Foam asphalt production device and automatic production method

Abstract

The invention discloses a foam asphalt production device and an automatic production method. The device comprises a hot asphalt tank, a water tank, an air compressor, a hot asphalt feeding device, a water feeding device, an air feeding device, a foam asphalt generator and a PLC control system. Hot asphalt, water, and air are mixed in the foam asphalt generator to generate foam asphalt, and the foamed asphalt is homogenized by the foam asphalt generator. The hot asphalt, water, and air feeding devices respectively transfer the hot asphalt, water, and air into the foam asphalt generator from the hot asphalt tank, the water tank, and the air compressor. The PLC control system sends the measured temperature, flow, and pressure signals of hot asphalt, water, and air to a PLC controller to perform control calculation, then carries out cascade-stage control adjustment on the flow, temperature, and pressure of hot asphalt, water and air according to the foaming degree of foam asphalt, and thus achieves the automatic production of foam asphalt.

Description

technical field [0001] The invention belongs to the field of asphalt processing, and in particular relates to a foamed asphalt production device, a method for efficiently foaming hot asphalt and realizing automatic production. Background technique [0002] Foamed asphalt is the asphalt containing a large amount of foam formed by the hot asphalt being foamed by foaming media such as water, water vapor or foaming agent, and numerous bubbles with different diameters are rapidly generated in the asphalt. The surface area of ​​the asphalt increases rapidly, and the volume of the asphalt increases. When the increase is 10 to 15 times, the free energy of the asphalt surface will increase accordingly. When the foamed bitumen is mixed with the mineral material, it spreads quickly and evenly on the surface of the mineral material to form an asphalt film, which makes the combination of the bitumen and the mineral material more compact and stronger. It saves the amount of asphalt and ...

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the deficiencies in the prior art of low asphalt foaming rate, unfoamed part of asphalt, uneven foaming of asphalt, manual control is difficult to meet the requirements of continuity, stability and accuracy of production, and provides a foamed asphalt production device And its automatic production method can make asphalt, water and air mix and foam quickly, achieve the effect of improving the quality of asphalt foaming and increasing the foaming efficiency, and realize the automatic production of foamed asphalt

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