Novel sand and water removal centrifugal fan

The utility model discloses a novel sand and water removal centrifugal fan, including spiral case and guide plate, be provided with total air outlet on the spiral case, be provided with the blowdown seam between guide plate and the spiral case, the guide plate includes the main part, the main part corresponds the blowdown seam and locates the articulated fly leaf that has, be provided with the pivot in the main part, the pivot is passed the main part and is rotated with the main part and be connected, the one end that total air outlet was stretched into in the pivot is provided with the power impeller, and the other end stretches into blowdown seam department and is provided with the cam, the cam is contradicted with the fly leaf, compared with the prior art, the utility model, when the centrifugal fan during operation, the wind -force of production drives power rotating impeller, and the power impeller drives the pivot rotation, and the pivot drives the cam and rotates, because the cam is contradicted with t