How to choose the fog gun machine to avoid stepping on thunder?

How to choose the fog gun machine to avoid stepping on thunder? 

Many of the guidance documents of the Housing and Urban-Rural Development Committee and the environmental protection department can see relevant provisions that require construction sites and other industrial and mining enterprises that discharge unorganized dust to be equipped with fog cannons. Indeed, for the treatment of unorganized dust, the fog cannon is currently one of the most economical and simplest treatment equipment.

The most critical parameter of the fog cannon is the spray distance. Most manufacturers use the spray distance as the specification of the fog cannon (for example DMC-60, which means that the spray distance is 60 meters). Many people also use this parameter as an important basis for the selection of fog cannons when purchasing fog cannons. But in the actual use process, it will be found that the water mist sprayed by the fog cannon can not cover this area at all, and the distance from the fog cannon to the farthest area of ?? effective dust reduction will generally be shortened.

Why is there such a situation? This is all caused by the spray distance parameters of the fog gun machine.

In the process of purchasing the fog cannon, if you are careful, you will find that most manufacturers will have a note when introducing the spray distance parameter, indicating that the spray distance is the test value under the indoor static wind state. Obviously, such a spray distance is not an effective dust reduction distance. The principle of spray dust removal is to require the water mist to fully combine with the dust in the air to form a mass, and then sink to the ground under the action of gravity. Whether the spray can achieve the effect of dust reduction, there is a prerequisite, that is, the concentration of water mist should be higher than that of dust.

The spray distance is not equal to the effective dust suppression distance!