Crushing and repairing device for heavy metal soil

Abstract

The invention relates to the field of soil remediation, in particular to a crushing and repairing device for heavy metal soil. The device comprises a motor, a transmission shaft, an upper elastic grinding assembly, a lower elastic grinding assembly, a screening and filtering assembly and a sliding column. The upper elastic grinding assembly comprises an upper fixing outer ring, a plurality of upper elastic strips and an upper fixing inner ring, and the upper fixing outer ring is fixedly installed; the upper ends of the upper elastic strips are connected with the upper fixing outer ring, the lower ends are connected with the upper fixing inner ring, and the spiral direction of the projection in the horizontal plane from inside to outside is opposite to the rotating direction of the transmission shaft; the lower elastic grinding assembly comprises a lower fixing outer ring, a plurality of lower elastic strips and a lower fixing inner ring, and the lower fixing outer ring is rotatably arranged; the inner end of the sliding column is connected with the upper fixing inner ring, and the outer end is vertically slidably mounted on the lower fixing outer ring; the upper ends of the lower elastic strips are connected with the lower fixing outer ring, the lower ends are connected with the lower fixing inner ring, and the lower elastic strips and the upper elastic strips are opposite in rotation direction; stirring blocks are arranged in spaces defined by the upper elastic strips and the lower elastic strips; and the screening and filtering assembly is used for receiving and filtering the crushed soil.

Description

technical field [0001] The invention relates to the field of soil restoration, in particular to a crushing restoration device for heavy metal soil. Background technique [0002] Soil remediation refers to the use of physical, chemical and biological methods to transfer, absorb, degrade and transform pollutants in the soil, reducing its concentration to an acceptable level, or converting toxic and harmful pollutants into harmless substances. In the existing physical repair, there is a separation repair method, which screens out heavy metal pollutants in the soil through a screen, but the soil is prone to moisture and agglomeration, and the blocky soil will block the screen mesh during screening. The soil is pre-crushed. In order to improve the crushing efficiency, multi-stage crushing devices are often used. For two-stage crushing devices, due to the different sizes of soil lumps, it is easy to cause soil to accumulate in a certain stage of crushing device. The first-stage cr...

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Problems solved by technology

[0003] The invention provides a crushing and repairing device for heavy metal soil to solve the problem of stockpiling in the secondary crushing device of the existing soil repairing device

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