Waste concrete crushing and screening device

Abstract

The invention relates to the field of concrete recycling, in particular to a waste concrete crushing and screening device. The waste concrete crushing and screening device comprises a roller structure, a jaw type crushing structure and a screening structure, and in the using process, the roller structure crushes large-size concrete blocks into small-size concrete blocks through rotation of rollers; the concrete blocks subjected to primary crushing need to be extruded and crushed through the jaw type crushing structure to separate metal materials in the concrete blocks, the metal materials in crushed products are separated through an electromagnetic structure on the screening structure, crushing and screening of the waste concrete are completed, and the problems that in the existing waste concrete crushing process, due to the fact that an existing concrete crushing device adopts a one-time crushing mode, concrete blocks with required sizes are difficult to crush, and meanwhile due to the fact that the screening capacity of the crushing device is insufficient, ferrous metals such as reinforcing steel bars and the like which influence the quality of the concrete blocks in crushed products cannot be screened and removed are avoided.

Description

technical field [0001] The invention relates to the field of concrete recycling, in particular to a device for crushing and screening waste concrete. Background technique [0002] With the demolition and engineering transformation of cities in our country, on the one hand, if a large amount of waste concrete produced due to demolition is not properly treated, it will waste a lot of land resources if it is discarded at will. On the other hand, waste concrete blocks that have been crushed and screened It can be a high-quality concrete aggregate, and a large amount of fine dust can also be used as a raw material for cement, so people pay more and more attention to the utilization of waste concrete. [0003] In the existing waste concrete crushing process, waste concrete with a large size is often crushed, but because the existing concrete crushing device often uses a crushing method, it is difficult to crush it into concrete blocks of the size we need at one time, and at the sa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a device for crushing and screening waste concrete to solve the problem that waste concrete with a large size is often found in the process of crushing waste concrete in the existing process, but because the existing concrete crushing device often uses primary crushing The method leads to the problem that it is difficult to break into concrete blocks of the size we need. At the same time, because of the insufficient screening capacity of the crushing device, the screening capacity for materials such as steel bars and other ferrous metals that affect the quality of concrete blocks in the crushed products is insufficient. The problem not only reduces the utilization rate of waste concrete, but also reduces the quality of the output concrete blocks

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