Abrasion-resistant solid-liquid separation cyclone

Disclosed is an abrasion-resistant solid-liquid separation cyclone. The main purpose is to solve the problems that the lower wall face of the outer cone segment of an existing cyclone is abraded severely, and consequently the service life is shortened. The abrasion-resistant solid-liquid separation cyclone is characterized in that the upper closed end of a swirling cavity is provided with an arc-shaped top face; after penetrating through the arc-shaped top face, an overflow opening is fixed to the arc-shaped top face; the abrasion-resistant solid-liquid separation cyclone further comprises an outer cone barrel upper segment, an outer cone barrel lower segment, a bottom flow opening and a small lining cone; the bottom end of the outer cone barrel upper segment is provided with an outer cone barrel upper segment flange; the top end of the outer cone barrel lower segment is provided with an outer cone barrel lower segment flange; the small lining cone is located in the outer cone barrel lower segment and provide