Foaming device of warm mix asphalt and production equipment of warm mix asphalt

Abstract

The invention discloses a warm mix asphalt foaming device and production equipment thereof, the warm mix asphalt foaming device comprises an inner pipe, an outer pipe, flange connectors, a pressure regulating valve and a nozzle mounting seat, the two ends of the inner pipe are welded with the flange connectors, the inner pipe is sleeved with the outer pipe, and the outer pipe is shorter than the inner pipe and is arranged in the middle of the inner pipe; holes are formed in the two side pipe walls of the inner pipe, pressure regulating valves are installed in the holes, nozzle mounting seats are arranged on the two sides of the overlapped part of the inner pipe and the outer pipe respectively, and the nozzle mounting seats penetrate through the outer pipe and are communicated with the inner wall of the inner pipe; the inner pipe is filled with foaming blades, the foaming blades are three-section type spiral blades, flat bases are arranged on the two sides of each foaming blade, and the middle blade is in lap joint with the blades on the two sides. The foaming device is good and stable in foaming effect, a water heating device is additionally arranged in a water supply system, and the gas emission condition of the hot-mix asphalt mixture is improved.

Description

technical field [0001] The invention relates to the technical field of road engineering, and more specifically relates to a warm-mix asphalt foaming device and production equipment thereof. Background technique [0002] Foam warm mix asphalt is a kind of warm mix asphalt technology. A small amount of water and hot asphalt are simultaneously added to the foaming device. When the cold water is heated, the asphalt vaporizes rapidly, and the volume expands rapidly to form foam asphalt. Asphalt is sprayed into the mixing tank in the form of foam and mixed with aggregates to form asphalt mixture. Since the viscosity of foamed asphalt is much lower than that of base asphalt, the construction workability of the mixture is increased, so that the foamed asphalt mixture can be used faster than conventional hot mixing. When the asphalt mixture is lower than 20-30 ℃, mixing and construction. Foam warm mixing is called a truly green road construction technology. It does not use any addit...

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Problems solved by technology

In the process of use, we found that due to the rapid expansion of the volume of foamed asphalt during the production process, the nozzle is easy to stick to the asphalt binder. It is easy to cause no water or less water output from the nozzle, which affects the foaming rate of foamed asphalt. In the actual production process, the nozzle needs to be replaced or cleaned frequently; at the same time, the existing foaming device has no winter insulation and heating measures for the water pipes of the water supply system. The water pipe is easy to freeze and crack, and the warm mixing effect is not good due to the low water temperature in winter

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