Multi-particle-size-section soil continuous washing and sieving all-in-one machine

Abstract

The invention discloses a multi-particle-size-section soil continuous washing and sieving all-in-one machine. The all-in-one machine comprises a shell, wherein at least three washing chambers are arranged in the shell from the top to the bottom; every two adjacent washing chambers communicate with each other through one layer of sieve net obliquely placed; each washing chamber is provided with a gas guide-in pipe used for guiding in compressed air and a material outlet connected with a material collector arranged outside the shell; a screw elevator for lifting materials into the material collector and a filter net for filtering the materials are sequentially arranged between the material outlet and the corresponding material collector; a backflow pipe is arranged at the outer part of the shell, and the pipe body of the backflow pipe is provided with a plurality of water leaking openings; liquid in the screw elevator flows back into the washing chamber through the water leaking openingcorrespondingly connected with the screw elevator; the top of the shell is provided with a material inlet and a washing solution inlet; and the top washing chamber is provided with a water level overflow opening. By adopting a wet sieving process, sieving and washing can be simultaneously carried out on soil, and more than three particle size sections of soil can be obtained.

Description

technical field [0001] The invention belongs to the technical field of restoration (or decontamination) of soil and sand. In particular, it relates to an integrated machine for continuous cleaning and screening of soil with multiple particle diameters. Background technique [0002] Soil remediation is a technical measure to restore polluted soil to normal functions. Compared with air and water pollution, soil pollution has the characteristics of long-term and concealment, which endangers human health and the ecological environment. Therefore, repairing polluted soil and restoring soil use functions have always been hot and difficult issues both at home and abroad. In the soil remediation industry, there are more than one hundred existing soil remediation technologies, and there are more than ten commonly used technologies, which can be roughly divided into three methods: physical, chemical and biological. [0003] Before cleaning and repairing the contaminated soil, it is ...

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Problems solved by technology

[0004] The invention discloses an integrated machine for continuous cleaning and screening of soil with multiple particle diameters, which solves the separation of the existing soil screening and rinsing process, and the intermittent feeding and discharging make the soil treatment time too long, while using traditional Dry sieving causes soil dust and soil agglomeration to cause incomplete particle size sieving. Through wet sieving, soil can be screened and cleaned at the same time, and soil with more than three particle sizes can be obtained at the same time.

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