The invention discloses visual paper-plastic cleaning, separating and pulp quenching equipment capable of adjusting the height of a screen. The visual paper-plastic cleaning, separating and pulp quenching equipment comprises a machine barrel, wherein the machine barrel consists of a rectangular buffer hood with a water inlet and a water collection hood with a water outlet; a material inlet is formed above the machine barrel, and a material outlet is formed below the other end of the machine barrel; a main shaft with a friction strip is arranged in the machine barrel in a penetrating manner; the screen fixed with vertical steel plates is arranged in the water collection hood; racks are arranged on the steel plates; the racks are meshed with cylindrical gears on a gear shaft; a second bevel gear meshed with a first bevel gear on an output shaft of a lifting motor is arranged at the other end of the gear shaft; a transparent view window and a non-transparent telescopic window curtain are further arranged in the rectangular buffer hood; chutes are symmetrically formed in the transparent view window; the telescopic window curtain consists of a first curtain plate and a second curtain plate; a groove is formed in the right end of the inner side of the first curtain plate; a bulge is formed in the left end of the outer side of the second curtain plate. The equipment can adjust the height of the screen as required during actual work to check the operation condition inside the equipment.