The situation of emulsified asphalt equipment and emulsifier aqueous solution is different, and it is divided into two categories: the open system is used to control the flow of materials into the hopper, and the emulsion of asphalt emulsifier enters the machine by gravity. The length is more intuitive, the emulsified asphalt equipment is simple to combine, the disadvantage is that the air is simply introduced, and the output of the emulsifier is significantly reduced; the second is simple to use and cheap to produce emulsified asphalt production equipment.

The closed system is characterized by two, seamless pumps directly pumping asphalt and emulsifier aqueous solution into the emulsifier through the pipeline, indicating the flow meter, the advantage is that it is not easy to mix with air, easy to realize automatic control, and the quality and output of the emulsion are relatively stable; it is the form currently adopted by emulsified asphalt.