System for separating impurities in pasty polyvinyl chloride product

The utility model discloses a system for separating impurities from pasty polyvinyl chloride products. The system comprises a crushing bag filter, the crushing bag filter is communicated with the grinding machine; a discharge port of the grinding machine is communicated with an inlet of the separating device, and an exhaust port of the separating device is communicated with the finished product bin; a bottom discharging port of the separating device is communicated with a feeding port of the swinging screen, an under-screen discharging port of the swinging screen is communicated with the feeding pipe through a pipeline, and a discharging port of the feeding pipe is communicated with the finished product bin. The device has the advantages that 90% of fine materials are separated from materials discharged from the grinding machine through the separating device and are fed into the finished product bag filter through the finished product fan, coarse materials are fed into the swinging screen to be screened, and