Microwave thermal regeneration asphalt mixing station capable of infinitely adjusting mixing ratio of new and old materials

Abstract

The invention discloses a microwave thermal regeneration asphalt mixing station capable of infinitely adjusting the mixing ratio of new and old materials. The microwave thermal regeneration asphalt mixing station comprises an RAP material preparing and mixing system, a new material preparing and mixing system, a total stirring device and a finished product material storage bin. The RAP material preparing and mixing system consists of an intermittent weighing and batching bin, a continuous mixing cylinder, an RAP elevator, a hot air microwave drying device, an RAP storage bin, an RAP metering bin and an RAP mixer; the new material preparing and mixing system is sequentially composed of a new material proportioning bin, a hot air drying cylinder, a new material elevator, a vibration material distributing bin, a new material measuring bin and a new material stirring machine; the total stirring device is positioned below the new and old material stirrers; and the finished product material storage bin is used for storing the mixed recycled asphalt mixture. Different heating and mixing modes are adopted for new and old materials, so that various indexes of aged asphalt can be effectively recovered, excellent characteristics of new asphalt are kept, the quality of the mixture is improved, and the blending rate of the RAP material can be improved to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of pavement asphalt mixture mixing, and more specifically relates to a microwave heat regenerated asphalt mixing station capable of infinitely adjusting the mixing ratio of new and old materials. Background technique [0002] The statements herein merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] As the total mileage of roads is steadily increasing year by year, asphalt pavement is a pavement form with the advantages of smooth surface, no joints, and comfortable driving, so it is widely used by roads of all grades. The initial construction of the asphalt pavement was subjected to the combined effects of overload and harsh environment during its service period, and it could no longer meet the technical specifications for pavement operations. The commonly used treatment methods in engineering are: milling the original road surface and...

AI Technical Summary

Problems solved by technology

At present, the equipment for mixing a large amount of mixture is the traditional mixing station. The traditional asphalt mixing station uses a burner to generate hot air to heat the aggregate or RAP material (old material). If the temperature is too high, it will easily cause the mixture The use of electric heating and microwave heating technology to rapidly increase the temperature of aggregates and mixtures can effectively solve the pollution of the mixing station to the environment.

Since the existing traditional mixing station can only raise the temperature of RAP materials to 130°C, the temperature raising again must rely on the temperature of new aggregates, resulting in the blending rate of old materials being 30%, and the blending ratio cannot be further increased

Images