Recycled concrete aggregate machining device

Abstract

The invention provides a recycled concrete aggregate machining device. The recycled concrete aggregate machining device comprises a spiral conveyor and a screening box, wherein the spiral conveyor isobliquely arranged, the screening box is arranged below the spiral conveyor, a supporting frame is arranged at the lower end of the screening box, a material leaking port is formed in the lower end ofthe spiral conveyor, a material inlet is arranged at the position over the lower end, a water inlet is formed in the higher end of the spiral conveyor, a discharging end is arranged under the higherend of the spiral conveyor, the discharging end is in communication with the screening box, the screening box is provided with a plurality of layers of screens from top to bottom, the hole diameters of the screens are gradually reduced from top to bottom, the screening box is divided into a plurality of stirring cavities by the screens, each stirring cavity is provided with a material discharge port, the material discharge ports are provided with sealing plates, a water collecting cavity is arranged below the lowermost layer of screens, a water discharge port is formed in the water collectingcavity, stirring shafts are arranged in the stirring cavities, blades are arranged on the stirring shafts, and the stirring shafts are driven by a motor. According to the recycled concrete aggregate machining device, cleaning and impurity removal and screening of recycled concrete aggregate can be carried out at the same time, the operation is simple, the production efficiency is improved, and theenvironmental pollution is small.

Description

technical field [0001] The invention belongs to the field of building construction, in particular to a recycled concrete aggregate processing device. Background technique [0002] In recent years, the world's construction industry has entered a stage of rapid development. As the largest man-made material, the occupation of natural resources and the negative impact on the environment of concrete have also triggered discussions on sustainable development. The amount of waste concrete demolished every year in the world, waste concrete produced by new buildings, and waste concrete discharged from concrete factories and prefabricated construction plants is huge. The development and application of recycled concrete aggregates, on the one hand, solves the problem of the difficulty in handling a large amount of waste concrete and the resulting deterioration of the ecological environment; Consumption of natural aggregates, thereby reducing the mining of natural sand and gravel, fun...

AI Technical Summary

Problems solved by technology

[0003] Recycled concrete aggregate means that waste concrete blocks are crushed and graded, mixed with gradation in a certain proportion, and partially or completely replace natural aggregates (mainly coarse aggregates) such as sand and gravel. However, after crushing, concrete will be Carry a large amount of powder or fine sand, if not removed, it will affect the proportion of recycled concrete aggregate and affect the strength of recycled concrete

General impurity removal or dust removal devices are likely to cause a large amount of dust and cause environmental pollution

Moreover, during the processing of recycled concrete aggregates, general impurity removal and grading need to be handled separately, which is cumbersome and affects construction efficiency.

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