Precise desanding device

The invention discloses a precise desanding device, and relates to the technical field of desanding equipment. According to the precise sand removing device, the hydraulic cyclone and shallow layer sedimentation principle is adopted, sewage enters the sand settling tank through the sand settling water inlet pipe, so that the sewage is evenly distributed into the stacked discs, water flow in the system is in a vortex shape due to tangential water inlet, sand moves to the boundary layer of each stacked disc, and the sand removing efficiency is improved. Under the action of gravity, the discs naturally slide to the central opening along the inclined surfaces of the conical funnels and finally settle into the sand collecting tank, the removal rate of the sand with the particle size larger than 75 microns can reach 95% under the designed flow, and the disc type sand separator has the advantages of being small in occupied area, low in energy consumption, good in fine sand removal effect and the like; sewage flows o