SHAFT SEAL DEVICE USING GLAND PACKING

摘要

A shaft seal device capable of providing a satisfactory and stable shaft sealing function even if a shaft runout or eccentricity occurs on a rotating shaft, wherein gland packings (2) are filled into a seal space (10) formed between the rotating shaft (9) and a stuffing box (1), the gland packings (2) being pressed between a first packing retainer (3) on a sealant area (7) side and a second packing retainer (4) on an atmospheric area (8) side, the first packing retainer (3) being fixed to a rotating equipment main body (6) and the second packing retainer (4) being fixed to the stuffing box (1), the first packing retainer (3) being connected fixedly with a screw shaft (15) extending in the axial direction of the rotating shaft (9), the flanged part (1a) of the stuffing box (1) being provided with an inserting hole (16) larger in diameter a specified amount than the screw shaft (15), a fastening nut (17) being screwed on the screw shaft (15) passed through the inserting hole (16), and a compression spring (18) being fitted onto the screw shaft (15) between the flange part (1a) and the fastening nut (17).