Extrusion type screening device

The utility model relates to the technical field of waste slurry treatment, in particular to an extrusion type screening device which comprises a screening conveying belt mechanism and an extrusion roller mechanism, the extrusion roller mechanism is arranged above the screening conveying belt mechanism and extrudes the screening conveying belt mechanism downwards, and the screening conveying belt mechanism comprises a screen type conveying belt. A drainage plate and a plurality of supporting wheels are arranged in the middle space of the screening conveying belt mechanism. A waste rock outlet is formed in the screen type conveying belt, and a waste mud outlet is formed in the drainage plate; the waste soil screening device has the advantages that an existing screening device is improved, the extrusion screen based on the extrusion principle is provided, waste soil is extruded through the extrusion rollers, the waste soil with high fluidity falls down through the screen and is separated from alluvial pebbles i