangement. You must first determine the distance between the nozzle and the roof of the car, and then obtain the coverage area of the nozzle according to the trigonometric function, and then divide the total area of the car by the coverage area of the nozzle to get Because the nozzle spray shape is conical, the spray coverage area of the nozzle must overlap to achieve complete coverage. Generally, the overlap rate is about 30%, so the number of nozzles just obtained *1.3, so The total number of nozzles in the entire system is obtained.
Finally, use the total number of nozzles * the flow rate of a single nozzle to get the rated flow parameters of the pump, and the pressure of the pump has been determined earlier, so we get the detailed parameters of the pump. Then according to the actual construction conditions, the pipeline selection, laying, installation and other design can be completed.
It can be seen that the choice of spray nozzle is a very troublesome thing, but the good news is that all these tasks can be done by our team of engineers. You only need to inform us about the purpose of the nozzle, spray area, and nozzle installation height. , Our engineers will choose the right nozzle for you, and assist you to complete the nozzle arrangement design, pump selection, pipeline selection and installation, etc. You are welcome to contact us at any time.