| 摘要 |
A portable abrasive cleaning machine has a hood covering a surface area to be cleaned, means such as motor driven impeller for discharging an abrasive agent against the surface, the abrasive agent being fed to the impeller from a container on the machine and being returned to the container together with any foreign particles cleaned from the surface through a tube communicating with the hood. Air currents obtained from a pressurized air source to which the machine is connected are employed to power the motor, to feed abrasive agent to the impeller, to convey the abrasive agent and particles back to the container and to separate the abrasive agent from the particles which are discharged into a bag filter. An embodiment of the machine for cleaning an area at the intersection of perpendicular surfaces is provided with wheels engageable with both surfaces and adjustable to obtain proper contact between the surfaces and the hood of the machine. |
