Vacuum reverse dust removal particle powder feeding machine

The utility model discloses a vacuum reverse dust removal particle powder feeding machine. The vacuum reverse dust removal particle powder feeding machine comprises a feeding barrel, a feeding pipe, a cover plate and a vacuum pump. The powder feeding device has the advantages that air in the feeding barrel is extracted through the air inlet pipe of the vacuum pump, negative pressure is generated in the feeding barrel and the feeding pipe, particle powder materials are extracted into the inner cavity of the feeding barrel through the feeding pipe through the negative pressure, and meanwhile due to continuous flowing of airflow, the particle powder materials can be fed into the feeding barrel through the feeding pipe. Therefore, dust extracted into the cavity in the feeding barrel is discharged through the air outlet pipe at the same time, the vacuum reverse dust removal effect is achieved, then the feeding machine can conduct continuous feeding operation for a long time during feeding, dust in the feeding mach