When water is mixed in with the abrasive, the dust in contained in water droplets and does not become airborne but is collected at the base of the surface being blasted. In a broad sense, such systems are basically units that combine water and abrasive and release the combination into a stream of pressurize air through a nozzle, whereby the solution can be blasted at a work surface under high pressure. Wet media blasters have been created to minimize the generation of airborne media particles in blasting operations. This is not an issue in some applications but there are many circumstances where dust containment or suppression is desirable or required. However, such systems do release the blast media or dust into the surrounding area during operation. of Fresno, Tex., which offers the Schmidt brand blasting equipment.ĭry media blasting systems have proven to be very effective in media blast operations and have been in operation for over 100 years. One such source of traditional dry media blasting systems is Axxiom Manufacturing, Inc. Systems of this design are well known and widely available.
The blast media and air stream mix is propelled through a nozzle and directed to a work surface. The metering valve is also connected to a source of pressurized air whereby blast media is mixed into the air stream. Traditional media blasting systems use dry blast media which stored in a bulk tank or pot with an outlet for introducing the media into a media control or metering valve. The invention is related to media blasting systems and is specifically directed to wet media blasters. This also mitigates nozzle clogging by directing most of the abrasive flow away from the water spray nozzle port.īACKGROUND OF THE INVENTION Field of the Invention
This positions the abrasive flow in optimum placement for spray wetting the abrasive as it flows into and through the nozzle. The shaped and tightened abrasive flow is maintained at the lower portion of the blast air stream. The abrasive flow is shaped as it is released from the metering valve in order to tighten the abrasive flow before it enters into the blast air stream. The abrasive feed is placed and shaped to optimize spray coverage and minimize abrasive flow into injection space thus mitigating water nozzle clogs. By more thoroughly mixing the water into the abrasive/water mix, the amount of water required is reduced. A wet media blasting system with a water injection system that provides more uniform distribution of the water, air and media components for achieving better application of the mixture while minimizing the amount of water required to contain and minimize or eliminate airborne particulate matter such as dust produced during the blasting operation.
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