Hot air heating equipment based on thermal regeneration of old asphalt pavement

Abstract

The invention discloses hot-air heating equipment based on old asphalt pavement thermal regeneration, which belongs to the field of road maintenance equipment. Based on the old asphalt pavement thermal regeneration hot-air heating equipment, when it is not working or when the wind has just stopped, the inner self-bending baffle and the The self-expanding baffle can wrap the air outlet orifice, effectively prevent the blown hot air from carrying dust back from the air outlet, and protect the air outlet from being blocked by dust, thereby effectively reducing the hot air gathering at the hot air dispersion plate during the next use. Potential safety hazard, when working, the hot air generates a thrust on the self-absorbing and repelling cue to make it rotate, releasing the adsorption force of the inner self-bending and self-expanding baffles, and at the same time, under the action of the wind, the self-expanding baffles are unfolded in time, Restore the permeability at the air outlet. With the prolongation of the heating time, the heat softening sheet will be softened by heat, so that the bent connecting sheet can be deformed under the thrust of the hot air, so that the air output at the air outlet will be further increased, and the speed will be further accelerated. Heating efficiency.

Description

technical field [0001] The invention relates to the field of road surface maintenance equipment, more specifically, relates to hot air heating equipment based on thermal regeneration of old asphalt pavement. Background technique [0002] The hot-in-place regeneration unit is a construction machine that heats the road surface, loosens it, adds regeneration agent, new asphalt mixture, paves and compacts it to form a new road surface. Most of the hot-in-place regeneration comprehensive equipment remixers in the prior art adopt three methods to heat the road surface. They are infrared radiation heating, microwave heating and hot air circulation heating respectively. Infrared radiation heating has the following defects in use. First, the infrared radiation ability is not strong, the temperature gradient of the road surface is large, and the heating is uneven; second, it is difficult to effectively and timely control the temperature of infrared radiation heating during road surf...

AI Technical Summary

Problems solved by technology

One is that the heating depth is not easy to control, which affects the quality of the pavement after regeneration; the other is that microwave radiation can cause great harm to the human body

Third, the microwave heating components are easily damaged and the cost is high

[0003] The invention patent with the patent number CN201711339882.4 discloses a hot-air asphalt pavement heating equipment for thermal regeneration of old asphalt pavement. When the hot air is circulated and heated, the air outlet is facing the asphalt pavement. In order to ensure that the heat on the hot air heats the road surface Efficiency, the air outlet is very close to the road surface, due to the blowing force of the wind, the dust on the road surface will spread in the hot air cover with the wind, and will adhere to the air outlet, especially when the hot air is just finished, at this time the hot air exists to the hot air In the case of reverse osmosis inside the hood, a large amount of dust will be carried through the air outlet, causing the air outlet to be easily blocked. When heating next time, the heat will easily accumulate in the hot air hood, posing a greater safety hazard

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