Asphalt mixture regenerating heating stirring roller

Abstract

The invention discloses an asphalt mixture regenerative heating rod and mixing roller, and belongs to the concrete stirring technical field. The invention has a tilted roller supporting frame, a rolling ring, a roller and a roller driving device, wherein, the rolling ring is sleeved on the roller and supported by a rolling wheel arranged on the roller supporting frame, a burner is arranged at the lower end of the roller, a material outlet is arranged on the roller at the lower part of the burner, a material inlet is arranged at the other end of the roller, and a smoke outlet is arranged on the roller; wherein, an inner screening tube is sleeved inside the roller positioned at the material inlet end, and the inner screening tube is connected with the roller, the outer peripheral wall of the inner screening tube is composed of a screening mesh, a circular filtering mesh is sealed at the end part on the inner side of the inner screening tube, the material inlet is communicated with the inner screening tube, and an asphalt nozzle is arranged inside the roller positioned below the burner at the outlet end. The invention has compact and rational structure and high heat exchange efficiency, does not require secondary breakup of the waste asphalt mixture, can directly heat the block shape waste asphalt mixture for recycling; and the regenerated asphalt mixture can be directly utilized.

Description

technical field [0001] The invention belongs to the technical field of concrete mixing, and in particular relates to a regeneration heating mixing drum for asphalt mixture. Background technique [0002] Asphalt pavement is the main type of road, accounting for about 70-80% of the road surface. With the gradual aging of the pavement asphalt, the bonding force and strength will gradually decrease, which will eventually lead to car tracks, waves, cracks, potholes, etc. on the asphalt concrete pavement. When phenomena such as flying cannot meet the requirements of automobile safety, comfort, economy, speed, and driving, the road surface must be renovated or rebuilt. A large amount of waste materials will be produced during the renovation and reconstruction of asphalt pavement, among which the waste asphalt mixture contains gravel, sand and about 3-4% of aged asphalt. Waste, but also become a source of groundwater pollution. For the utilization of waste asphalt mixture, the exi...

AI Technical Summary

Problems solved by technology

For the utilization of waste asphalt mixture, the existing technology generally uses a milling machine to mill the asphalt pavement into granular and block shapes, and then breaks the granular or block waste asphalt mixture into small particles before it can be recycled by the regeneration supporting equipment. , this kind of asphalt pavement regeneration method, because it is crushed into granules, the cost is high, and the original gradation is destroyed, the powder increases, and the particle size of some aggregates decreases, so it has to be screened and classified before use. Greatly increased the cost of use

Images