Waste collecting device for polycrystalline abrasive blasting silicon wafer production

The utility model relates to the technical field of waste collecting devices, in particular to a waste collecting device for polycrystalline sand blasting silicon wafer production, which aims at solving the problem that a waste collecting device for polycrystalline sand blasting silicon wafer production in the prior art cannot crush silicon wafers, and adopts the following scheme that the waste collecting device comprises a crushing box, a material receiving trolley, a placing plate and a placing frame, a feeding port is formed in the top of the crushing box, a crushing device is fixed to thetop of the feeding port, a receiving hopper is fixed in the crushing box and located under the feeding port, a discharging pipe is fixed to the bottom of the receiving hopper, a baffle is arranged inthe discharging pipe, one end of the baffle extends to the outside of the discharging pipe, and the other end of the baffle is connected with the crushing device. A connecting rod is fixed to the end,located outside the discha