Aggregate dust removing device and method used before bin cooling and for asphalt concrete mixing equipment

Abstract

The invention relates to the field of aggregate dust removal before bin cooling and for asphalt concrete mixing equipment, in particular to an aggregate dust removing device and method used before bin cooling and for the asphalt concrete mixing equipment. The aggregate dust removing device used before bin cooling and for the asphalt concrete mixing equipment comprises an aggregate conveying device, a drying roller, a winnowing device and a dust remover. The winnowing device comprises a winnowing chamber and an air blower; the winnowing chamber is provided with a feed port, a discharge port, an air inlet and a dust suction port, the feed port is communicated with the drying roller, the discharge port is used for discharging screened aggregate, the air inlet is communicated with the air blower, and the dust suction port is connected with the dust remover; the air blower is provided with an air inlet and an air outlet, the air inlet is connected with the dust remover, and the air outlet is connected with the air inlet of the winnowing chamber. Meanwhile, the air blower blows clean air in the dust remover to blow dust of the aggregate in the winnowing chamber. According to the invention, the dust content of the aggregate for asphalt concrete is greatly lowered, waste is avoided, resources are saved, the arrangement is reasonable, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of asphalt concrete mixing equipment, in particular to a powder-removing method for aggregates before a cold feed bin of the asphalt concrete mixing equipment. Background technique [0002] With the continuous improvement of construction units' requirements for flexible control of the production process of asphalt mixing equipment, the simultaneous production of commercial asphalt mixtures of different specifications has been paid more and more attention, especially in the asphalt mixing equipment for aggregate control level and seamless feeding of the whole station Higher requirements have also been raised. [0003] In order to solve the above problems, the inventor of the present application provides a continuous asphalt mixing equipment (authorized announcement number CN202805426U), which includes an aggregate weighing and drying supply assembly, an aggregate hoist, a mixing assembly, and an asphalt suppl...

AI Technical Summary

Problems solved by technology

At present, the sand and gravel used in domestic asphalt concrete generally have a powder content that exceeds the standard, which will cause the finished asphalt concrete to be dry and the quality is not up to standard. When used in road construction, it is easy to crack, the embedding is not enough, the structure is not good, and rutting is easy to occur. To solve the above The problem is that the existing asphalt concrete mixing equipment processes the aggregates successively by drying and sieving. The above-mentioned processes require a large energy loss, a long production cycle, and high production costs, and the dust in the aggregates cannot be recycled. Therefore, there is room for further improvement

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