The utility model discloses a titanium tetrachloride residue liquid separating centrifugal machine which comprises a titanium tetrachloride storage tank, a machine shell, a machine base, a differential device and a motor. Two sets of axial drive wheels of the motor drive two sets of differential revolving shafts of the differential device respectively. A liquid outlet pipe is arranged at the left end at the bottom of the machine shell, and a residual outlet pipe is arranged at the right end at the bottom of the machine shell. A residue outlet valve is arranged on the residue outlet pipe, the liquid outlet pipe is connected with a feeding pipe of the titanium tetrachloride storage tank through a pipeline, and the top of the titanium tetrachloride storage tank is connected with a negative pressure draught fan through a pipeline. The titanium tetrachloride residue liquid separating centrifugal machine is good in sealing performance, capable of well preventing external air from entering a horizontal separator as a sealing structure formed by combination design of an O-shaped sealing ring, a nitrogen partition chamber, a sealing ring and a ring-shaped oil groove is utilized by the revolving shafts and the machine shell, and capable of reducing bearing abrasion and prolonging the service life of equipment. The titanium tetrachloride residue liquid separating centrifugal machine thoroughly solves the technical problems that in the existing titanium tetrachloride solid-liquid separation process, a sealing effect is poor, abrasion and erosion of the equipment is quick, operation maintenance cost is high and the environment is severely polluted.