Construction waste classification and recovery method

Abstract

The invention belongs to the technical field of waste treatment, and particularly relates to a construction waste classification and recovery method. According to the recovery method, an involved crusher used for crushing wood construction waste comprises a machine shell, a crushing cavity is formed in the machine shell, a crushing wheel is rotationally connected in the crushing cavity, a supporting rod is arranged at the bottom of the machine shell, a material discharging hole is formed in the bottom of the crushing cavity, an inclined screen is arranged below the material discharging hole, the screen is fixedly connected with the supporting rod through a support, the lower portion of the screen is provided with a first bucket for collecting concrete particles, a feeding hopper is hingedto the upper portion of the machine shell, after the feeding hopper is turned over, the height of the crusher is reduced so as to facilitate transport, the upper part of the feeding hopper is large while the lower part of the feeding hopper is small, and a side wall of one side of the feeding hopper is vertically arranged and tangent to the crushing cavity. According to the method, the side wall of the one side of the feeding hopper is vertically arranged and tangent to the crushing cavity, wood waste with large length is enabled to be tightly attached to the side wall, tangent to the crushingcavity, of the feeding hopper when being crushed, the bounce of the wood is reduced, meanwhile, the situation that the feeding hopper is jammed by the wood is reduced, and then the crushing efficiency of the wood is increased.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, in particular to a method for classifying and recycling construction waste. Background technique [0002] Construction waste refers to the general designation of muck, waste concrete, waste masonry and other waste generated during the construction, laying or demolition, and repair of various buildings, structures, pipe networks, etc. by construction units or individuals. [0003] Construction waste is classified according to the source of generation. Construction waste can be divided into engineering dregs, decoration waste, demolition waste, and engineering mud. block, waste mortar, mud, asphalt block, waste plastic, waste metal, waste bamboo and wood, etc. [0004] With the acceleration of industrialization and urbanization, the construction industry is also developing rapidly, and the accompanying construction waste is increasing. The amount of construction waste in China has accoun...

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Problems solved by technology

[0005] In order to make up for the shortcomings of the existing technology, most of the construction waste is transported to the suburbs or villages by the construction unit without any treatment, and it is piled up in the open air or landfilled, which consumes a lot of construction funds such as land acquisition fees, garbage removal and transportation fees, and at the same time , problems such as dust, dust and sand flying in the process of cleaning and stacking have caused serious environmental pollution. After the wooden waste is piled up on the construction site, it is difficult to clean and transport quickly because of its different lengths. The wooden waste is often mixed with cement blocks. and iron nails and other impurities, it is difficult to recycle the problem, a kind of construction waste sorting and recycling method proposed by the present invention

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