Soil crushing device with screening function

Abstract

The invention discloses a soil crushing device with a screening function and belongs to the technical field of environment repair. The soil crushing device comprises a box body, a partitioning assembly and a crushing assembly, wherein a feeding hopper is arranged on the top; the partitioning assembly is arranged in the box body to partition the inner side of the box body into upper and lower cavities, a gas guide part is arranged around the inner wall of the upper cavity of the box body and is connected to a steam generator arranged on the outer side of the box body through an air conveying pipe, and a gas sucking pump for sucking gas in the upper cavity of the box body is arranged in the box body; and the crushing assembly is arranged in the lower cavity of the box body and is driven by amotor to rotate to crush an object, and a screen plate is arranged below the crushing assembly for screening particles of crushed objects. The soil crushing device screens and crushes bulky cohesivesoil simultaneously. In order to improve the crushing efficiency, the crushing efficiency is improved by reducing the content of volatile liquids in soil by way of steam extraction, and the soil is repaired. The processed soil particles can be in full contact with a chemical repairing agent.

Description

technical field [0001] The invention belongs to the technical field of environmental restoration, and in particular relates to a soil crushing device with a screening function. Background technique [0002] Soil pollution has a great impact on human production and life. At present, the soil pollution area of ​​cultivated land in my country accounts for about one-fifth of the cultivated land area in my country. The control of soil pollution mainly includes physical, chemical, biological or combined methods. Soil control In the remediation process, it is almost always necessary to pre-treat the soil to break the soil to be treated. If the contaminated soil is remediated, due to the uneven particle size of the soil, the remediation agent cannot be effectively mixed with the soil, and the remediation effect cannot be guaranteed. The existing crushing equipment can only break the dried blocky contaminated soil into small pieces, and cannot achieve powder or finer particle size. In ...

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Problems solved by technology

[0002] Soil pollution has a great impact on human production and life. At present, the soil pollution area of ​​cultivated land in my country accounts for about one-fifth of the cultivated land area in my country. The control of soil pollution mainly includes physical, chemical, biological or combined methods. Soil control In the remediation process, it is almost always necessary to pre-treat the soil to break the soil to be treated. If the contaminated soil is remediated, due to the uneven particle size of the soil, the remediation agent cannot be effectively mixed with the soil, and the remediation effect cannot be guaranteed. The existing crushing equipment can only crush the dried blocky contaminated soil into small pieces, and cannot achieve powder or finer particle size. In addition, the large-grained soil crushed by conventional equipment still needs to be repaired

At the same time, some soil remediation and treatment projects (such as solidification and stabilization treatment) have requirements on the particle size of the soil. Conventional pretreatment crushing equipment can only be crushed, and the soil particle size cannot be guaranteed.

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