Screen roll straightening device for pellet double-layer roller screen and using method of screen roll straightening device

The invention discloses a screen roll straightening device for a pellet double-layer roller screen. The screen roll straightening device comprises a bottom plate, a straightening unit, a screen roll lifting unit and a straightening top pressure unit and is characterized in that the bottom plate (14) is a steel plate and arranged on the flat ground; the straightening unit is composed of a checking platform (5) and a straightening platform (6); the screen roll lifting unit is composed of a screen roll lifting rod (8) in a shape similar to a lever; the straightening top pressure unit is composed of top pressure transverse stop dogs (7) mounted at the tops of corresponding top pressure unit brackets (3); and a plurality of jacks (9) are vertically arranged in the middle of the lower ends of the corresponding pressure transverse stop dogs. The screen roll straightening device for the pellet double-layer roller screen and a using method of the screen roll straightening device have the advantages that as traditional