Engineering muck pretreatment integrated equipment

Abstract

The invention discloses engineering muck pretreatment integrated equipment which comprises an intelligent monitoring system, a feeding system, a multi-stage impurity removal system, a multi-stage crushing system, a granulation system, a screening system and the like, the feeding system, the multi-stage impurity removal system, the multi-stage crushing system, the granulation system, the screening system and the like are sequentially connected, the feeding system comprises a vibrating feeding bin, and a screen with a spring damping function is arranged at an inlet of the feeding bin; the multi-stage impurity removal system comprises an electromagnetic iron removal unit and a light substance removal unit, the multi-stage crushing system comprises a crushing bin and a three-stage rotating hammer unit, the granulation system comprises a granulation bin and a soil cutter unit, and the intelligent monitoring system monitors working current fluctuation of all the systems in real time. The pretreatment process of firstly removing impurities, then crushing, re-granulating and finally screening is adopted for the engineering residue soil, and the method has the advantages of being reasonable in process design, good in pretreatment effect, high in efficiency and the like; the phenomenon that muck adheres to the wall and blocks the wall is avoided, and the pretreatment efficiency is improved; the functions of impurity removal, crushing, granulation, screening and the like are integrated, the applicability to engineering residue soil with different characteristics is high, and the popularization and application potential is large.

Description

technical field [0001] The invention belongs to the technical field of construction waste resource utilization equipment development, and in particular relates to an integrated equipment for engineering slag pretreatment. Background technique [0002] With the continuous development of urban underground space, the amount of engineering muck produced by engineering excavation and shield construction has increased sharply. According to relevant industry statistics, the total amount of newly discharged construction waste in my country in 2020 will be nearly 4 billion tons, of which construction waste accounts for about 70-80%, which has become an important component of construction waste. Therefore, how to scientifically and effectively recycle engineering waste is an urgent problem that needs to be solved in the current stage of urban sustainable development. [0003] Due to its wide sources, large differences in characteristics, complex components and low strength, engineeri...

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Problems solved by technology

[0003] Engineering dregs are difficult to use directly due to their wide sources, large differences in properties, complex components, and low strength. Necessary pretreatments are required, such as removing impurities, adjusting soil properties, and reducing particle size. Currently, they are used in The equipment for pretreatment of hard construction waste such as masonry, concrete and stone is often prone to blockage due to the high adhesion of muck, and the treatment effect is poor and the efficiency is low.

There are also related patents and papers that mention the sediment separation method, that is, mud is mixed with water to make mud, and sand aggregates with high added value are recovered after filtration and washing, but a large amount of mud is generated from this, such as direct discharge The pollution is relatively large, and the cost of mechanical dehydration is high, and it is difficult to popularize and apply

In view of the remarkable argillaceous resource properties of engineering slag, considering the characteristics of complex components and high adhesion of engineering slag, it has great potential for resource utilization but is difficult to deal with. It is urgent to develop a high-efficiency pretreatment of engineering slag. Advanced equipment to realize the pretreatment of dregs such as impurity removal, crushing and screening, and improve the resource utilization rate of engineering dregs

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