Screening device for petroleum additive production

The utility model belongs to the technical field of screening devices, and particularly relates to a screening device for petroleum additive production, which comprises a screening tank, a cover is arranged at the top end of the screening tank, and a first screening mechanism is mounted on the cover; the first screening mechanism comprises a screening tray, and lifting rods are inserted into the two ends of the screening tray. The vibrating screen has the advantages that the first screening mechanism is arranged, the vibrator is used for driving the first screening tray to vibrate, the screening speed can be increased, the screening efficiency is improved, and the screening period is shortened; by arranging the second screening mechanism, a second screening disc can be driven to twist, so that the screening efficiency is further improved, and screening is more thorough and sufficient; and the second screening mechanism screens the materials screened by the first screening mechanism, small-particle materials d