Recycling system for concrete waste

Abstract

The invention discloses a recycling system for concrete waste, and relates to the technical field of concrete recycling. The system includes a sand gravel separation unit, a sand mud separation unit and a sewage tank which communicate in sequence; the sand gravel separation unit is arranged above the sand mud separation unit, the sand gravel separation unit includes a sand gravel separation barrel, and the sand gravel separation barrel is provided with a material inlet, a material outlet door, sand flowing holes and a blocking mechanism for intermittently blocking the sand flowing holes; the sand mud separation unit includes a sand mud separation box arranged below the sand gravel separation barrel, the top of the sand mud separation box is provided with a sand inlet, an inclined screen plate is arranged in the sand mud separation box, the lower end of the screen plate is provided with a sand discharge opening, and a spraying device and a cleaning device are arranged above the screen plate; and the bottom of the sand mud separation tank is connected to a slurry outlet pipe, and the slurry outlet pipe is connected to the sewage tank. The system has the beneficial effects of thoroughly separating sand, stone, cement and water in the concrete waste, ensuring the purity of the components, and facilitating the recycling.

Description

technical field [0001] The invention relates to the technical field of concrete recycling, in particular to a concrete waste recycling system. Background technique [0002] In the actual production process of concrete mixing plants, it often occurs that the actual demand for concrete is less than the supply, so residual concrete is produced, and 1.5% to 2% of the "residual concrete" in the concrete mixer truck cannot be poured out every day, making waste concrete About 1%-1.5% of the total production. And these remaining concretes are an unavoidable phenomenon in the process of producing concrete. These residual concrete not only cause a waste of resources, but also form a vicious circle of environmental pollution, which does not meet the requirements of modern green and civilized construction. In order to recycle the above-mentioned concrete waste, it is first necessary to completely separate the stones, sand and water in the residual concrete waste. [0003] In order to...

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned invention can realize the separation of water, sand and stone, it is difficult to completely separate the stone and sand from the cement slurry in the concrete during the separation process, especially the way of separating sand and cement slurry by using the principle of settlement is obvious. It will cause a large amount of cement slurry to mix with the settled sand into the second auger, causing the separated sand to be difficult to recycle in the preparation of concrete due to its poor purity