Straw and pasture screen scarifier

The utility model discloses a straw pasture screen scarifier, and belongs to the technical field of agricultural machinery. The device comprises a bottom frame, a box body is arranged above the bottom frame, a plurality of evenly-spaced screen shafts are arranged in the box body, and a plurality of evenly-spaced grass pulling teeth are arranged on the screen shafts; a lower sieve plate is arranged below the sieve shaft and in the box body; a plurality of negative pressure cavities are formed in the top of the box body, a screen cleaning shaft is arranged in each negative pressure cavity, a plurality of screen cleaning brush plates which are uniformly spaced are arranged on each screen cleaning shaft, and semi-cylindrical screens are arranged on the peripheries of the screen cleaning brush plates and in the negative pressure cavities; an induced draft fan is arranged on the top of the negative pressure cavity on the left side and communicated with the negative pressure cavities through connecting pipes. Straw