Multi-layer filtering device for soil pollution remediation

The invention discloses a multi-layer type filtering device for soil pollution remediation, which comprises an outer box shell, a support base, an auxiliary grinding assembly, a built-in filtering assembly and a conveying device; the outer box shell is fixedly arranged on the upper end surface of the support base, and a plurality of driving wheels are symmetrically arranged at four corners of thelower end surface of the support base; an auxiliary grinding assembly is vertically arranged on one side of the interior of the outer box shell in a penetrating mode and is used for primarily grindingand refining new soil mud, so that the soil mud enters a built-in filtering assembly in a granular form; a built-in filtering assembly is arranged in the outer box shell and is communicated with theauxiliary grinding assembly, wherein a conveying device is further installed in the outer box shell and conveys filtered soil mud to the outside of the device and evenly disperses the filtered soil mud to cover the ground surfa