Centrifugal pump filler sealing device

The invention discloses a centrifugal pump filler sealing device which comprises a pump shaft. A filler sealing component is arranged outside the pump shaft, is connected with a suction section or a filler box by bolts and comprises a filler gland, a filler sleeve, a filler box sleeve A, a filler box sleeve B and a filler ring, a filler sealing box is formed by the filler box sleeve A and the filler box sleeve B, and the filler ring is arranged between the filler box sleeve A and the filler box sleeve B. The centrifugal pump filler sealing device has the advantages that the filler box is divided into an inner box and an outer box, the filler ring is positioned between the inner box and the outer box of the filler box, accordingly, packing on the inner side of the filler ring can be conveniently replaced, and cleaning and dredging can be facilitated when the filler ring is blocked; centrifugal pumps are easy to maintain when operated in downhole environments with poor water quality andthe like, and the packing