Automatic replacing, weighing, discharging and recycling system for superfine silicon powder

The utility model discloses an automatic replacement, weighing, blanking and recovery system for superfine silicon powder, which relates to the technical field of silicon powder recovery in polycrystalline silicon production, and comprises a silicon powder filter, a silicon powder collecting tank, a ton bag, an electronic scale and a DCS (distributed control system), the silicon powder filter is communicated with the silicon powder collecting tank through a pipeline I, the silicon powder collecting tank is connected with an N2 replacement pipeline, and the N2 replacement pipeline is communicated with the ton bag through a pipeline II; an exhaust port I in the top of the silicon powder collecting tank is connected with the waste gas treatment system through a pipeline II, a discharging port in the bottom of the silicon powder collecting tank is connected with the ton bag through a pipeline III, the pipeline III is connected with the ton bag through a rapid inserting tool, the rapid inserting tool is connected