Anti-corrosion and wear-resisting centrifugal pump

The utility model relates to an anti-corrosion and anti-abrasion centrifugal pump, which is composed of a pump shell, a pump shell lining, an impeller skeleton, an impeller, a pump cover, a pump cover lining, a joint, a movable joint, a reverse guiding vane, a cavity body, an auxiliary impeller, an auxiliary end cover, a support bracket, a main axle, an anti-loosen axle, an anti-loosen nut, etc. The pump shell lining, the pump cover lining and the impeller are anti-corrosion and anti-abrasion material. The movable joint can be extended or contracted. The anti-loosen axle and the anti-loosen nut enable the impeller to be firmly fixed on the main axle. The utility model with the structure has the advantages of anti-corrosion and anti-abrasion performance, adjustable sealing gap, low axle moving seal pressure, reliable seal, convenient installation and maintenance, low cost and reliable operation. The utility model is a centrifugal pump used for conveying the medium with corroding and abrading performance.