The utility model discloses a suspension device between grinding roll of flour mill and star rack, organize including the vertical scroll in arranging plum blossom frame shaft hole in and suit bearing frame and the bearing on it, seted up the inlet port on the bearing frame lateral wall, the upper and lower gland cover with vertical scroll clearance fit is withheld at the both ends of bearing group, the vertical scroll shaft shoulder department cover of going up gland cover top is equipped with the seal cover, and the sealed intracavity that forms between step inner wall and the last gland cover outer wall has been placed down, the upper seal floats ring sum swing sealing ring, and the upper seal floats ring and vertical scroll sliding fit, has offered the oil outlet on the seal cover lateral wall, form down two sealed chambeies between inner wall and the vertical scroll of gland cover, the upper seal intracavity is provided with upper and lower swing sealing ring, pushes down the lower oil outlet offered on the axle sleeve lateral wall and rather than linking to each other, has put upper and lower superficial ring at the lower seal intracavity, and the ring of floating downward sets up on gland cover inside wall down, come -up ring and vertical scroll sliding fit. The utility model discloses a sealed effect of vertical scroll strengthens greatly, but increase of service life 2~4 times.