METHOD OF REDUCING POWDER LOAD OF DRY VACUUM PUMP AND POWDER LOAD REDUCER

摘要

The purpose of the present invention is to receive and then temporarily accumulate a powder from an exhaust pipe (7) into a powder load reducer (10) disposed in a stage preceding a dry vacuum pump (3), thereby making it possible to prevent problems due to the entry of a large amount of powder into the dry vacuum pump (3) at once. The powder received into the powder load reducer (10) is temporarily accumulated on a powder receiving surface (18) at the bottom thereof. The powder accumulated on the powder receiving surface (18) is carried by a rotating gas flow (A) generated internally by vacuuming performed by the dry vacuum pump (3), and is discharged via a container exit (16). The powder is not kept accumulating in the powder load reducer (10). The need for a maintenance work and the like to remove the internally accumulated powder periodically is also eliminated.