Asphalt plant mixing heat regeneration drying drum

Abstract

The invention provides a plant-mixing thermal regeneration drying rotary drum for asphalt. By using the plant-mixing thermal regeneration drying rotary drum for the asphalt, the ageing of fine aggregate asphalt can be effectively decreased; further, the adhesion, on the inner wall of a drum body, of an asphalt material is avoided. The plant-mixing thermal regeneration drying rotary drum for the asphalt comprises a supporting seat, the drum body, carrier rollers, rolling rings and driving devices, wherein the carrier rollers are fixedly arranged on the supporting seat; the carrier rollers are connected with the driving devices; the carrier rollers support the rolling rings; the rolling rings are mounted on the drum body in a sleeving manner; the drum body is arranged on the supporting seat, and further forms a certain included angle together with the horizontal plane and is laid in a high-low manner; a higher end of the drum body is a material charging end, while a lower end of the drum body is a material discharging end; the interior of the drum body is divided into a material guiding area, a drying area, a material curtain area and a material discharging area sequentially along the axial direction and from the material feeding end to the material discharging end; the material guiding area is provided with a material guiding board, which is laid in a spiral manner, along the inner wall of the drum body; the drying area is provided, along the inner wall of the drum body, with multiple material overturning lining boards, and multiple material pushing spiral boards which are laid in the spiral manner; the thread pitches of the material pushing spiral boards are more than the thread pitches of the material guiding boards; the material curtain area is provided with multiple material lifting boards which are laid in a staggering manner; rake tooth structures are adopted for the material lifting boards; a tail segment of the material curtain area is provided with a material cleaning chain; the material cleaning chain can slide along the axial direction of the drum body.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a drying drum for asphalt plant mixing heat regeneration. Background technique [0002] Plant-mixed heat regeneration is to recycle the old asphalt concrete pavement surface layer through excavation or milling to the mixing plant, carry out pretreatment such as crushing and screening as required, and then add a certain proportion of new aggregate and new asphalt , regeneration agent, etc., after heating and mixing with special recycled asphalt concrete mixing equipment, transport it to the construction site, and pave to form a new asphalt concrete pavement structure layer with certain road performance. [0003] The drying drum is a key component of asphalt mixing equipment and one of the indispensable key equipment in pavement construction. Its main function is to dry the moisture of the aggregate required for asphalt pavement construction and heat it to...

AI Technical Summary

Problems solved by technology

[0004] At present, there are still many problems in the use of factory-mixed heat regeneration drying drums. The drying system must not only ensure that the old recycled materials reach a certain temperature, but also ensure that the asphalt adsorbed on the surface does not age. Due to the adhesion characteristics of recycled materials after heating, a large amount of asphalt materials will be attached to the drying drum copying boards on the market

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