Centrifugal pump with self-oil-supplementing packing sealing device

The invention discloses a centrifugal pump with a self-oil-supplementing packing sealing device, and belongs to the field of centrifugal pumps. According to the scheme, a crusty pancake is additionally arranged on the basis of an existing packing box to achieve the self-oil-supplementing function of lubricating oil, the lubricating effect is effectively improved, heat absorption balls are stuffed into packing to absorb friction heat, then the heat is transmitted to thermal expansion balls, and therefore the self-oil-supplementing packing sealing device is formed. The thermal expansion ball expands to push the two oil baffles to open the telescopic oil conveying pipe, lubricating oil is squeezed into the filler through the crusty pancake, self-supplementing of the lubricating oil can be achieved, heat dissipation is effectively achieved, the filler is wrapped by the filler shell, the radial pressing effect on the filler is improved, and therefore the filler pressing cover is matched to effectively improve the