Abrasive blasting system with waste water recycling
US5545074A · kind A · utility
Inventor
Key dates
| Filing date | Dec 28, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Dec 28, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A closed-environment wet-abrasive blasting system includes a vacuum device for recovering a waste stream of water, abrasive particulate and surface debris. The waste stream is filtered resulting in cleaned water recycling through the system. During operation, water is pumped from a water holding tank to a blast head. Also, abrasive particulate is forced from canister to the blast head. The abrasive material and water form a blast stream which impacts on a surface to treat the surface. The blast head is held to the surface during use by the suction force and defines a work volume over the surface under treatment. In effect, the blast head defines a closed environment in which abrasive particulate water and surface debris do not escape into the surrounding environment, but instead is captured. The vacuum force pulls the surface debris, abrasive particulate and water (i.e., waste stream) from the blast head along a vacuum hose into a recovery tank. There the waste stream accumulates while air passes on to the vacuum. As the waste accumulates, the level rises to a filter. The filter passes air and water, and substantially filters out the abrasive material and surface debris leaving the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.