Asphalt is the most important bonding material for road construction in the world, and the mechanical equipment for asphalt is an important part of the road maintenance machinery. The main equipment is asphalt storage, transportation equipment, heating and melting equipment, character improvement and processing equipment.
1. Heat conduction medium heating furnace
The viscosity of asphalt varies with temperature and can only be processed and used after heating. The heating methods are direct heating and indirect heating. At present, the direct heating is mainly heat pipe type, the indirect heating is mainly thermal oil, and the direct flame heating method is basically not used.
Heat conduction medium heating furnace, also known as heat conduction oil heating furnace, is a common heating method. Heat conduction oil absorbs the heat of fuel combustion, and then uses hot oil to heat the asphalt, which can ensure that the asphalt will not burn and age.
The structure of the heat transfer oil furnace is generally vertical, horizontal, and truck-mounted, and the thermal power is generally 1-20 million kcal (12-24000kw). In addition, there are electric heating, water heating, steam heating and other ways.
Heat conduction oil furnace is generally composed of furnace body, burner, oil storage tank, expansion tank, hot oil pump, pipeline and strip control valve, electronic control device and other parts.
2. Asphalt storage (station)
Asphalt depot (station) is a place to store and transfer bulk asphalt, generally built in ports, docks and railway stations, to receive and unload the liquid asphalt transported by ships and trains. Asphalt warehouse is mainly equipped with conveying pipeline, heat conduction oil furnace, unloading device, filling device, laboratory, modification and emulsification workshop.
3. Asphalt storage tank
The storage capacity of each tank is generally 500 ~ 2000t, with heating pipes inside and insulation materials such as rock wool wrapped outside.
4. Liquid asphalt truck
The liquid asphalt transport vehicle is suitable for medium and short distance transportation to keep the asphalt in hot liquid state, and the transport vehicle is equipped with thermal insulation heating device and anti-surge partition.
5. Asphalt heating tank
The asphalt heating tank is mainly heated and outputs hot asphalt at the required temperature.
6. Asphalt modification equipment
Asphalt modification equipment is to add polymers such as rubber and resin to asphalt to form a stable mixture. It can improve the adhesion of asphalt and the resistance to high and low temperature.
Asphalt modified production equipment is composed of asphalt storage tank, heating tank, colloid mill, finished product tank, pump, valve and control system.
7. Asphalt emulsifying equipment
Asphalt emulsifying equipment is the equipment that mixes water and asphalt together to form emulsion under the action of emulsifier. Emulsified asphalt can be constructed at room temperature.
8. Asphalt pump, valve
Asphalt pump, valve is an indispensable part of the center of asphalt processing equipment, many kinds, commonly used asphalt pump are: involute gear pump, internal gear pump, three screw pump, double arc gear pump.
9. Asphalt filling and stripping equipment
Asphalt canning and stripping equipment is an important equipment for asphalt transportation. Flexible packaging bags are made of special materials and can be melted together with asphalt.
Cylindrical asphalt is a commonly used form of transportation packaging, and special equipment is required to take out the asphalt.
If you are interested in the process of asphalt mixing, this article my help you.