Lithology fine identification equipment

The lithology fine identification equipment comprises a screening cylinder and an observation box, and a plurality of filter plates used for screening sedimentary rocks are evenly arranged on the inner side of the screening cylinder; the observation box is connected with the screening cylinder, the observation box is divided into a plurality of layers, each layer of the observation box is transparent, a plurality of filter plates with different mesh numbers are arranged in the screening cylinder, conglomerate, coarse sandstone, medium sandstone, fine sandstone, siltstone and the like in clay rock and clastic rock are screened according to the particle size, collected samples are put into the screening cylinder in the field, and the samples are screened out. By shaking and vibrating the screening cylinder, the sample is screened in multiple layers, and then the filter plate on which the sample is intercepted is observed, so that the particle size of the sample can be judged, and the lithology can be finely ide