Abrasive blast system having a modulation function
Monitor method and apparatus for particle blasting equipment
Abrasive feed system Patent #: 4878320
ApplicationNo. 680337 filed on 04/04/1991
US Classes:451/38, By blasting451/39, With nonsiliceous abradant451/40, With nonatmospheric fluid carrier451/75, Sandblast451/99Abradant supply structure
ExaminersPrimary: Rachuba, M.
Attorney, Agent or Firm
International ClassB24C 001/00
AbstractConventional industrial pressure blasting apparatus is modified to allow a controlled pressure on the blast pot that is greater than the pressure on the line where less aggressive abrasive media and air are mixed for conveying the mixture to the nozzle and then to the workpiece. A media control device, with a fixed but readily variable area, is placed between the blast pot and the media/air mixing line to meter the media flow and maintain a positive pressure differential between the blast pot and the line. Adjusting the pressure differential allows control of the weight ratio of the media-to-air flow to between about 0.05 to 0.25.