Multistage inclined plate sedimentation tank capable of preventing accumulation on surface

The utility model provides a multistage inclined plate sedimentation tank with an anti-accumulation surface, which relates to the field of multistage inclined plate sedimentation tank equipment and comprises an outer body, a fixed outer frame is clamped outside the outer body, a water inlet is arranged on one side of the outer body, a water outlet is arranged on the other side of the outer body, a sewage receiving hopper is mounted at the bottom of the outer body, and a sewage discharge pipe is arranged at the bottom of the sewage receiving hopper. A water inlet channel is formed in the middle of the outer body, inclined plate layers are installed on the two sides, close to the water inlet channel, in the outer body, sewage can enter the inclined plate layers, a short impact time exists when the sewage flows out of a water outlet, a gear sleeve can be indirectly pushed to rotate, and after the gear sleeve rotates, a fan plate on one side is warped up; after being tilted, the fan plates can be poked into holes