System for sorting blocky solid construction waste on basis of multiple detection modes

Abstract

The invention discloses a system for sorting blocky solid construction waste on the basis of multiple detection modes. The system is provided with one or more sorting units. Each sorting unit comprises a detection and recognition part, a jet part, a sorting part and a real-time detection and control system. Each detection and recognition part is provided with a sensor array and a conveying belt. Each sensor array comprises various sensor components located above and below the corresponding conveying belt. Each real-time detection and control system is used for achieving signal processing of the corresponding sensor array and controlling the corresponding conveying belt and high-pressure air pumps of the corresponding jet part. By judging object physical and chemical properties obtained after signal processing, the construction waste is selectively jetted into different sorting boxes through high-pressure air guns. The construction waste which is subjected to mechanical sorting (involving primary smashing and screening) and has the similar density is differentiated through spectroscopy and a plurality of other physical and chemical characteristic parameters, in this way, sorting of the solid construction waste is achieved. The system has high analytical precision, cost performance and efficiency and is easy to maintain.

Description

technical field [0001] The invention relates to a sorting system for construction waste based on sensor detection, in particular to a sorting system for bulk solid construction waste with similar density. Background technique [0002] Construction waste refers to solid waste generated during the construction process or during the maintenance and demolition of old buildings, including soil, stones, concrete blocks, broken bricks, wood, metal, pipes and electrical waste. Construction waste is considered as a misplaced resource, accounting for more than 90% of stones, concrete blocks, broken bricks, has stable physical and chemical properties, and is highly recyclable and circular. Professor Ma Baoguo of Wuhan University of Technology has proved that the main components of solid construction waste powder are silica, calcium oxide (calcium hydroxide, calcium silicate hydrate, calcium aluminate hydrate, calcium carbonate or anorthite in crushed stone, etc.) The contents are 52.4...

AI Technical Summary

Problems solved by technology

The existing domestic construction waste sorting equipment has problems such as difficulty in separating different materials, especially technical problems such as high difficulty and high cost of different materials with similar specific gravity (typically, the specific gravity of concrete is 1.6, while the specific gravity of fired bricks is 1.3, Concrete and brick have similar specific gravity)

It is difficult and costly to achieve fine sorting of construction waste. How to effectively separate different materials such as bricks and concrete blocks from sand and gravel aggregates is a key technical difficulty that needs to be solved to improve the quality of resource reuse.

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